Q: Protein digestion begins in the stomach as pepsinogen in gastric juice is converted to pepsin, the enzyme that hydrolyzes this? A:
OPTIONS:
- disulfide bridges
- hydrogen bonds
- ionic bonds
- peptide bonds
peptide bonds

Q: What kind of energy is released when the thermochemical reaction of a campfire converts wood to carbon dioxide and water? A:
OPTIONS:
- ultraviolet
- light
- smoke
- heat

Answer: heat

Question: Q: The nitrogen cycle includes air, soil, and what? A:
OPTIONS:
- water
- decomposers
- heat
- living things
Answer: living things

input with options: Q: In physics, work means the use of what to move an object? A:
OPTIONS:
- mass
- energy
- leverage
- force
output: force

Q: Q: German doctor rudolf virchow first discovered what process when studying living cells under a microscope? A:

OPTIONS:
- radiation
- evolution
- photosynthesis
- cell division

A: cell division

Q: The ability of a water spider to walk across a body of water is an example of what? A:
OPTIONS:
- high density
- low gravity
- magnetism
- surface tension
surface tension