Which of the following is not mutagenic?
A) 5BU
B) AZT
C) Nitrous acid
D) Hydroxylamine
E) Acridine
B
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A homeotic mutation results in which of the following?
A. Incorrect formation of the body axes B. Replacement of segments with parasegments C. Replacing of one body part with another D. Apotosis
When using the scientific method, scientists make several fundamental assumptions. Which of these does not make sense, based on your knowledge of the scientific method?
A. There are specific causes for events observed in the natural world. B. The causes for events can be identified. C. There are general rules or patterns that can be used to describe what happens in nature. D. An event that occurs repeatedly probably has different causes.
Protist photosynthesis relies on
A) eyespots. B) silica. C) pseudopods. D) pseudoplasmodia. E) chloroplasts.
If a T cell is exposed to a "hidden" antigen, what kind of immune reaction will result?
A) an autoimmune disease B) a delayed hypersensitivity reaction C) a cytotoxic hypersensitivity reaction D) allergic contact dermatitis E) an allergy