Q:  _carry signals that control sexual development and reproduction
Options:
- (A) sex hormones
- (B) electricity
- (C) nucleic acid
- (D) Most plants
- (E) animals
- (F) genes
- (G) dendrites
- (H) photons
A: So, my chain of thought: Sex hormones are chemical messengers that control sexual development and reproduction. Chemical messengers carry signals from one nerve branch to another. Sex hormones carry signals that control sexual development and reproduction. The answer is (A).

Q: What does the base of the food chain provide food for?
Options:
- (A) It helps them survive
- (B) sediments
- (C) Most plants
- (D) other organisms
- (E) our planet
- (F) energy systems
- (G) fruits
- (H) Animal survival
A: So, my chain of thought: Producers are organisms that produce food for themselves and other organisms. Producers are the base of the food chain. The base of the food chain help provide food for other organisms. The answer is (D).

Q: What helps cells take up sugar from the blood in the body?
Options:
- (A) exercise
- (B) sugar
- (C) Energy
- (D) Energy.
- (E) bones
- (F) pancreas
- (G) insulin
- (H) blood cells
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
So, my chain of thought: Insulin helps cells take up glucose from the blood. For instance, glucose is a sugar. Insulin helps cells take up sugar from the blood. The answer is (G).