Q: What signals the secretion of gastric acid? A:

OPTIONS:
- hormone
- pepsin
- leptin
- gastrin

Answer: gastrin

Q: What type of orbit do the planets make in the solar system? A:

OPTIONS:
- vertical
- conical
- figure eight
- elliptical

Answer: elliptical

Q: What increases in processes in which solid or liquid reactants form gaseous products and when solid reactants form liquid products? A:

OPTIONS:
- evaporation
- glucose
- respiration
- entropy

Answer: entropy

Q: During which phase does dna replication occur in the cell cycle? A:

OPTIONS:
- resting
- gap
- mitosis
- synthesis

Answer:
synthesis