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Questões do ENEM: com imagem

Use os filtros para chegar às questões que interessam. Cada resultado abre em uma página própria com enunciado, alternativas e gabarito.

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23.294 questões encontradas. Mostrando a página 548 de 1165.

  • 3405094B-1B

    Física

    Leis de Newton
    UNESP · 2017FácilEntre para guardar nos favoritos

    Uma minicama elástica é constituída por uma superfície elástica presa a um aro lateral por 32 molas idênticas, como mostra a figura. Quando uma pessoa salta sobre esta minicama, transfere para ela uma quantidade de energia que é absorvida pela superfície elástica e pelas molas.


    Imagem da questão de Física, UNESP 2017, Leis de Newton


    Considere que, ao saltar sobre uma dessas minicamas, uma pessoa transfira para ela uma quantidade de energia igual a 160 J, que 45% dessa energia seja distribuída igualmente entre as 32 molas e que cada uma delas se distenda 3,0 mm. Nessa situação, a constante elástica de cada mola, em N/m, vale

    Escolha uma alternativa para a questão 3405094b-1b
  • 33FED1DC-1B

    Química

    Isomeria: Isomeria Espacial: Isomeria Geométrica (cis-trans) e Isomeria Óptica.
    UNESP · 2017FácilEntre para guardar nos favoritos

    Examine as estruturas do ortocresol e do álcool benzílico.


    Imagem da questão de Química, UNESP 2017, Isomeria: Isomeria Espacial: Isomeria Geométrica (cis-trans) e Isomeria Óptica.


    O ortocresol e o álcool benzílico

    Escolha uma alternativa para a questão 33fed1dc-1b
  • 33FBB3BE-1B

    Química

    Eletroquímica: Oxirredução, Potenciais Padrão de Redução, Pilha, Eletrólise e Leis de Faraday.
    UNESP · 2017MédioEntre para guardar nos favoritos

    O ciclo do enxofre é fundamental para os solos dos manguezais. Na fase anaeróbica, bactérias reduzem o sulfato para produzir o gás sulfeto de hidrogênio. Os processos que ocorrem são os seguintes:


    Imagem da questão de Química, UNESP 2017, Eletroquímica: Oxirredução, Potenciais Padrão de Redução, Pilha, Eletrólise e Leis de Faraday.


    Na produção de sulfeto de hidrogênio por esses processos nos manguezais, o número de oxidação do elemento enxofre

    Escolha uma alternativa para a questão 33fbb3be-1b
  • 33F8BB55-1B

    Química

    Termoquímica: Energia Calorífica, Calor de reação, Entalpia, Equações e Lei de Hess.
    UNESP · 2017FácilEntre para guardar nos favoritos

    Analise os três diagramas de entalpia.


    Imagem da questão de Química, UNESP 2017, Termoquímica: Energia Calorífica, Calor de reação, Entalpia, Equações e Lei de Hess.


    O ∆H da combustão completa de 1 mol de acetileno, C2H2 (g), produzindo CO2 (g) e H2O (ℓ) é

    Escolha uma alternativa para a questão 33f8bb55-1b
  • 33EEF666-1B

    Química

    Cinética Química
    UNESP · 2017FácilEntre para guardar nos favoritos

    Bicarbonato de sódio sólido aquecido se decompõe, produzindo carbonato de sódio sólido, além de água e dióxido de carbono gasosos. O gráfico mostra os resultados de um experimento em que foram determinadas as massas de carbonato de sódio obtidas pela decomposição de diferentes massas de bicarbonato de sódio.


    Figura 1 de 2 da questão de Química, UNESP 2017, Cinética Química


    Os dados do gráfico permitem concluir que as massas de carbonato de sódio e bicarbonato de sódio nessa reação estão relacionadas pela equação Figura 2 de 2 da questão de Química, UNESP 2017, Cinética Química e que o valor aproximado de k é

    Escolha uma alternativa para a questão 33eef666-1b
  • 33E856F3-1B

    Biologia

    Hereditariedade e diversidade da vida
    UNESP · 2017MédioEntre para guardar nos favoritos

    As figuras representam células de duas espécies animais, 1 e 2. Na célula da espécie 1, dois genes, que determinam duas diferentes características, estão presentes no mesmo cromossomo. Na célula da espécie 2, esses dois genes estão presentes em cromossomos diferentes.


