What percentage of marriages in the past decade were preceded by living together?
a. 36%
b. 46%
c. 56%
d. 66%
C
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A problem with the use of bromides is _____.
A. the resulting high is measured in seconds B. bromides build up in the body C. bromides induce hallucinations D. bromides are carcinogenic
During a secondary immune response, high-affinity IgG antibodies are produced. Which of the following best explains why low-affinity IgM antibodies are not made?
a. Naive pathogen-specific B cells are suppressed by negative signaling through Fc?RIIB1. b. Naive pathogen-specific B cells isotype switch and hypermutate much more quickly during secondary immune responses. c. Memory B cells outnumber naive B cells. d. Low-affinity IgM antibodies are made only when antigen concentration is exceedingly high.
Prevention of UTIs include all of the following EXCEPT:
A) drink six to eight glasses of water per day. B) wipe from front to back. C) wear tight-fitting clothes. D) urinate before and after sexual intercourse.
Any nonzero number divided by zero is ____.
A. zero B. one C. one hundred D. undefined