Which cell structure is important in adherence?

a. cell wall
a. fimbria
b. teichoic acid
c. lipopolysaccharide


Answer: A

Biology & Microbiology

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All of the following are true of hypertension

EXCEPT

a. it may be caused by diet. b. it usually develops after a person has a stroke. c. it may be genetic. d. it refers to chronically high blood pressure. e. it usually does not have any symptoms

Biology & Microbiology

What cytokine is secreted by active T cells and natural killer cells, and inhibits viral replication, enhances phagocytosis in macrophages, boosts production of antibodies by B cells, and activates both natural killer cells and cytotoxic T cells?

A) interleukin-4 B) interleukin-10 C) interferon-alpha D) interferon-gamma E) interleukin-5

Biology & Microbiology

Which structure is not a component of a nucleotide?

a. Phosphate group b. Sulfhydryl Oxygen group c. Nitrogen-containing base d. Pentose

Biology & Microbiology

Which of the following is true about the North American diet?

a. Most of our protein comes from plant sources. b. Approximately half of our carbohydrates come from simple sugars. c. Most of our fats come from plant sources. d. Most of our carbohydrates come from fibers.

Biology & Microbiology