A disease that is world-wide like HIV/AIDS is said to be

A. Communicable
B. Epidemic
C. Ubiquitous
D. Endemic
E. Pandemic


Answer: E. Pandemic

Biology & Microbiology

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What happens during depolarization?

A. Potassium ions flow out of the cell. B. Sodium ions flow into the cell. C. The sodium/potassium pump protein reverses itself. D. Potassium ions flow out of the cell AND sodium ions flow into the cell.

Biology & Microbiology

Which of the following can be determined from the

above figure? a. It uses neutral dyes to stain the bands. b. The chromosomes came from a male. c. The chromosomes came from a female. d. It has too many chromosomes. e. None of these can be determined.

Biology & Microbiology

Megaspore mother cells are diploid

Indicate whether the statement is true or false

Biology & Microbiology

Answer the following questions true (T) or false (F)

1. Isotype switching of antibodies is beneficial because some pathogens are able to alter their antigens. 2. A patient with a high antibody titer to a pathogen for which there is no vaccination indicates that this person is currently infected with the pathogen or was infected in the past. 3. Artificial immunity is characterized by short-lived protection immune protection because the patient is not making their own memory cells or antibodies.

Biology & Microbiology