The branch of medicine that investigates the frequency and distribution of human diseases is

A) immunology.
B) physiology.
C) pathology.
D) epidemiology.
E) gene therapy.


Answer: D

Biology & Microbiology

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Indicate whether the statement is true or false.

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Which of the following is not true of vectors?

A. They contain a gene for drug resistance. B. An origin of replication (ORI) is present. C. They are easy to manipulate. D. They can detect RNA in cells. E. They must accept DNA of desired size.

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What would you assume if you found RNA transcripts of lactose-utilizing genes within E. coli?

A) Lactose has bound to the lac operon activator. B) Lactose is present in the cell. C) The lac operon activator protein is present in the cell. D) The lac operon repressor protein is absent in the cell.

Biology & Microbiology

Review the organisms that cause opportunistic mycoses and their predisposing factors by completing the sentence. Localized infections with this yeast include vaginal infections, forms of diaper rash, and an oral cavity infection known as ___________.

> Pneumocystis jiroveci > AIDS > Aspergillus > Thrush > Candida albicans > Antibiotics > Cryptococcus

Biology & Microbiology