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olga2289 [7]
3 years ago
7

The digestive system:

Biology
2 answers:
Lapatulllka [165]3 years ago
5 0

Answer:

D is the correct answer.

Mademuasel [1]3 years ago
4 0
D. Mechanically and chemically breaks down food for nutrient absorbtion
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The shape of an enzyme is very important because it has a direct effect on how it catalyzes a reaction. An enzyme's shape is determined by the sequence of amino acids in its structure, and the bonds which form between the atoms of those molecules.
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Which of the following statements BEST defines vestigial structures? :
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Structures that are still present but currently serve little to no purpose

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<em>Vestigial structures/organs are general defined as structures/organs that are present but poorly developed without any functional use in the present living organisms but thought to have been fully developed and functional in their ancestors.</em>

Fully developed and functional organs gradually become less developed and non-functional across generations as the environment keeps changing and organisms found lesser use for the organs. An example includes the <u>caudal vertebrae</u> found in man which is kind of useless but thought to have been fully developed and functional in the ancestors of man - the monkeys.

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