A doctor discovers that her patient can produce antibodies against some bacterial pathogens, but he is unable to protect himself against viral infections. The doctor suspects a disorder in her patient's
A. macrophages.
B. B cells.
C. cytotoxic T cells.
D. plasma cells.
E. suppressor T cells.
Answer: C
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The microbiome represents all the genes present in the trillions of microbes living on and in adult humans.
Answer the following statement true (T) or false (F)
____ contain DNA, but are not considered to be alive because they cannot reproduce independently of
their host.
a. Prions b. Eukaryotes c. Prokaryotes d. Viruses e. Cells
This image shows an area in which a glacier has melted. What is indicated by the number “2”?
a. competition for food resources b. resource partitioning between two competing species c. emergence of climax species d. colonization by pioneer species e. secondary succession
Angina is caused by ischemia. Therefore, angina is often treated with:
What will be an ideal response?