Q: What are flower cell walls made of?
Options:
- (A) cellular
- (B) lmestone
- (C) cellulitis
- (D) strong
- (E) cellulose
- (F) cellulite
- (G) heat energy
- (H) acetic acid
A: So, my chain of thought: Plants are multicellular eukaryotes with cell walls made of cellulose. Flowers are plant organs of reproduction. Flowers are multicellular eukaryotes with cell walls made cellulose. The answer is (E).

Q: What causes human disease?
Options:
- (A) HPV
- (B) UV
- (C) minerals
- (D) Tamiflu
- (E) mold
- (F) HIV
- (G) human growth
- (H) CFCs
A: So, my chain of thought: Viruses cause many human diseases. Examples include influenza, rabies, HIV, and Herpes viruses. Influenza causes human disease. The answer is (F).

Q: Fertilization occurs when an egg and what join together to form a diploid zygote?
Options:
- (A) rapid expansion
- (B) testosterone
- (C) gastropod shells
- (D) penis
- (E) peachleaf willow
- (F) pollen
- (G) male hormone
- (H) male gamete
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
So, my chain of thought: Fertilization occurs when a sperm and an egg fuse to form a diploid zygote. Male gametes are called sperm. Fertilization occurs when a male gamete and an egg fuse to form a diploid zygote. The answer is (H).