Questões de Vestibular IF Sudeste - MG 2017 para Vestibular - Primeiro Semestre
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Your gut, your emotions
What controls our emotions? The same two people might see the same tragic newspaper headline, (1) __________ one is much more emotionally affected than the other. Why is that? According to an international team led by UCLA researchers, these emotions may be partially driven by an unlikely source: our gut bacteria. In fact, the bacteria that colonize our intestines may influence the architecture of the brain itself.
The experiment examining the relationship between brain development and the gut microbiome was conducted with mice. Specific strains of mice, one that lacked a complete gut microbiome and one that had a normal microbiome, were compared in terms of their brain development and behavior. The influence of microorganisms is not limited to brain development.
Interestingly, the mice with the ―normal‖ microbiome had more anxiety and moved less than the mice without the microbiome. (2) __________ exposed to a microbiome early in life, the active, calm mice began to act more anxious and reduced their movements. Microbiota evidently had this influence by affecting hormonal expression and building particular pathways in the brain associated with anxiety. The influence on brain development apparently occurred at a particular point early in the mouse‘s life, so it‘s possible early exposure to a proper microbiome is important for normal development. The researchers speculate that the microbiome helps the mice develop an appropriate sense of caution.
The influence of microorganisms is not limited to brain development. (3) __________ no conclusive link has been established, a few studies have detected abnormalities in the gut microbiomes of children with Autism Spectrum Disorders compared to non-affected children. Nor is microorganism influence limited to gut bacteria. A separate study in hyenas (also awaiting conclusive proof) suggests that individual hyenas use a specific cocktail of stinky bacteria in their scent markers left as a message to other hyenas.
(4) __________ some fungus can get in on the act, hijacking ants and forcing the unfortunate insects to relocate to a place favorable for a fungus to grow. The ant does not survive, but it makes great fungus food. (5) __________ a growing body of evidence from other animals, until the UCLA study there was not much direct research on how the microbiome affects humans. But given its potential importance, hopefully there will soon be more research along these lines. Going with your gut, indeed!
Disponível em:< https://daily.jstor.org/your-gut-youremotions/?utm_term=YOUR%20GUT%2C%20YOUR%20EMOTIONS&utm_campaign=jstordaily_08032017&utm_content=e mail&utm_source=Act-On+Software&utm_medium=email>. Acesso em: 15 Set. 2017.
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Will human beings ever live on other planets?
(1) __________ we have become accustomed to the idea of space travel, and in films and fiction it seems as tough space travel is inevitable, it appears unlikely that human beings will ever get any further than Mars, our nearest neighbor. No matter how many films we make about space travel, the fact is that it remains technologically challenging, and extremely expensive. (2) __________ the distances involved are immense, any voyage outside the solar system would take hundreds of years using current technology. Wherever human beings went into space, they would have problems of how to eat and breathe, and their spaceship would have to carry vast amounts of fuel (3) __________ cover the distance. Even Mars is so far away that it would take about six months to get there. (4) __________ the distance between Earth and Mars varies, astronauts would have to wait for nearly two years before they could return using the shortest journey time. (5) __________ it could cost as much as $ 100 billion, a manned mission to Mars is planned for sometime between 2010 and 2020.
VINCE, M. Macmillan English grammar in context. Macmillan, London. 2008. p. 165.
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