Q: What are the tiny sacs in the lungs where gas exchange takes place? A:
OPTIONS:
- vacuoles
- ganglion
- chambers
- alveoli

Answer: alveoli

Question: Q: What do many fungi secrete that break down complex molecules to smaller molecules that can be absorbed? A:
OPTIONS:
- hormones
- water vapor
- carbohydrates
- enzymes
Answer: enzymes

input with options: Q: In some ways, a collection of gas molecules represents the simplest form of what? A:
OPTIONS:
- life
- energy
- protein
- matter
output: matter

Q: Q: The reverse process of moving material into a cell is the process of what? A:

OPTIONS:
- endocytosis
- proteolysis
- osmosis
- exocytosis

A: exocytosis

input: OPTIONS:
- hydrogen ion
- sulfide ion
- potassium ion
- fluoride ion Now, answer this question: Q: When a fluorine atom gains an electron, it becomes a negative what? A:
A:
output: fluoride ion

Question: Q: Homes and transportation use what percent of all energy in the u.s.? A:
OPTIONS:
- twenty five
- fifteen
- forty
- half (fifty)
Answer:
half (fifty)