Problem: OPTIONS:
- houses
- beaches
- tree tops
- ground
Q: Q: Liverworts are small plants that grow close to what? A:
Answer: ground

Problem:OPTIONS:
- hippocampus
- pituitary gland
- optic chiasm
- hypothalamus

Q: What also receives input from other areas of the forebrain through the medial forebrain bundle? A:
****
A: hypothalamus

Q: Which human body system system moves nutrients and other substances throughout the body? A:
OPTIONS:
- Digestive system
- Muscular system
- Integumentary system
- cardiovascular system
cardiovascular system

Q: What happens to temperature in the troposphere as the altitude increases? A:
OPTIONS:
- it increases
- it disappears
- it stays the same
- it decreases

Answer: it decreases

Question: Q: What is the name for a substance that can be used to follow the pathway of that substance through some structure? A:
OPTIONS:
- gel
- tracker
- solution
- tracer
Answer: tracer

input: OPTIONS:
- attach to the membrane
- move away from the membrane
- destroy the membrane
- cross the membrane Now, answer this question: Q: The electrochemical potential across a membrane determines the tendency of an ion to do what? A:
A:
output:
cross the membrane