Biology, 10.06.2021 22:30 warnene17

Cientistas encontraram compostos de ferro, cianeto e monóxido de carbono em meteoritos que bombardearam a Terra durante sua formação, o que pode fornecer pistas sobre a origem da vida no planeta. Essa composição assemelha-se à hidrogenase, enzima que quebra o hidrogênio: “É possível que esses complexos de cianeto, ferro e monóxido de carbono tenham sido precursores para as ações das enzimas e depois incorporados a proteínas”, acredita Karen Smith, pesquisadora sênior de Boise. Adaptado de: Redação Galileu, 27/06/2019. Disponível em: <https://revistagalileu. globo. com/Ciencia/Espaco/noticia/2019/06/ venenoem-meteoritos-fornece-pistas- sobre-origem-da-vida-na-terra. html>. Acesso em: 12 jun. 2019. Em relação às teorias de origem da vida no planeta Terra, é correto afirmar que: * (a) a notícia reforça a possibilidade da vinda de seres vivos de outros planetas, tal como postulado por Pasteur em 1860.

(b) a teoria da biogênese argumenta que os primeiros seres vivos surgiram a partir da matéria inanimada.

(c) os primeiros seres vivos que surgiram na Terra foram os coacervatos, formados por um agregado de moléculas inorgânicas.

(d) a teoria da geração espontânea sustenta que os seres vivos surgiram a partir de moléculas orgânicas da atmosfera primitiva.

(e) os experimentos de Redi com pedaços de carne, no século XVII, corroboram a teoria da biogênese.

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Cientistas encontraram compostos de ferro, cianeto e monóxido de carbono em meteoritos que bombardea...

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