Questões: Universidade Estadual do Ceará (UECE) — com gabarito
4.981 questões de Universidade Estadual do Ceará (UECE), todas de 2015. Cada uma tem página própria, com enunciado completo, alternativas e gabarito — e dá para responder na própria página.
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4.981 questões encontradas. Mostrando a página 146 de 250.
792623E0-91 Os impactos ambientais resultantes do rompimento da barragem de uma mineradora em Mariana-MG, no mês de novembro, são os mais diversos, estendendo-se pelos meios bióticos, abióticos e sociais, e ainda estão longe de ser totalmente mitigados.Conceitualmente, impacto ambiental pode ser entendido como79226C5B-91 Geografia
Geografia FísicaUECE · 2015MédioEntre para guardar nos favoritosUm dos principais mecanismos que impulsionam o ciclo da água no planeta é a radiação solar. Sobre este processo, é correto afirmar que791E97C3-91 Geografia
Geografia FísicaUECE · 2015DifícilEntre para guardar nos favoritosO padrão de drenagem fluvial que exibe um arranjo retangular, com os tributários paralelos entre si, e que ocorre em terrenos onde a litologia é constituída por rochas mais ou menos resistentes em faixas paralelas com planos de fraqueza ortogonais é conhecido como7913402A-91 Geografia
ClimaUECE · 2015MédioEntre para guardar nos favoritosSabendo que o clima tem uma inequívoca ação dinâmica, manifesta no sistema oceano-continente-atmosfera, pode-se afirmar corretamente que alguns dos seus principais elementos formadores são:3499BEAF-8A Inglês
Interpretação de texto | Reading comprehensionUECE · 2015DifícilEntre para guardar nos favoritosTEXT
Five years ago, the book world was seized by collective panic over the uncertain future of print.
As readers migrated to new digital devices, ebook sales soared, up 1,260 percent between 2008 and 2010, alarming booksellers that watched consumers use their stores to find titles they would later buy online. Print sales dwindled, bookstores struggled to stay open, and publishers and authors feared that cheaper e-books would cannibalize their business.
Then in 2011, the industry’s fears were realized when Borders declared bankruptcy.
“E-books were this rocket ship going straight up,” said Len Vlahos, a former executive director of the Book Industry Study Group, a nonprofit research group that tracks the publishing industry. “Just about everybody you talked to thought we were going the way of digital music.”
But the digital apocalypse never arrived, or at least not on schedule. While analysts once predicted that e-books would overtake print by 2015, digital sales have instead slowed sharply.
Now, there are signs that some e-book adopters are returning to print, or becoming hybrid readers, who juggle devices and paper. E-book sales fell by 10 percent in the first five months of this year, according to the Association of American Publishers, which collects data from nearly 1,200 publishers. Digital books accounted last year for around 20 percent of the market, roughly the same as they did a few years ago.
E-books’ declining popularity may signal that publishing, while not immune to technological upheaval, will weather the tidal wave of digital technology better than other forms of media, like music and television.
E-book subscription services, modeled on companies like Netflix and Pandora, have struggled to convert book lovers into digital binge readers, and some have shut down. Sales of dedicated e-reading devices have plunged as consumers migrated to tablets and smartphones. And according to some surveys, young readers who are digital natives still prefer reading on paper.
The surprising resilience of print has provided a lift to many booksellers. Independent bookstores, which were battered by the recession and competition from Amazon, are showing strong signs of resurgence. The American Booksellers Association counted 1,712 member stores in 2,227 locations in 2015, up from 1,410 in 1,660 locations five years ago.
Publishers, seeking to capitalize on the shift, are pouring money into their print infrastructures and distribution. Penguin Random House has invested nearly $100 million in expanding and updating its warehouses and speeding up distribution of its books. It added 365,000 square feet last year to its warehouse in Crawfordsville, Ind., more than doubling the size of the warehouse.