    Imagem da questão de Biologia, UNESP 2017, Hereditariedade e diversidade da vida


    Tendo por base a formação de gametas nessas espécies, e sem que se considere a permutação (crossing-over), constata-se a Primeira Lei de Mendel

    Escolha uma alternativa para a questão 33e856f3-1b
  • 33DE6D6E-1B

    Biologia

    Fotossíntese
    UNESP · 2017MédioEntre para guardar nos favoritos

    Os gráficos apresentam as taxas de respiração e de fotossíntese de uma planta em função da intensidade luminosa a que é submetida.


    Imagem da questão de Biologia, UNESP 2017, Fotossíntese


    De acordo com os gráficos e os fenômenos que representam,

    Escolha uma alternativa para a questão 33de6d6e-1b
  • 33DB715B-1B

    Biologia

    Fotossíntese
    UNESP · 2017MédioEntre para guardar nos favoritos

    Analise as imagens de uma mesma planta sob as mesmas condições de luminosidade e sob condições hídricas distintas.


    Imagem da questão de Biologia, UNESP 2017, Fotossíntese


    Os estômatos desta planta estão

    Escolha uma alternativa para a questão 33db715b-1b
  • 33D813AD-1B

    Biologia

    Fungos
    UNESP · 2017MédioEntre para guardar nos favoritos

    Em uma aula de campo, os alunos encontraram, crescendo sobre um tronco caído na mata, organismos conhecidos como orelhas-de-pau. O fato que chamou a atenção dos alunos foi que alguns desses organismos eram de cor verde, como mostra a figura.


    Imagem da questão de Biologia, UNESP 2017, Fungos


    Paula afirmou que o organismo observado era um fungo fotossintetizante e portanto autótrofo.

    Gilberto concordou que seria um fungo fotossintetizante, mas, por estar crescendo em um tronco em decomposição, seria heterótrofo necessariamente.

    Ricardo sugeriu que o organismo observado, na verdade, eram dois organismos, um autótrofo e outro heterótrofo.

    Tiago complementou a ideia de Ricardo, afirmando tratar-se de um musgo, que é uma associação entre um fungo e uma alga.

    Fernanda discordou de Tiago, afirmando tratar-se de um líquen, no qual o fungo fornece os carboidratos necessários para o crescimento da alga.


    A explicação correta para o fato foi dada por

    Escolha uma alternativa para a questão 33d813ad-1b
  • 33D4B710-1B

    Biologia

    Identidade dos seres vivos
    UNESP · 2017MédioEntre para guardar nos favoritos

    Marina não menstruou na data prevista e então comprou um teste para gravidez. A figura ilustra a realização do teste, que indicou que Marina estaria grávida.


    Imagem da questão de Biologia, UNESP 2017, Identidade dos seres vivos


    No mesmo dia, Marina procurou um laboratório especializado para realizar o exame sanguíneo de gravidez, que confirmou o resultado do teste anterior.


    Considere o hormônio que evidenciou a gravidez nos dois testes realizados. O resultado positivo indica que a concentração de

    Escolha uma alternativa para a questão 33d4b710-1b
  • 33D177D0-1B

    Biologia

    Cadeias e teias alimentares
    UNESP · 2017MédioEntre para guardar nos favoritos

    Considere a notícia sobre o controle biológico de pragas adotado pela prefeitura de Paris e as pirâmides ecológicas apresentadas logo a seguir.

    Para combater parasitas que têm consumido a vegetação de Paris, a prefeitura distribuiu aos moradores 40000 larvas de joaninhas, predador natural desses organismos e que pode substituir pesticidas.

    (Veja, 05.04.2017. Adaptado.)


    Imagem da questão de Biologia, UNESP 2017, Cadeias e teias alimentares


    A pirâmide de biomassa, a pirâmide de energia e a barra que representa as joaninhas são:

    Escolha uma alternativa para a questão 33d177d0-1b
  • 3399E861-1B

    Geografia

    Agropecuária
    UNESP · 2017MédioEntre para guardar nos favoritos

    Examine a tira Armandinho, do cartunista Alexandre Beck.



