Ques and Ans: Which of the following affects neurons?
Options:
- (A) nerves
- (B) voltage
- (C) Dehydration
- (D) electrically
- (E) heat
- (F) Botulism
- (G) fever
- (H) temperature
(F)
Logic for the answer: Neurons are the structural and functional units of the nervous system. Botulism affects the nervous system. Botulism affects neurons.

Ques and Ans: How do starfish communicate with each other?
Options:
- (A) huddle together
- (B) writing
- (C) during the day
- (D) pheromones
- (E) Chemical energy
- (F) waving their arms
- (G) Decibels
- (H) talking
(D)
Logic for the answer: Echinoderms use pheromones to communicate with each other. Echinoderms are represented by the starfish. Starfish use pheromones to communicate with each other.

Ques and Ans: What kicks in after a certain number of divisions?
Options:
- (A) Energy.
- (B) antibiotics
- (C) Energy
- (D) separation
- (E) nerves
- (F) apoptosis
- (G) soccer leagues
- (H) Plants growth
(F)
Logic for the answer: Cells are programmed to divide only a set number of times. Apoptosis is programed cell death. Division can only happen a certain number of times before apoptosis kicks in.

Ques and Ans: Thyroid hormones increase the rate of
Options:
- (A) by making heat
- (B) the rest of the body
- (C) female sex cells
- (D) Helps them grow
- (E) hydration of their cells
- (F) heat produced
- (G) converting food to energy
- (H) aerobic capacity
(G)
Logic for the answer:
Thyroid hormones increase the rate of metabolism in cells throughout the body. Metabolism is the process of converting food to energy. Thyroid hormones increase the rate of converting food to energy.