# Questão c5efa6c9-cc — Inglês

> Questão de múltipla escolha com gabarito, do acervo do Dicas do ENEM.
> Página com a questão respondível: https://dicasdoenem.com.br/questao/c5efa6c9-cc

- **Código:** c5efa6c9-cc
- **Disciplina:** [Inglês](https://dicasdoenem.com.br/disciplina/16-ingles)
- **Área:** [Linguagens](https://dicasdoenem.com.br/area/linguagens)
- **Ano:** [2025](https://dicasdoenem.com.br/ano/2025)
- **Instituição:** Escola Superior de ciências da Santa Casa de Misericórdia de Vitória
- **Assuntos:** Interpretação de texto | Reading comprehension
- **Nível:** Médio
- **Gabarito:** alternativa B

## Enunciado

Read the following text.

Henry Lester, professor of biology at Caltech, discusses the effects of nicotine addiction on the brain.

Tobacco originated in the Americas, where humans have known some of its effects for at least 10,000 years. Beginning some
500 years ago, ocean crossings spread tobacco use to all other continents. We are essentially the only species that has
learned how to use small amounts of plant toxins — which provide the selective advantage of sickening or poisoning animals
who might eat them — for our own purposes. For tobacco, that toxin is nicotine. In addition to their historical medicinal and
ritual uses, these substances, over time, have come to serve as guides, models, and touchstones for learning about the brain
and opening many fields of neuroscience.

We have learned from tobacco and nicotine that it is possible to isolate single chemicals from plants that cause toxic effects
on herbivores and valued effects on people. We’ve learned that it’s possible to define chemical processes in the human brain
that are activated, inhibited, or otherwise manipulated by those substances.

Available at: https://scienceexchange.caltech.edu/topics/neuroscience/neuroscience-experts/nicotine-addictionneuroscience-henry-lester#what-happens-in-the-brain-when-people-smoke. Accessed on: Aug 1st, 2025.

According to the text, what is one of the main discoveries made from the study of tobacco and nicotine?

## Alternativas

- **A)** That tobacco was first documented in Europe and was later introduced to the Americas and other continents by ocean
 crossings, leading to its eventual global spread.
- **B)** The capacity to extract specific plant compounds that are harmful to plant‑eating animals, yet produce beneficial results
 for humans ✔ **correta**
- **C)** The use of tobacco as a purely recreational substance throughout history.
- **D)** The absence of a significant effect of tobacco on the human brain.

## Resposta correta

Alternativa **B**.

## Como citar

Dicas do ENEM. Questão c5efa6c9-cc. Disponível em: https://dicasdoenem.com.br/questao/c5efa6c9-cc