Problem:OPTIONS:
- helium bonds
- covalent bonds
- mineral bonds
- hydrogen bonds

Q: What explains why water molecules tend to stick together? A:
****
A: hydrogen bonds

Q: What is it called when pollen from one plant fertilizes another plant of the same species? A:
OPTIONS:
- cross-typing
- cross-breeding
- cross - vegetation
- cross-pollination
cross-pollination

Q: What produces gametes with different alleles? A:
OPTIONS:
- prokaryotes
- anthocyanins
- chromatids
- heterozygotes

Answer: heterozygotes

Question: Q: Mutations that lead to cancer usually occur in genes that control the cell cycle. these include tumor-suppressor genes and what? A:
OPTIONS:
- extinction - oncogenes
- apparition - oncogenes
- Darkness Oncogenes
- proto-oncogenes
Answer: proto-oncogenes

input with options: Q: What factor other than genes is important in determining adult height? A:
OPTIONS:
- intelligence
- cultivation
- relaxation
- nutrition
output: nutrition

Problem: OPTIONS:
- six times
- ten
- two times
- three times
Q: Q: The human genome has how many more alu elements than the chimpanzee genome? A:
Answer:
three times