input: OPTIONS:
- hydrophillic head , and adhesion tails
- hydrophillic head , and substrate tails
- hemophillic head, and substrate tails
- hydrophillic head , and hydrophobic tails Now, answer this question: Q: What two things are a phospholipid molecules composed of? A:
A:
output: hydrophillic head , and hydrophobic tails

Q: Pollutants in surface water can filter into the ground and enter a what? A:

OPTIONS:
- hydro plant
- turbine
- combustion aquifer
- groundwater aquifer

Answer: groundwater aquifer

Problem: OPTIONS:
- 25
- 24
- 13
- 23
Q: Q: How many pairs of chromosomes are found in human cells? A:
Answer: 23

Problem:OPTIONS:
- hydrogen
- neon
- oxygen
- carbon

Q: What element is all life built around? A:
****
A: carbon

Q: Dessication is an extreme and usually fatal form of what in animals? A:
OPTIONS:
- diarrhea
- depletion
- starvation
- dehydration
dehydration

Q: What system plays a critical role in the regulation of vascular homeostasis? A:
OPTIONS:
- endocrine system
- circulatory system
- renal system
- nervous system

Answer:
nervous system