Bio 142 Exam 1 Flashcards

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1
Q

Universe begins how many years ago?

A

13.7 Billion Years Ago

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2
Q

Earth forms when?

A

4.55 Billion Years Ago

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3
Q

When does life begin on Earth?

A

between 4 billion and 3.5 billion years ago

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4
Q

Prebiotic soup model?

A

Complex organic molecules

formed from gases in the atmosphere, and then fell into oceans

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5
Q

Surface metabolism model?

A

Complex organic
molecules formed when dissolved gases came into
contact with minerals in deep sea vents

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