Why do phagocytes dramatically increase metabolic rate and oxygen consumption
when they begin phagocytosis?
What will be an ideal response
Many products of oxygen are powerfully antimicrobial, and phagocytes expend a great deal of energy producing
these oxygen products. Glucose is broken down for energy and the production of lactic acid and hydrogen
peroxide. The lactic acid contributes to an acidic environment in the phagosome. The hydrogen peroxide is
catalyzed by myeloperoxidase and other enzymes to form peroxide anions (O2-), hydroxyl radicals (OH-), and
singlet oxygen, all of which are very damaging to microbes.
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Which of the following statements regarding phimosis is NOT true?
a. It is a condition seen only in men. b. It is narrowing of the urethra. c. It may cause difficulty with urination and infection. d. A surgical treatment is circumcision.
In the medical term brachytherapy, the prefix means
A. medical treatment B. short C. broken D. implanted E. upper arm
Overambitious goals are a common barrier to change
Indicate whether the statement is true or false
It typically takes two to three weeks after initial HIV infection for sufficient antibodies to develop in the body to show a positive ELISA test result
Indicate whether the statement is true or false