“People talked about the demise of physical books as if it was only a matter of time, but even 50 to 100 years from now, print will be a big chunk of our business,” said Markus Dohle, the chief executive of Penguin Random House, which has nearly 250 imprints globally. Print books account for more than 70 percent of the company’s sales in the United States.
Some 12 million e-readers were sold last year, a steep drop from the nearly 20 million sold in 2011, according to Forrester Research. The portion of people who read books primarily on e-readers fell to 32 percent in the first quarter of 2015, from 50 percent in 2012, a Nielsen survey showed.
The tug of war between pixels and print almost certainly isn’t over. Industry analysts and publishing executives say it is too soon to declare the death of the digital publishing revolution. An appealing new device might come along. Already, a growing number of people are reading e-books on their cellphones. Amazon recently unveiled a new tablet for $50, which could draw a new wave of customers to e-books (the first-generation Kindle cost $400)
At Amazon, digital book sales have maintained their upward trajectory, according to Russell Grandinetti, senior vice president of Kindle. Last year, Amazon, which controls some 65 percent of the e-book market, introduced an e-book subscription service that allows readers to pay a flat monthly fee of $10 for unlimited digital reading. It offers more than a million titles, many of them from selfpublished authors.
Some publishing executives say the world is changing too quickly to declare that the digital tide is waning.
“Maybe it’s just a pause here,” said Carolyn Reidy, the president and chief executive of Simon & Schuster. “Will the next generation want to read books on their smartphones, and will we see another burst come?”
www.nytimes.com/2015/09/23
As to the waning of the digital tide, Carolyn Reidy, from Simon & Schuster, thinks that3494BD14-8A Inglês
Interpretação de texto | Reading comprehensionUECE · 2015MédioEntre para guardar nos favoritosTEXT
Five years ago, the book world was seized by collective panic over the uncertain future of print.
As readers migrated to new digital devices, ebook sales soared, up 1,260 percent between 2008 and 2010, alarming booksellers that watched consumers use their stores to find titles they would later buy online. Print sales dwindled, bookstores struggled to stay open, and publishers and authors feared that cheaper e-books would cannibalize their business.
Then in 2011, the industry’s fears were realized when Borders declared bankruptcy.
“E-books were this rocket ship going straight up,” said Len Vlahos, a former executive director of the Book Industry Study Group, a nonprofit research group that tracks the publishing industry. “Just about everybody you talked to thought we were going the way of digital music.”
But the digital apocalypse never arrived, or at least not on schedule. While analysts once predicted that e-books would overtake print by 2015, digital sales have instead slowed sharply.
Now, there are signs that some e-book adopters are returning to print, or becoming hybrid readers, who juggle devices and paper. E-book sales fell by 10 percent in the first five months of this year, according to the Association of American Publishers, which collects data from nearly 1,200 publishers. Digital books accounted last year for around 20 percent of the market, roughly the same as they did a few years ago.
E-books’ declining popularity may signal that publishing, while not immune to technological upheaval, will weather the tidal wave of digital technology better than other forms of media, like music and television.
E-book subscription services, modeled on companies like Netflix and Pandora, have struggled to convert book lovers into digital binge readers, and some have shut down. Sales of dedicated e-reading devices have plunged as consumers migrated to tablets and smartphones. And according to some surveys, young readers who are digital natives still prefer reading on paper.
The surprising resilience of print has provided a lift to many booksellers. Independent bookstores, which were battered by the recession and competition from Amazon, are showing strong signs of resurgence. The American Booksellers Association counted 1,712 member stores in 2,227 locations in 2015, up from 1,410 in 1,660 locations five years ago.
Publishers, seeking to capitalize on the shift, are pouring money into their print infrastructures and distribution. Penguin Random House has invested nearly $100 million in expanding and updating its warehouses and speeding up distribution of its books. It added 365,000 square feet last year to its warehouse in Crawfordsville, Ind., more than doubling the size of the warehouse.
