Which of the following statements concerning rheumatoid arthritis (RA) is TRUE?
A) It occurs in humans and animals.
B) The symptoms are due to damage caused by cytotoxic T cells.
C) There is no genetic influence on the likelihood of developing RA.
D) Accumulations of antibody complexes lead to inflammation in and destruction of the joints.
E) The onset of disease is clearly correlated with having been infected with a specific microbe.
D
Bloom's Taxonomy: Comprehension
Section: Hypersensitivities
Learning Outcome: 18.10
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In marine environments,
A) both species richness and productivity increase with latitude. B) species richness increases and productivity decreases with latitude. C) species richness decreases and productivity increases with latitude. D) both species richness and productivity decrease with latitude.
Which of the following is not a characteristic of parenchyma cells?
a. They all lack the ability to photosynthesize. b. They can differentiate into other kinds of cells in response to an injury to the plant. c. They may contain various storage materials, such as starch grains, oils, or water. d. They must be living cells in order to function. e. They may secrete substances of various types.
Mitosis is controlled at the ________ checkpoint
A) G2 B) M C) G1 D) S E) C
Under what conditions would you expect a plant to have the highest concentration of abscisic acid (ABA)?
A) wet tropical rain forest B) cool environment after a heavy rain C) houseplant growing in low light conditions D) desert after a long drought