Problem: OPTIONS:
- spreading friction
- static friction
- rolling friction
- sliding friction
Q: Q: What type of friction is friction that acts on objects when they are sliding over a surface? A:
Answer: sliding friction

Problem:OPTIONS:
- 4
- 11
- 2
- 3

Q: E. coli uses how many enzymes to take up and metabolize lactose? A:
****
A: 3

Q: What do you call the splitting of the nucleus of an atom into two smaller nuclei? A:
OPTIONS:
- critical fission
- nuclear fusion
- cell division
- nuclear fission
nuclear fission

Q: Proto-oncogenes are positive cell-cycle regulators but when mutated, they can become what? A:
OPTIONS:
- microbes and cause cancer
- bacteria and cause cancer
- cultigens and cause cancer
- oncogenes and cause cancer

Answer: oncogenes and cause cancer

Question: Q: What is the name for an underground layer of rock that is saturated with groundwater? A:
OPTIONS:
- gradient
- aqueous cavity
- artesian well
- aquifer
Answer: aquifer

input: OPTIONS:
- carbohydrates
- proteins
- nucleic acid
- lipids Now, answer this question: Q: What are biochemical compounds that living things use to store energy and make cell membranes? A:
A:
output:
lipids