Which of the following is not an antiphagocytic factor?
A. Ability to survive intracellularly
B. Adhering to the host
C. Secretion of slime
D. Production of leukocidins
E. Secretion of a capsule
Answer: B
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The time it takes for half of a radioisotope's atoms to decay ____
a. cannot be calculated b. is used to construct the geologic time scale c. is its half-life d. is the same for uranium 238 and carbon 14 e. is highly variable
Trace the flow of blood entirely through both the pulmonary and systemic circulations. Start and end with the right
atrium. Be sure to list all structures through which the blood will pass, including all valves and major blood vessels entering and exiting the heart. What will be an ideal response?
Respiratory acidosis results when ____ are produced more rapidly than they are removed
a. oxygen molecules b. carbon dioxide molecules c. chloride ions
d. hydrogen ions e. carbonic anhydrase molecules
Which of the following structures is made of membranes?
A. nucleolus B. centriole C. chloroplast D. ribosomes