    A situação enfrentada pelo personagem faz alusão

    Escolha uma alternativa para a questão 3399e861-1b
  • 3384DA73-1B

    História

    Brasil Monárquico – Segundo Reinado 1831- 1889
    UNESP · 2017Muito fácilEntre para guardar nos favoritos


    É correto interpretar a charge, que representa D. Pedro II e foi publicada em 1887, como uma

    Escolha uma alternativa para a questão 3384da73-1b
  • 33721DCD-1B

    História

    Antiguidade Ocidental (Gregos, Romanos e Macedônios)
    UNESP · 2017Muito fácilEntre para guardar nos favoritos


    O mapa do Império Romano na época de Augusto (27 a.C.–14 d.C.) demonstra

    Escolha uma alternativa para a questão 33721dcd-1b
  • 336F2932-1B

    Inglês

    Tradução | Translation
    UNESP · 2017MédioEntre para guardar nos favoritos

                            When does the brain work best?

                         The peak times and ages for learning

                          Imagem da questão de Inglês, UNESP 2017, Tradução | Translation

          What’s your ideal time of the day for brain performance? Surprisingly, the answer to this isn’t as simple as being a morning or a night person. New research has shown that certain times of the day are best for completing specific tasks, and listening to your body’s natural clock may help you to accomplish more in 24 hours.

          Science suggests that the best time for our natural peak productivity is late morning. Our body temperatures start to rise just before we wake up in the morning and continue to increase through midday, Steve Kay, a professor of molecular and computational biology at the University of Southern California told The Wall Street Journal. This gradual increase in body temperature means that our working memory, alertness, and concentration also gradually improve, peaking at about mid morning. Our alertness tends to dip after this point, but one study suggested that midday fatigue may actually boost our creative abilities. For a 2011 study, 428 students were asked to solve a series of two types of problems, requiring either analytical or novel thinking. Results showed that their performance on the second type was best at non-peak times of day when they were tired.

          As for the age where our brains are at peak condition, science has long held that fluid intelligence, or the ability to think quickly and recall information, peaks at around age 20. However, a 2015 study revealed that peak brain age is far more complicated than previously believed and concluded that there are about 30 subsets of intelligence, all of which peak at different ages for different people. For example, the study found that raw speed in processing information appears to peak around age 18 or 19, then immediately starts to decline, but short-term memory continues to improve until around age 25, and then begins to drop around age 35, Medical Xpress reported. The ability to evaluate other people’s emotional states peaked much later, in the 40s or 50s. In addition, the study suggested that out our vocabulary may peak as late as our 60s’s or 70’s.

          Still, while working according to your body’s natural clock may sound helpful, it’s important to remember that these times may differ from person to person. On average, people can be divided into two distinct groups: morning people tend to wake up and go to sleep earlier and to be most productive early in the day. Evening people tend to wake up later, start more slowly and peak in the evening. If being a morning or evening person has been working for you the majority of your life, it may be best to not fix what’s not broken.

               (Dana Dovey. www.medicaldaily.com, 08.08.2016. Adaptado.)

    O trecho do quarto parágrafo “it may be best to not fix what’s not broken” equivale, em português, à seguinte ideia:
    Escolha uma alternativa para a questão 336f2932-1b
  • 33690512-1B

    Inglês

    Interpretação de texto | Reading comprehension
    UNESP · 2017MédioEntre para guardar nos favoritos

                            When does the brain work best?

                         The peak times and ages for learning

                          Imagem da questão de Inglês, UNESP 2017, Interpretação de texto | Reading comprehension

          What’s your ideal time of the day for brain performance? Surprisingly, the answer to this isn’t as simple as being a morning or a night person. New research has shown that certain times of the day are best for completing specific tasks, and listening to your body’s natural clock may help you to accomplish more in 24 hours.

          Science suggests that the best time for our natural peak productivity is late morning. Our body temperatures start to rise just before we wake up in the morning and continue to increase through midday, Steve Kay, a professor of molecular and computational biology at the University of Southern California told The Wall Street Journal. This gradual increase in body temperature means that our working memory, alertness, and concentration also gradually improve, peaking at about mid morning. Our alertness tends to dip after this point, but one study suggested that midday fatigue may actually boost our creative abilities. For a 2011 study, 428 students were asked to solve a series of two types of problems, requiring either analytical or novel thinking. Results showed that their performance on the second type was best at non-peak times of day when they were tired.

          As for the age where our brains are at peak condition, science has long held that fluid intelligence, or the ability to think quickly and recall information, peaks at around age 20. However, a 2015 study revealed that peak brain age is far more complicated than previously believed and concluded that there are about 30 subsets of intelligence, all of which peak at different ages for different people. For example, the study found that raw speed in processing information appears to peak around age 18 or 19, then immediately starts to decline, but short-term memory continues to improve until around age 25, and then begins to drop around age 35, Medical Xpress reported. The ability to evaluate other people’s emotional states peaked much later, in the 40s or 50s. In addition, the study suggested that out our vocabulary may peak as late as our 60s’s or 70’s.

          Still, while working according to your body’s natural clock may sound helpful, it’s important to remember that these times may differ from person to person. On average, people can be divided into two distinct groups: morning people tend to wake up and go to sleep earlier and to be most productive early in the day. Evening people tend to wake up later, start more slowly and peak in the evening. If being a morning or evening person has been working for you the majority of your life, it may be best to not fix what’s not broken.

               (Dana Dovey. www.medicaldaily.com, 08.08.2016. Adaptado.)

    As informações apresentadas no quarto parágrafo
    Escolha uma alternativa para a questão 33690512-1b
  • 3365E74E-1B

    Inglês

    Palavras conectivas | Connective words
    UNESP · 2017DifícilEntre para guardar nos favoritos

                            When does the brain work best?

                         The peak times and ages for learning

                          Imagem da questão de Inglês, UNESP 2017, Palavras conectivas | Connective words

          What’s your ideal time of the day for brain performance? Surprisingly, the answer to this isn’t as simple as being a morning or a night person. New research has shown that certain times of the day are best for completing specific tasks, and listening to your body’s natural clock may help you to accomplish more in 24 hours.

          Science suggests that the best time for our natural peak productivity is late morning. Our body temperatures start to rise just before we wake up in the morning and continue to increase through midday, Steve Kay, a professor of molecular and computational biology at the University of Southern California told The Wall Street Journal. This gradual increase in body temperature means that our working memory, alertness, and concentration also gradually improve, peaking at about mid morning. Our alertness tends to dip after this point, but one study suggested that midday fatigue may actually boost our creative abilities. For a 2011 study, 428 students were asked to solve a series of two types of problems, requiring either analytical or novel thinking. Results showed that their performance on the second type was best at non-peak times of day when they were tired.

          As for the age where our brains are at peak condition, science has long held that fluid intelligence, or the ability to think quickly and recall information, peaks at around age 20. However, a 2015 study revealed that peak brain age is far more complicated than previously believed and concluded that there are about 30 subsets of intelligence, all of which peak at different ages for different people. For example, the study found that raw speed in processing information appears to peak around age 18 or 19, then immediately starts to decline, but short-term memory continues to improve until around age 25, and then begins to drop around age 35, Medical Xpress reported. The ability to evaluate other people’s emotional states peaked much later, in the 40s or 50s. In addition, the study suggested that out our vocabulary may peak as late as our 60s’s or 70’s.

          Still, while working according to your body’s natural clock may sound helpful, it’s important to remember that these times may differ from person to person. On average, people can be divided into two distinct groups: morning people tend to wake up and go to sleep earlier and to be most productive early in the day. Evening people tend to wake up later, start more slowly and peak in the evening. If being a morning or evening person has been working for you the majority of your life, it may be best to not fix what’s not broken.

               (Dana Dovey. www.medicaldaily.com, 08.08.2016. Adaptado.)

    No trecho do terceiro parágrafo “However, a 2015 study revealed”, o termo em destaque pode ser substituído, sem alteração de sentido, por
    Escolha uma alternativa para a questão 3365e74e-1b
  • 335FAA1A-1B

    Inglês

    Interpretação de texto | Reading comprehension
    UNESP · 2017MédioEntre para guardar nos favoritos

                            When does the brain work best?

                         The peak times and ages for learning

                          Imagem da questão de Inglês, UNESP 2017, Interpretação de texto | Reading comprehension

          What’s your ideal time of the day for brain performance? Surprisingly, the answer to this isn’t as simple as being a morning or a night person. New research has shown that certain times of the day are best for completing specific tasks, and listening to your body’s natural clock may help you to accomplish more in 24 hours.