“People talked about the demise of physical books as if it was only a matter of time, but even 50 to 100 years from now, print will be a big chunk of our business,” said Markus Dohle, the chief executive of Penguin Random House, which has nearly 250 imprints globally. Print books account for more than 70 percent of the company’s sales in the United States.
Some 12 million e-readers were sold last year, a steep drop from the nearly 20 million sold in 2011, according to Forrester Research. The portion of people who read books primarily on e-readers fell to 32 percent in the first quarter of 2015, from 50 percent in 2012, a Nielsen survey showed.
The tug of war between pixels and print almost certainly isn’t over. Industry analysts and publishing executives say it is too soon to declare the death of the digital publishing revolution. An appealing new device might come along. Already, a growing number of people are reading e-books on their cellphones. Amazon recently unveiled a new tablet for $50, which could draw a new wave of customers to e-books (the first-generation Kindle cost $400)
At Amazon, digital book sales have maintained their upward trajectory, according to Russell Grandinetti, senior vice president of Kindle. Last year, Amazon, which controls some 65 percent of the e-book market, introduced an e-book subscription service that allows readers to pay a flat monthly fee of $10 for unlimited digital reading. It offers more than a million titles, many of them from selfpublished authors.
Some publishing executives say the world is changing too quickly to declare that the digital tide is waning.
“Maybe it’s just a pause here,” said Carolyn Reidy, the president and chief executive of Simon & Schuster. “Will the next generation want to read books on their smartphones, and will we see another burst come?”
www.nytimes.com/2015/09/23
Despite the huge drop in e-readers sales last year, people in the industry believe348EF0FF-8A Inglês
Interpretação de texto | Reading comprehensionUECE · 2015DifícilEntre para guardar nos favoritosTEXT
Five years ago, the book world was seized by collective panic over the uncertain future of print.
As readers migrated to new digital devices, ebook sales soared, up 1,260 percent between 2008 and 2010, alarming booksellers that watched consumers use their stores to find titles they would later buy online. Print sales dwindled, bookstores struggled to stay open, and publishers and authors feared that cheaper e-books would cannibalize their business.
Then in 2011, the industry’s fears were realized when Borders declared bankruptcy.
“E-books were this rocket ship going straight up,” said Len Vlahos, a former executive director of the Book Industry Study Group, a nonprofit research group that tracks the publishing industry. “Just about everybody you talked to thought we were going the way of digital music.”
But the digital apocalypse never arrived, or at least not on schedule. While analysts once predicted that e-books would overtake print by 2015, digital sales have instead slowed sharply.
Now, there are signs that some e-book adopters are returning to print, or becoming hybrid readers, who juggle devices and paper. E-book sales fell by 10 percent in the first five months of this year, according to the Association of American Publishers, which collects data from nearly 1,200 publishers. Digital books accounted last year for around 20 percent of the market, roughly the same as they did a few years ago.
E-books’ declining popularity may signal that publishing, while not immune to technological upheaval, will weather the tidal wave of digital technology better than other forms of media, like music and television.
E-book subscription services, modeled on companies like Netflix and Pandora, have struggled to convert book lovers into digital binge readers, and some have shut down. Sales of dedicated e-reading devices have plunged as consumers migrated to tablets and smartphones. And according to some surveys, young readers who are digital natives still prefer reading on paper.
The surprising resilience of print has provided a lift to many booksellers. Independent bookstores, which were battered by the recession and competition from Amazon, are showing strong signs of resurgence. The American Booksellers Association counted 1,712 member stores in 2,227 locations in 2015, up from 1,410 in 1,660 locations five years ago.
Publishers, seeking to capitalize on the shift, are pouring money into their print infrastructures and distribution. Penguin Random House has invested nearly $100 million in expanding and updating its warehouses and speeding up distribution of its books. It added 365,000 square feet last year to its warehouse in Crawfordsville, Ind., more than doubling the size of the warehouse.
