What is the primary item inside a virus?
Options:
- (A) Chemical energy
- (B) particles
- (C) genetic material
- (D) cytoplasm
- (E) electromagnetic energy
- (F) bioaerosols
- (G) food and shelter
- (H) bacteria
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Let's think first: Viruses contain DNA but not much else. DNA DNA DNA is a person's genetic fingerprint. Viruses contain genetic material and not much else.... So the answer is [(C)]

How can cells of the tobacco mosaic be seen?
Options:
- (A) refraction of light
- (B) an area swollen with pus
- (C) by indirect light
- (D) death and devastation
- (E) bending light rays
- (F) electron microscope
- (G) deadly and devastating
- (H) Veins and arteries.
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Let's think first: Viruses are so small that they can be seen only with an electron microscope. Viruses include the Tobacco Mosaic Virus. Tobacco Mosaic is so small that it can only be seen with an electron microscope.... So the answer is [(F)]

What is a form of vesicle transport that requires energy?
Options:
- (A) absorption
- (B) glucose
- (C) Leptospirosis
- (D) a solute
- (E) Energy.
- (F) bioaerosols
- (G) direct energy
- (H) heat or cold
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Let's think first: Vesicle transport requires energy, so it is also a form of active transport. Absorption comes from active transport. Absorption is a form of vesicle transport that requires energy.... So the answer is [(A)]

What phylum do starfish belong to?
Options:
- (A) fertile
- (B) animals
- (C) Echinoderm.
- (D) Mollusca.
- (E) Sponge.
- (F) Absorb light
- (G) Annelid.
- (H) a fish
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Let's think first: Echinoderms have a unique water vascular system with tube feet. Each starfish arm is lined with tube feet. Starfish are echinoderms.... So the answer is [(C)]

What do cells make up of organisms?
Options:
- (A) structure only
- (B) function only
- (C) structure and function
- (D) members of their own species
- (E) Something that is self-aware
- (F) share properties
- (G) desires and needs
- (H) Most plants
--
Let's think first: Cells are the basic units of the structure and function of living things. An organism is a living thing or something that was once alive. Cells are the basic units of the structure and function of organisms.... So the answer is [(C)]

What are cell walls made of?
Options:
- (A) fossils
- (B) peat
- (C) moss
- (D) cations
- (E) Carbon
- (F) Fiber
- (G) Fungi
- (H) sodium
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Let's think first: Plants use cellulose for their cell walls. Basically, fiber is cellulose . Cells walls are fiber.... So the answer is [(F)]