Question

activator ~ 3 min

1. lipids, carbohydrates & dna all exist in human cells as long molecular chains (polymers). which of these describes how dna differs from lipids & carbs?

a. only dna has carbon atoms.
b. only dna is found in the cytoplasm.
c. only dna is needed to create new cells.
d. only dna contains genetic information.

1. what 2 steps summarize the creation of proteins?

Explanation:

To solve this, we analyze each option:

• Option A: Lipids (e.g., fats) and carbohydrates (e.g., sugars) also contain carbon atoms. So A is incorrect.
• Option B: DNA is mainly in the nucleus, while cytoplasm has other molecules. Lipids and carbs are in cytoplasm too. So B is incorrect.
• Option C: Lipids and carbohydrates are also needed for new cell creation (e.g., cell membrane from lipids, energy from carbs). So C is incorrect.
• Option D: DNA is the molecule that stores genetic information. Lipids (energy storage, structure) and carbohydrates (energy, structure) do not carry genetic info. So D is correct.

Answer:

D. Only DNA contains genetic information.