Question

How do animals obtain the carbon needed to build carbon-based molecules? Select all that apply.

A) By converting chemical energy to solar energy
B) By rearranging carbon dioxide into oxygen
C) By performing photosynthesis
D) By ingesting food molecules
E) By rearranging other carbon-based molecules found in cells

Answer 1

Answer:

D) By ingesting food molecules AND

E) By rearranging other carbon-based molecules found in cells

Explanation:

We know A is incorrect because animals do not make solar energy (that is reserved for the sun)

We also know B is wrong because that is not obtaining carbon (rather oxygen).

We know C is wrong because animals do not perform photosinthesis.

D is correct because we do eat carbon based molecules and proteins, often in the form of carbohydrates or lipids.

E is also correct because cells do rearrange carbon based molecules for other uses.

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