Protein is made from:
Options:
- (A) Acids
- (B) DNA code
- (C) fur and fat
- (D) insects
- (E) animals
- (F) Energy.
- (G) Energy
- (H) food
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Let's think first: Chromosomes contain genes, which code for proteins. Information on DNA is organized into genes. DNA codes for proteins.... So the answer is [(B)]

When it rains in the mountains where would the rain fall?
Options:
- (A) looseness of dirt or compost
- (B) Plant growth is reduced
- (C) It used to be covered by water
- (D) Inches or fractions of inches.
- (E) air mass over Earth's surface
- (F) on the windward side
- (G) In the winter
- (H) colder and wetter
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Let's think first: Precipitation falls on the windward side of the mountain range. Rain is also known as precipitation. Rain would fall on the windward side of the mountain range.... So the answer is [(F)]

Which animal has a circulatory system with a three-chambered heart?
Options:
- (A) animals
- (B) Salamander
- (C) fur seals
- (D) mammals
- (E) alpacas
- (F) a fish
- (G) warm-blooded
- (H) barnacles
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Let's think first: Amphibians have a relatively complex circulatory system with a three-chambered heart. Frogs, toads and salamanders are amphibians. Salamanders have a relatively complex circulatory system with a three-chambered heart.... So the answer is [(B)]

Coral reefs provide what to many living beings in the ocean
Options:
- (A) Chemical energy
- (B) salt and water.
- (C) shelter and amusement
- (D) survival
- (E) important habitats
- (F) food and water
- (G) water and fun
- (H) food and shelter
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Let's think first: Coral reefs provide food and shelter to many ocean organisms. Organisms or living beings are literally things that are alive. Coral reefs provide food and shelter to many ocean living beings.... So the answer is [(H)]

What is produced by the fermentation in corn and other plants?
Options:
- (A) carbon dioxide
- (B) white vinegar
- (C) gasoline
- (D) grain alcohol
- (E) glucose
- (F) vinegar
- (G) Organic compounds
- (H) chlorofluorocarbons
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Let's think first: Ethanol is produced by alcoholic fermentation of the glucose in corn or other plants. Ethanol is a grain alcohol. Grain alcohol is produced by fermentation of the glucose in corn or other plants.... So the answer is [(D)]

What kind of life cycle do desmids have?
Options:
- (A) allow growth
- (B) Leptospirosis
- (C) varied life cycle
- (D) solid, liquid, gas
- (E) Veins and arteries.
- (F) immortal
- (G) fixed life cycle
- (H) static life cycle
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Let's think first: Algae have varied life cycles. Desmids are green algae, members of the Chlorophyta. Desmids have varied life cycles.... So the answer is [(C)]