“People talked about the demise of physical books as if it was only a matter of time, but even 50 to 100 years from now, print will be a big chunk of our business,” said Markus Dohle, the chief executive of Penguin Random House, which has nearly 250 imprints globally. Print books account for more than 70 percent of the company’s sales in the United States.
Some 12 million e-readers were sold last year, a steep drop from the nearly 20 million sold in 2011, according to Forrester Research. The portion of people who read books primarily on e-readers fell to 32 percent in the first quarter of 2015, from 50 percent in 2012, a Nielsen survey showed.
The tug of war between pixels and print almost certainly isn’t over. Industry analysts and publishing executives say it is too soon to declare the death of the digital publishing revolution. An appealing new device might come along. Already, a growing number of people are reading e-books on their cellphones. Amazon recently unveiled a new tablet for $50, which could draw a new wave of customers to e-books (the first-generation Kindle cost $400)
At Amazon, digital book sales have maintained their upward trajectory, according to Russell Grandinetti, senior vice president of Kindle. Last year, Amazon, which controls some 65 percent of the e-book market, introduced an e-book subscription service that allows readers to pay a flat monthly fee of $10 for unlimited digital reading. It offers more than a million titles, many of them from selfpublished authors.
Some publishing executives say the world is changing too quickly to declare that the digital tide is waning.
“Maybe it’s just a pause here,” said Carolyn Reidy, the president and chief executive of Simon & Schuster. “Will the next generation want to read books on their smartphones, and will we see another burst come?”
www.nytimes.com/2015/09/23
According to the chief executive of Penguin Random House,3486B266-8A Inglês
Interpretação de texto | Reading comprehensionUECE · 2015MédioEntre para guardar nos favoritosTEXT
Five years ago, the book world was seized by collective panic over the uncertain future of print.
As readers migrated to new digital devices, ebook sales soared, up 1,260 percent between 2008 and 2010, alarming booksellers that watched consumers use their stores to find titles they would later buy online. Print sales dwindled, bookstores struggled to stay open, and publishers and authors feared that cheaper e-books would cannibalize their business.
Then in 2011, the industry’s fears were realized when Borders declared bankruptcy.
“E-books were this rocket ship going straight up,” said Len Vlahos, a former executive director of the Book Industry Study Group, a nonprofit research group that tracks the publishing industry. “Just about everybody you talked to thought we were going the way of digital music.”
But the digital apocalypse never arrived, or at least not on schedule. While analysts once predicted that e-books would overtake print by 2015, digital sales have instead slowed sharply.
Now, there are signs that some e-book adopters are returning to print, or becoming hybrid readers, who juggle devices and paper. E-book sales fell by 10 percent in the first five months of this year, according to the Association of American Publishers, which collects data from nearly 1,200 publishers. Digital books accounted last year for around 20 percent of the market, roughly the same as they did a few years ago.
E-books’ declining popularity may signal that publishing, while not immune to technological upheaval, will weather the tidal wave of digital technology better than other forms of media, like music and television.
E-book subscription services, modeled on companies like Netflix and Pandora, have struggled to convert book lovers into digital binge readers, and some have shut down. Sales of dedicated e-reading devices have plunged as consumers migrated to tablets and smartphones. And according to some surveys, young readers who are digital natives still prefer reading on paper.
The surprising resilience of print has provided a lift to many booksellers. Independent bookstores, which were battered by the recession and competition from Amazon, are showing strong signs of resurgence. The American Booksellers Association counted 1,712 member stores in 2,227 locations in 2015, up from 1,410 in 1,660 locations five years ago.
Publishers, seeking to capitalize on the shift, are pouring money into their print infrastructures and distribution. Penguin Random House has invested nearly $100 million in expanding and updating its warehouses and speeding up distribution of its books. It added 365,000 square feet last year to its warehouse in Crawfordsville, Ind., more than doubling the size of the warehouse.
