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Texto 3
COULD THIS CATERPILLAR HELP SOLVE THE WORLD’S PLASTIC BAG PROBLEM?
1 A developmental biologist and amateur beekeeper has come up with a new way to get rid
of used plastic bags: Make waxworms eat them. The larvae of the greater wax moth (Galleria
mellonella), these caterpillars thrive on beeswax. While cleaning out empty hive boxes that
were infested with these caterpillars, Federica Bertocchini of the Institute of Biomedicine and
5 Biotechnology of Cantabria in Spain put them in a plastic grocery bag. To her surprise the
waxworms quickly ate their way out, leaving the bag riddled with holes. It turns out the
caterpillars can break down the bag's polyethylene into ethylene glycol, which can be readily
converted into useful substances such as antifreeze, the team reports today in Current
Biology. Polyethylene is very hard to break down making the 80 million tons produced a year a
10 big recycling challenge. Only recently have researchers begun to make progress doing so,
and this caterpillar may be another solution.
PENNISI, Elizabeth. Adapted from: Science. Could this caterpillar help solve the world’s plastic bag problem? In: Science, 2017. Disponível em: <http://www.sciencemag.org/news/2017/04/could-caterpillar-help-solve-world-s-plastic-bag-problem.>. Acesso em: 26/06/2017.
Choose the correct option.
Texto 3
COULD THIS CATERPILLAR HELP SOLVE THE WORLD’S PLASTIC BAG PROBLEM?
1 A developmental biologist and amateur beekeeper has come up with a new way to get rid
of used plastic bags: Make waxworms eat them. The larvae of the greater wax moth (Galleria
mellonella), these caterpillars thrive on beeswax. While cleaning out empty hive boxes that
were infested with these caterpillars, Federica Bertocchini of the Institute of Biomedicine and
5 Biotechnology of Cantabria in Spain put them in a plastic grocery bag. To her surprise the
waxworms quickly ate their way out, leaving the bag riddled with holes. It turns out the
caterpillars can break down the bag's polyethylene into ethylene glycol, which can be readily
converted into useful substances such as antifreeze, the team reports today in Current
Biology. Polyethylene is very hard to break down making the 80 million tons produced a year a
10 big recycling challenge. Only recently have researchers begun to make progress doing so,
and this caterpillar may be another solution.
PENNISI, Elizabeth. Adapted from: Science. Could this caterpillar help solve the world’s plastic bag problem? In: Science, 2017. Disponível em: <http://www.sciencemag.org/news/2017/04/could-caterpillar-help-solve-world-s-plastic-bag-problem.>. Acesso em: 26/06/2017.
Choose the correct option.
Resolução comentada
As lagartas comeram o plástico e fizeram buracos na sacola.
O texto diz que as lagartas 'quickly ate their way out, leaving the bag riddled with holes'. Elas comeram o plástico, e os buracos resultaram disso. A alternativa D descreve exatamente esse fato.
Análise das alternativas
A: ninguém ajudou as lagartas, elas saíram sozinhas. B: elas não usaram cera para sair, comeram o plástico. C: os buracos vieram do consumo do plástico, não da cera. E: o texto não diz que as larvas ajudam a desenvolver cera de abelha nem que isso leva à decomposição do plástico.
Referência: Texto 3, linhas 5-6.
Resolução comentada do VaiConcursos.