One tumor suppressor protein which often results in cancer when it stops functioning is:
Options:
- (A) gene
- (B) p53
- (C) tumors
- (D) HIV
- (E) enzyme
- (F) tRNA
- (G) DNA
- (H) TRH
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Let's think first: Cancer is a disease that occurs when the cell cycle is no longer regulated. Another critical protein in regulating the cell cycle is the tumor suppressor protein p53 . Cancer is a disease that often results when tumor suppresor proteins, like p53, stop functioning.... So the answer is [(B)]


Earthworm burrows are good for plants because they
Options:
- (A) get air into soil
- (B) reducing acid rain
- (C) eliminate toxins
- (D) hydrate roots
- (E) preventing heat transfer
- (F) It helps them survive
- (G) kill pests
- (H) important habitats
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Let's think first: Earthworm burrows help aerate soil, which is also good for plants. Aerating means getting air into the wine. Earthworm burrows help getting air into soil, which is also good for plants.... So the answer is [(A)]


What is hair not considered?
Options:
- (A) lack
- (B) zinc
- (C) loss
- (D) Fat
- (E) long
- (F) CFCs
- (G) gold
- (H) p53
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Let's think first: Hair helps to insulate and protect the body. Lean body mass and body fat are derived from total body water. Hair is not considered fat.... So the answer is [(D)]


Sperm had to swim from male to female what for fertilization?
Options:
- (A) The flowers are pollinated
- (B) seed dispersal
- (C) that material's properties
- (D) produce offspring
- (E) Something coming from a gland
- (F) A compound that donates proton
- (G) metabolic reaction
- (H) Organs within the body.
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Let's think first: Sperm had to swim from male to female reproductive organs for fertilization. Within the body are the stomach and reproductive organs. Sperm had to swim from male to female organs within the body for fertilization.... So the answer is [(H)]


What helps producers make food?
Options:
- (A) Decomposition.
- (B) heat energy
- (C) honeybees
- (D) Chemical energy
- (E) Electrical energy
- (F) animals
- (G) an electric stove
- (H) Power plants
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Let's think first: Producers make food from inorganic molecules. Decomposition is the breakdown of organic molecules into inorganic molecules. Decomposition helps producers make food.... So the answer is [(A)]


Where in a cell are ribosomes located?
Options:
- (A) outside the nucleus
- (B) Most plants
- (C) solid, liquid, gas
- (D) allow growth
- (E) Veins and arteries.
- (F) Earth orbiting the Sun
- (G) Chlorophyll
- (H) the body's largest organ
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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
Let's think first: Ribosomes are structures in the cytoplasm where proteins are made. Outside the nucleus is cytoplasm. Ribosomes are structures outside the nucleus where proteins are made.... So the answer is [(A)]