“People talked about the demise of physical books as if it was only a matter of time, but even 50 to 100 years from now, print will be a big chunk of our business,” said Markus Dohle, the chief executive of Penguin Random House, which has nearly 250 imprints globally. Print books account for more than 70 percent of the company’s sales in the United States.
Some 12 million e-readers were sold last year, a steep drop from the nearly 20 million sold in 2011, according to Forrester Research. The portion of people who read books primarily on e-readers fell to 32 percent in the first quarter of 2015, from 50 percent in 2012, a Nielsen survey showed.
The tug of war between pixels and print almost certainly isn’t over. Industry analysts and publishing executives say it is too soon to declare the death of the digital publishing revolution. An appealing new device might come along. Already, a growing number of people are reading e-books on their cellphones. Amazon recently unveiled a new tablet for $50, which could draw a new wave of customers to e-books (the first-generation Kindle cost $400)
At Amazon, digital book sales have maintained their upward trajectory, according to Russell Grandinetti, senior vice president of Kindle. Last year, Amazon, which controls some 65 percent of the e-book market, introduced an e-book subscription service that allows readers to pay a flat monthly fee of $10 for unlimited digital reading. It offers more than a million titles, many of them from selfpublished authors.
Some publishing executives say the world is changing too quickly to declare that the digital tide is waning.
“Maybe it’s just a pause here,” said Carolyn Reidy, the president and chief executive of Simon & Schuster. “Will the next generation want to read books on their smartphones, and will we see another burst come?”
www.nytimes.com/2015/09/23
As to young readers, who are the digital natives, it is stated that they348130B9-8A Inglês
Interpretação de texto | Reading comprehensionUECE · 2015MédioEntre para guardar nos favoritosTEXT
Five years ago, the book world was seized by collective panic over the uncertain future of print.
As readers migrated to new digital devices, ebook sales soared, up 1,260 percent between 2008 and 2010, alarming booksellers that watched consumers use their stores to find titles they would later buy online. Print sales dwindled, bookstores struggled to stay open, and publishers and authors feared that cheaper e-books would cannibalize their business.
Then in 2011, the industry’s fears were realized when Borders declared bankruptcy.
“E-books were this rocket ship going straight up,” said Len Vlahos, a former executive director of the Book Industry Study Group, a nonprofit research group that tracks the publishing industry. “Just about everybody you talked to thought we were going the way of digital music.”
But the digital apocalypse never arrived, or at least not on schedule. While analysts once predicted that e-books would overtake print by 2015, digital sales have instead slowed sharply.
Now, there are signs that some e-book adopters are returning to print, or becoming hybrid readers, who juggle devices and paper. E-book sales fell by 10 percent in the first five months of this year, according to the Association of American Publishers, which collects data from nearly 1,200 publishers. Digital books accounted last year for around 20 percent of the market, roughly the same as they did a few years ago.
E-books’ declining popularity may signal that publishing, while not immune to technological upheaval, will weather the tidal wave of digital technology better than other forms of media, like music and television.
E-book subscription services, modeled on companies like Netflix and Pandora, have struggled to convert book lovers into digital binge readers, and some have shut down. Sales of dedicated e-reading devices have plunged as consumers migrated to tablets and smartphones. And according to some surveys, young readers who are digital natives still prefer reading on paper.
The surprising resilience of print has provided a lift to many booksellers. Independent bookstores, which were battered by the recession and competition from Amazon, are showing strong signs of resurgence. The American Booksellers Association counted 1,712 member stores in 2,227 locations in 2015, up from 1,410 in 1,660 locations five years ago.
Publishers, seeking to capitalize on the shift, are pouring money into their print infrastructures and distribution. Penguin Random House has invested nearly $100 million in expanding and updating its warehouses and speeding up distribution of its books. It added 365,000 square feet last year to its warehouse in Crawfordsville, Ind., more than doubling the size of the warehouse.