          Science suggests that the best time for our natural peak productivity is late morning. Our body temperatures start to rise just before we wake up in the morning and continue to increase through midday, Steve Kay, a professor of molecular and computational biology at the University of Southern California told The Wall Street Journal. This gradual increase in body temperature means that our working memory, alertness, and concentration also gradually improve, peaking at about mid morning. Our alertness tends to dip after this point, but one study suggested that midday fatigue may actually boost our creative abilities. For a 2011 study, 428 students were asked to solve a series of two types of problems, requiring either analytical or novel thinking. Results showed that their performance on the second type was best at non-peak times of day when they were tired.

          As for the age where our brains are at peak condition, science has long held that fluid intelligence, or the ability to think quickly and recall information, peaks at around age 20. However, a 2015 study revealed that peak brain age is far more complicated than previously believed and concluded that there are about 30 subsets of intelligence, all of which peak at different ages for different people. For example, the study found that raw speed in processing information appears to peak around age 18 or 19, then immediately starts to decline, but short-term memory continues to improve until around age 25, and then begins to drop around age 35, Medical Xpress reported. The ability to evaluate other people’s emotional states peaked much later, in the 40s or 50s. In addition, the study suggested that out our vocabulary may peak as late as our 60s’s or 70’s.

          Still, while working according to your body’s natural clock may sound helpful, it’s important to remember that these times may differ from person to person. On average, people can be divided into two distinct groups: morning people tend to wake up and go to sleep earlier and to be most productive early in the day. Evening people tend to wake up later, start more slowly and peak in the evening. If being a morning or evening person has been working for you the majority of your life, it may be best to not fix what’s not broken.

               (Dana Dovey. www.medicaldaily.com, 08.08.2016. Adaptado.)

    According to the second paragraph, the 2011 study showed that
    Escolha uma alternativa para a questão 335faa1a-1b
  • 335C9106-1B

    Inglês

    Interpretação de texto | Reading comprehension
    UNESP · 2017FácilEntre para guardar nos favoritos

                            When does the brain work best?

                         The peak times and ages for learning

                          Imagem da questão de Inglês, UNESP 2017, Interpretação de texto | Reading comprehension

          What’s your ideal time of the day for brain performance? Surprisingly, the answer to this isn’t as simple as being a morning or a night person. New research has shown that certain times of the day are best for completing specific tasks, and listening to your body’s natural clock may help you to accomplish more in 24 hours.

          Science suggests that the best time for our natural peak productivity is late morning. Our body temperatures start to rise just before we wake up in the morning and continue to increase through midday, Steve Kay, a professor of molecular and computational biology at the University of Southern California told The Wall Street Journal. This gradual increase in body temperature means that our working memory, alertness, and concentration also gradually improve, peaking at about mid morning. Our alertness tends to dip after this point, but one study suggested that midday fatigue may actually boost our creative abilities. For a 2011 study, 428 students were asked to solve a series of two types of problems, requiring either analytical or novel thinking. Results showed that their performance on the second type was best at non-peak times of day when they were tired.

          As for the age where our brains are at peak condition, science has long held that fluid intelligence, or the ability to think quickly and recall information, peaks at around age 20. However, a 2015 study revealed that peak brain age is far more complicated than previously believed and concluded that there are about 30 subsets of intelligence, all of which peak at different ages for different people. For example, the study found that raw speed in processing information appears to peak around age 18 or 19, then immediately starts to decline, but short-term memory continues to improve until around age 25, and then begins to drop around age 35, Medical Xpress reported. The ability to evaluate other people’s emotional states peaked much later, in the 40s or 50s. In addition, the study suggested that out our vocabulary may peak as late as our 60s’s or 70’s.

          Still, while working according to your body’s natural clock may sound helpful, it’s important to remember that these times may differ from person to person. On average, people can be divided into two distinct groups: morning people tend to wake up and go to sleep earlier and to be most productive early in the day. Evening people tend to wake up later, start more slowly and peak in the evening. If being a morning or evening person has been working for you the majority of your life, it may be best to not fix what’s not broken.

               (Dana Dovey. www.medicaldaily.com, 08.08.2016. Adaptado.)

    According to the first and second paragraphs, the brain performance peaks in late morning because
    Escolha uma alternativa para a questão 335c9106-1b