Please choose the answer that explains how the chemical leukocidin, produced by S. aureus, affects the host.
A) The skin begins to peel away from underlying tissues.
B) The immune system is not able to make antibodies.
C) It causes the production of boils all over the body.
D) Inflammation and phagocytosis are severely compromised.
D) Inflammation and phagocytosis are severely compromised.
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Which of the following environments would be most likely to harbor a biodiversity hotspot?
a. tropical island b. temperate grassland c. temperate deciduous forest d. desert e. savanna
Anaphylactic shock
A. occurs when the allergen has entered the bloodstream. B. is an immediate allergic reaction. C. is characterized by a sudden and life-threatening drop in blood pressure. D. All of these are true. E. None of these are true.
In comparing mitosis and meiosis, which statement is true?
A. Meiosis I is more like mitosis than is meiosis II. B. Both processes result in four cells. C. Crossing over of homologues occurs in both. D. Chromatids are present only in mitosis. E. Meiosis II resembles mitosis.
The part of the immune system that consists of the phagocytic cells located in reticular connective tissue is called: