A zero (0) rating on the stress events scale indicates:
A. positive distress
B. eustress
C. negative distress
D. neustress
E. acute stress
Answer: D
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Activation of naïve B cells is a two-step process, during which
A. antigen triggers B-cell production of CCR7, which leads it to interact with T cells. B. antigen triggers T-cell production of CCR7, which recruits B cells. C. T-cell help stimulates B cells to produce CCR7, then divide. D. macrophages trigger B-cell production of CCR7, which leads it to interact with T cells. E. None of the above.
MHC class II molecules are made up of two chains called _______, whose function is to bind peptides and present them to _______ T cells:
a. alpha (?) and beta (?); CD4 b. alpha (?) and beta2-microglobulin (?2m); CD4 c. alpha (?) and beta (?); CD8 d. alpha (?) and beta2-microglobulin ?2m); CD8 e. alpha (?) and beta (?); ?:? T cells.
During a routine physical examination, a 65-year-old male patient tells the physician, "I have to get up several times during the night to pee." Based on this symptom, the physician suspects that the patient may have
A. a sexually transmitted disease B. diabetes mellitus C. prostate cancer D. a urinary tract infection E. benign prostatic hyperplasia
Which of the following muscles externally rotates the knee?
A. Semimembranosus B. Biceps femoris C. Semitendinosus D. Vastus lateralis