Aging is associated with degrading:
Options:
- (A) Most plants
- (B) an object
- (C) Acids
- (D) telomeres
- (E) layers of fat
- (F) Chlorophyll
- (G) vegetation
- (H) the skin
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Let's think first: Aging is associated with the death of cells. Telomeres degrade as the cells divide and their shortening causes cell death. Aging is associated with degrading telomeres.... So the answer is [(D)]

What happens to aquatic life if acidity is higher or lower than a narrow range?
Options:
- (A) Plant growth is reduced
- (B) They may not survive.
- (C) Aquatic life sinks
- (D) harm them
- (E) It is endangered
- (F) Damages them
- (G) Aquatic life moves to dry land
- (H) Aquatic life flourishes
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Let's think first: All life relies on a relatively narrow range of pH, or acidity. If the pH level is higher or lower, aquatic life is endangered. Aquatic life is endangered if acidity is higher or lower than a narrow range.... So the answer is [(E)]

Where can slime mold, a fungus like protist, most likely be found?
Options:
- (A) in a log cabin
- (B) swamp vegetation
- (C) mouth of rivers
- (D) an area swollen with pus
- (E) in decomposing matter
- (F) Germy surfaces
- (G) on a new car
- (H) on a mushroom dish
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Let's think first: Slime molds are fungus-like protists commonly found on rotting logs and compost. Decomposition and composting takes place. Slime molds are fungus like protists commonly found on rotting logs and decomposed matter.... So the answer is [(E)]

Cells do not include
Options:
- (A) harmful substances
- (B) sulfate particles
- (C) the smallest agent of disease
- (D) direct damage to the lungs
- (E) sub-units of species
- (F) Inches or fractions of inches.
- (G) Something with a head, thorax, and abdomen
- (H) Direct sunlight.
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Let's think first: Viruses are not cells. Viruses Viruses are the smallest agents of disease. The smallest agents of disease are not cells.... So the answer is [(C)]

Endocrine hormones travel through the what in something that runs like water?
Options:
- (A) body
- (B) muscle
- (C) state
- (D) a path
- (E) ligt
- (F) a fish
- (G) liquid
- (H) CO 2
--
Let's think first: Endocrine hormones travel throughout the body in the blood. And blood, blood runs like water. Endocrine hormones travel through the body in something that runs like water.... So the answer is [(A)]

Which of the following can travel longer than migrants each day?
Options:
- (A) humans
- (B) ducks
- (C) Whales
- (D) insects
- (E) fur seals
- (F) mammals
- (G) vehicles
- (H) alpacas
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Let's think first: Migrants typically travel long distances. Whales travel long distances each day. While migrants would typically do so, whales can travel longer each day.... So the answer is [(C)]