Problem: OPTIONS:
- four
- ten
- three
- nine
Q: Q: There are about 50,000 vertebrate species, and they are placed in how many different classes? A:
Answer: nine

Problem:OPTIONS:
- carbohydrate
- polymer
- amino acid
- phospholipid

Q: What is a molecule with two fatty acids and a modified phosphate group attached to a glycerol backbone? A:
****
A: phospholipid

Q: What is the term for rotation of a bone toward the midline of the body? A:
OPTIONS:
- visual rotation
- interior rotation
- lateral rotation
- medial rotation
medial rotation

Q: What do you call the gently sloped ocean floor nearest the edges of continents? A:
OPTIONS:
- continental divide
- continental stratosphere
- continental solution
- continental shelf

Answer: continental shelf

Question: Q: What are composed of a phosphate group, a sugar, and one of five different nitrogenous bases. A:
OPTIONS:
- prokaryotes
- cytotypes
- carotenoids
- nucleotides
Answer: nucleotides

input: OPTIONS:
- shrink properly
- open properly
- enlarge properly
- close properly Now, answer this question: Q: Varicose veins are veins that become enlarged because the valves no longer do this? A:
A:
output:
close properly