Plasma cells
A. are derived from T lymphocytes.
B. function in blood clotting.
C. function in cell-mediated immunity.
D. produce and secrete antibodies.
Answer: D
You might also like to view...
Which of the following viruses is/are not transmitted sexually?
A) hantavirus B) herpes simplex viruses C) human immunodeficiency virus D) papillomaviruses
Which occurs only in anaerobic metabolism of glucose?
A. acetyl CoA formation B. glycolysis C. lactate fermentation D. oxidative phosphorylation E. citric acid cycle
Organisms from all classifications of life are composed of cells
A. true B. false
A population of 1,000 birds exists on a small Pacific island. Some of the birds are yellow, a trait determined by a recessive allele. The others are green, a characteristic determined by a dominant allele. A hurricane on the island kills most of the birds from this population. Only ten remain, and those birds all have yellow feathers. Which of the following statements is true?
A) Assuming that no new birds come to the island and no mutations occur, future generations of this population will contain both green and yellow birds. B) The hurricane has caused a population bottleneck and a loss of genetic diversity. C) This situation illustrates the principle of adaptive radiation. D) This situation illustrates the effect of a mutation event. E) The ten remaining birds will mate only with each other, and this will contribute to gene flow in the population.