“People talked about the demise of physical books as if it was only a matter of time, but even 50 to 100 years from now, print will be a big chunk of our business,” said Markus Dohle, the chief executive of Penguin Random House, which has nearly 250 imprints globally. Print books account for more than 70 percent of the company’s sales in the United States.
Some 12 million e-readers were sold last year, a steep drop from the nearly 20 million sold in 2011, according to Forrester Research. The portion of people who read books primarily on e-readers fell to 32 percent in the first quarter of 2015, from 50 percent in 2012, a Nielsen survey showed.
The tug of war between pixels and print almost certainly isn’t over. Industry analysts and publishing executives say it is too soon to declare the death of the digital publishing revolution. An appealing new device might come along. Already, a growing number of people are reading e-books on their cellphones. Amazon recently unveiled a new tablet for $50, which could draw a new wave of customers to e-books (the first-generation Kindle cost $400)
At Amazon, digital book sales have maintained their upward trajectory, according to Russell Grandinetti, senior vice president of Kindle. Last year, Amazon, which controls some 65 percent of the e-book market, introduced an e-book subscription service that allows readers to pay a flat monthly fee of $10 for unlimited digital reading. It offers more than a million titles, many of them from selfpublished authors.
Some publishing executives say the world is changing too quickly to declare that the digital tide is waning.
“Maybe it’s just a pause here,” said Carolyn Reidy, the president and chief executive of Simon & Schuster. “Will the next generation want to read books on their smartphones, and will we see another burst come?”
www.nytimes.com/2015/09/23
As compared to music and television in relation to digital technology, publishing seems to3479DE1E-8A Inglês
Interpretação de texto | Reading comprehensionUECE · 2015MédioEntre para guardar nos favoritosTEXT
Five years ago, the book world was seized by collective panic over the uncertain future of print.
As readers migrated to new digital devices, ebook sales soared, up 1,260 percent between 2008 and 2010, alarming booksellers that watched consumers use their stores to find titles they would later buy online. Print sales dwindled, bookstores struggled to stay open, and publishers and authors feared that cheaper e-books would cannibalize their business.
Then in 2011, the industry’s fears were realized when Borders declared bankruptcy.
“E-books were this rocket ship going straight up,” said Len Vlahos, a former executive director of the Book Industry Study Group, a nonprofit research group that tracks the publishing industry. “Just about everybody you talked to thought we were going the way of digital music.”
But the digital apocalypse never arrived, or at least not on schedule. While analysts once predicted that e-books would overtake print by 2015, digital sales have instead slowed sharply.
Now, there are signs that some e-book adopters are returning to print, or becoming hybrid readers, who juggle devices and paper. E-book sales fell by 10 percent in the first five months of this year, according to the Association of American Publishers, which collects data from nearly 1,200 publishers. Digital books accounted last year for around 20 percent of the market, roughly the same as they did a few years ago.
E-books’ declining popularity may signal that publishing, while not immune to technological upheaval, will weather the tidal wave of digital technology better than other forms of media, like music and television.
E-book subscription services, modeled on companies like Netflix and Pandora, have struggled to convert book lovers into digital binge readers, and some have shut down. Sales of dedicated e-reading devices have plunged as consumers migrated to tablets and smartphones. And according to some surveys, young readers who are digital natives still prefer reading on paper.
The surprising resilience of print has provided a lift to many booksellers. Independent bookstores, which were battered by the recession and competition from Amazon, are showing strong signs of resurgence. The American Booksellers Association counted 1,712 member stores in 2,227 locations in 2015, up from 1,410 in 1,660 locations five years ago.
Publishers, seeking to capitalize on the shift, are pouring money into their print infrastructures and distribution. Penguin Random House has invested nearly $100 million in expanding and updating its warehouses and speeding up distribution of its books. It added 365,000 square feet last year to its warehouse in Crawfordsville, Ind., more than doubling the size of the warehouse.
“People talked about the demise of physical books as if it was only a matter of time, but even 50 to 100 years from now, print will be a big chunk of our business,” said Markus Dohle, the chief executive of Penguin Random House, which has nearly 250 imprints globally. Print books account for more than 70 percent of the company’s sales in the United States.
Some 12 million e-readers were sold last year, a steep drop from the nearly 20 million sold in 2011, according to Forrester Research. The portion of people who read books primarily on e-readers fell to 32 percent in the first quarter of 2015, from 50 percent in 2012, a Nielsen survey showed.
The tug of war between pixels and print almost certainly isn’t over. Industry analysts and publishing executives say it is too soon to declare the death of the digital publishing revolution. An appealing new device might come along. Already, a growing number of people are reading e-books on their cellphones. Amazon recently unveiled a new tablet for $50, which could draw a new wave of customers to e-books (the first-generation Kindle cost $400)
At Amazon, digital book sales have maintained their upward trajectory, according to Russell Grandinetti, senior vice president of Kindle. Last year, Amazon, which controls some 65 percent of the e-book market, introduced an e-book subscription service that allows readers to pay a flat monthly fee of $10 for unlimited digital reading. It offers more than a million titles, many of them from selfpublished authors.
Some publishing executives say the world is changing too quickly to declare that the digital tide is waning.
“Maybe it’s just a pause here,” said Carolyn Reidy, the president and chief executive of Simon & Schuster. “Will the next generation want to read books on their smartphones, and will we see another burst come?”
www.nytimes.com/2015/09/23
While it was thought that by 2015 e-books would have totally surpassed print, what is really happening is that3462BDD8-8A Biologia
Identidade dos seres vivosUECE · 2015MédioEntre para guardar nos favoritosAtente ao que se diz sobre o HPV, e assinale com V o que for verdadeiro e com F o que for falso.( ) O HPV somente afeta mulheres; por isso, a vacinação é exclusiva para meninas de 9 a 11 anos de idade.( ) O HPV pode ser eliminado espontaneamente pelo sistema imunológico de pessoas infectadas.( ) Homens são apenas transmissores do vírus e não desenvolvem nenhum tipo de câncer quando infectados com o HPV.( ) A principal forma de transmissão do HPV é pela via sexual, incluindo o contato oral-genital, genital-genital ou mesmo manual-genital.A sequência correta, de cima para baixo, é:34586F20-8A Química
Fórmulas, Balanceamento e Leis ponderais das reações químicasUECE · 2015MédioEntre para guardar nos favoritosDADOS QUE PODEM SER USADOS NESTA PROVA

O fermento é responsável pelo aumento do volume de um bolo, que acontece assim: a temperatura alta faz com que o fermento libere gás carbônico; esse gás se expande e faz o bolo crescer. Quando adicionado na massa, o fermento sofre uma transformação química a partir da reação entre bicarbonato de sódio e fosfato dihidrogenado de cálcio:
NaHCO3 + Ca(H2 PO4)2 —–>
Assinale a opção que apresenta corretamente os produtos ajustados dessa reação química.
3452FE2A-8A Química
Cadeias Carbônicas: Características e Classificações do Átomo do Carbono, Tipos de Ligação e Hibridação. Tipos de Cadeias Carbônicas e Fórmulas. Séries: Homóloga, Isóloga e Heteróloga.UECE · 2015MédioEntre para guardar nos favoritosDADOS QUE PODEM SER USADOS NESTA PROVA

Um carro estacionado na sombra durante um dia, com as janelas fechadas, pode conter de 400 a 800 mg de benzeno. Se está ao sol, o nível de benzeno subirá de 2000 a 4000 mg. A pessoa que entra no carro e mantém as janelas fechadas, inevitavelmente aspirará, em rápida sucessão, excessivas quantidades dessa toxina. O benzeno é uma toxina que afeta os rins e o fígado, e o que é pior, é extremamente difícil para o organismo expulsar esta substância tóxica. Por essa razão, os manuais de instruções de uso dos carros indicam que antes de ligar o ar condicionado, deve-se primeiramente abrir as janelas e deixá-las abertas por um tempo de dois minutos.
