The first identified case in an outbreak is called the

A. starter case.
B. traceable case.
C. primary case.
D. index case.


D

Biology & Microbiology

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Behavior that is entirely controlled by genes and has no learning component is

(a) learned. (b) habituated. (c) instinctive. (d) classically conditioned.

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Which of the following elements is NOT responsible for a significant portion of the mass of living

organisms? a. O b. S c. N d. H e. C

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Tissue transplantation has been made possible by our ability to

A) competitively inhibit HLA molecules. B) alter the expression of the HLA molecules. C) inhibit the binding of helper T cells to the HLA. D) closely match HLA molecules between individuals. E) inhibit interleukin-5.

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To what does RNA polymerase bind to begin the process of transcription?

A) promoter B) structural gene C) codon D) anticodon

Biology & Microbiology