Which cells or cell components play an essential role in the clotting of blood?
a. erythrocytes
b. platelets
c. leukocytes
d. hemoglobin
e. plasma
B
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Which is the correct order of protein mediators that are produced during an acute inflammatory response?
A. Chemotaxins, selectins, kallikreins, integrins B. Integrins, kallikreins, selectins, chemotaxins C. Kallikreins, chemotaxins, integrins, selectins D. Selectins, integrins, chemotaxins, kallikreins
When scientists transferred the gene for the AVP receptor from male voles into male mice, the male mice
a. began to eat roots, a preferred food of voles b. attempted to locate and mate with female voles c. preferred female mice they had already mated with to new females d. ceased normal social behaviors such as grooming and co-sleeping e. became aggressive and territorial
The niche of an earthworm in an ecosystem is
a. a producer. b. a consumer. c. a detritivore. d. a decomposer. e. more than one of these.
A throat swab from a patient with a sore throat has been plated onto blood agar. At what temperature should it be incubated?
a. 25oC b. 30oC c. 37oC d. any of the above temperatures is appropriate