Com relação ao benzeno, assinale a afirmação correta.
344EE250-8A Biologia
Moléculas, células e tecidosUECE · 2015MédioEntre para guardar nos favoritosDADOS QUE PODEM SER USADOS NESTA PROVA
O Prêmio Nobel de Química de 2015 foi para três pesquisadores que descobriram mecanismos biomoleculares naturais que reparam erros no DNA (ácido desoxirribonucleico), que contém as informações para o desenvolvimento e o funcionamento dos seres vivos. O DNA é relativamente instável e sua composição pode ser danificada por diversos fatores. Os pesquisadores Lindahl, Sancar e Modrich descobriram mecanismos que existem em praticamente todos os seres vivos e servem como "caixas de ferramentas" naturais para corrigir esses defeitos que surgem espontaneamente. Com relação ao DNA, assinale a afirmação correta.344A1616-8A Química
Sistemas Gasosos - Lei, Teoria Cinética, Equação e Mistura dos Gases. Princípio de Avogadro.UECE · 2015MédioEntre para guardar nos favoritosDADOS QUE PODEM SER USADOS NESTA PROVA
Em alguns casos, há necessidade de coletar-se o produto de uma reação sob a água para evitar que ele escape e misture-se com o ar atmosférico. Uma amostra de 500 mL de oxigênio foi coletada sob a água a 23 ºC e pressão de 1 atm. Sabendo-se que a pressão de vapor da água a 23 ºC é 0,028 atm, o volume que o O2 seco ocupará naquelas condições de temperatura e pressão será34461DC2-8A Física
Física Atômica e NuclearUECE · 2015DifícilEntre para guardar nos favoritosDADOS QUE PODEM SER USADOS NESTA PROVA
Em 1839, o físico Alexandre Edmond Becquerel (1820–1891) ao descobrir, experimentalmente, o efeito fotoelétrico, aos 19 anos de idade, jamais imaginou que estivesse criando um novo meio de captação de energia limpa. A energia solar incide sobre uma célula fotoelétrica atingindo elétrons e produzindo eletricidade que pode ser convertida em energia luminosa ou mecânica, por exemplo. Para garantir maior eficiência, o material usado na fabricação de uma célula fotoelétrica deve ter342475BD-8A Física
Cargas Elétricas e EletrizaçãoUECE · 2015FácilEntre para guardar nos favoritosUm painel solar fotovoltaico, equipamento de uso bastante difundido nos últimos anos de crise energética no Brasil, é utilizado para341D7703-8A Física
RefraçãoUECE · 2015FácilEntre para guardar nos favoritosUma escova de dentes tem seu cabo feito de plástico azul, no qual estão presas cerdas de nylon incolor. As pontas das cerdas parecem azuis quando a escova é iluminada com a luz do dia. O fenômeno ótico responsável principal por essa coloração azul nas pontas das cerdas é denominado3418D382-8A Física
Ondas e Propriedades OndulatóriasUECE · 2015MédioEntre para guardar nos favoritosUm apontador laser, também conhecido como “laser pointer”, é direcionado não perpendicularmente para a superfície da água de um tanque, com o líquido em repouso. O raio de luz monocromático incide sobre a superfície, sendo parcialmente refletido e parcialmente refratado. Em relação ao raio incidente, o refratado muda34126843-8A Geografia
ClimaUECE · 2015MédioEntre para guardar nos favoritosConsiderando as tipologias macroclimáticas do Brasil, é correto afirmar que o clima que predomina na porção norte do Brasil, compreendendo os estados do Amazonas, Pará, Acre, Rondônia, Amapá, e parte do Mato Grosso e Tocantins, e que é controlado pelos sistemas atmosféricos massa equatorial continental e atlântica, e pela zona de convergência intertropical é o clima