Severe Acute Respiratory Syndrome (SARS)
A. is not highly transmissible.
B. is caused by the respiratory syncytial virus.
C. can cause high fever, pneumonia, respiratory distress.
D. began with an initial outbreak in the United States and then spread to Canada and China.
E. All of the choices are correct.
Answer: C
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Which class of organisms makes up the detrital food web?
a. carnivores and decomposers b. decomposers and detritivores c. decomposers and producers d. herbivores and carnivores e. producers and herbivores
Two individuals are members of the same species if
they a. possess the same number of chromosomes. b. breed at the same time. c. are phenotypically indistinguishable. d. can mate and produce fertile offspring. e. occupy the same habitat.
Which of the following is required for the secretion of testosterone?
a. Sertoli cells b. FSH c. Leydig cells d. GnRH
An individual transport vesicle________
(a) contains only one type of protein in its lumen. (b) will fuse with only one type of membrane. (c) is endocytic if it is traveling toward the plasma membrane. (d) is enclosed by a membrane with the same lipid and protein composition as the membrane of the donor organelle.