Which of the following is a phototroph?

A) a tree
B) a mushroom
C) soil bacterium
D) an earthworm
E) a person


Answer: A

Biology & Microbiology

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How does GIFT differ from IVF?

A. Fertility drugs are used to obtain the eggs. B. A woman is contracted and paid to carry the baby. C. The eggs and sperm are placed in the oviducts immediately after being brought together. D. A single sperm is injected into an egg. E. The sperm comes from a stranger.

Biology & Microbiology

On average, how many red blood cells are there in a microliter of blood?

a. 5,000 b. 50,000 c. 500,000 d. 5,000,000 e. 50,000,000

Biology & Microbiology

The small circles of DNA found in bacteria are called GENOMES.

a. true b. false

Biology & Microbiology

Contractile vacuoles

A) are generally found in protists that inhabit salt water. B) help in the excretion of excess salt. C) prevent cells from bursting as a result of the influx of excess water. D) allow organisms to avoid dehydration by absorbing water from the environment.

Biology & Microbiology