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zmey [24]
3 years ago
15

Which of these statements is part of the cell theory

Biology
2 answers:
Anna11 [10]3 years ago
4 0
Cells are the basic units of structure in living things
inessss [21]3 years ago
3 0
C cells are the basic unit of structure in living things
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True. You can get vitamin A as "preformed vitamin A" which is already active and/or you can get vitamin A as carotenoids which the body can turn into active vitamin A.

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2. Provitamin A, which is the inactive form, is found in plant-based foods, such as fruits and vegetables. The most common type of provitamin A is β-carotene, which is a carotenoid that the body can turn into active vitamin A via an enzyme named β-carotene 15,15'-monooxygenase.

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Most scientists agree that life began on earth approximately 3.5 billion years ago. What would a scientist need to do in order t
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Hence, the correct answer is 'change in population through genetic variation over time'.

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