Question

exam lesson name: nutrition and digestion
exam number: 700673rr
▶ exam guidelines
▶ exam instructions

question 1 of 20 :
select the best answer for the question

1. whats a carbohydrate?

○ a. a sugar molecule
○ b. a cholesterol molecule
○ c. a hormone
○ d. an enzyme
□ mark for review (will be highlighted on the review page)

Explanation:

To determine the correct answer, we analyze each option:

• Option A: Carbohydrates are organic compounds composed of carbon, hydrogen, and oxygen, and sugars are a type of carbohydrate (monosaccharides, disaccharides, etc.).
• Option B: Cholesterol is a lipid, not a carbohydrate.
• Option C: Hormones are signaling molecules, often proteins or steroids, not carbohydrates.
• Option D: Enzymes are typically proteins (or RNA in some cases) that act as catalysts, not carbohydrates.

So the correct answer is the one that identifies a carbohydrate correctly.

Answer:

A. A sugar molecule