What is/are a component of the complement system that coats the bacterial surface, acting as an opsonin to enhance phagocytosis of bacteria?
A) C2c
B) C3b
C) CD8
D) CD4
E) polysaccharides
Answer: B) C3b
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In contrast to positive ssRNA viruses such as coronaviruses and polioviruses, the genome of retroviruses
A) lacks genes encoding for tRNA primers. B) must first integrate into the host's genome before transcription. C) is negative ssRNA. D) lacks ribonuclease activity.
Microvilli are located on the _______ of a cell
A. basolateral surface B. basement membrane C. apical surface D. adjacent surface
What causes transpiration?
a. hydrogen bonding b. the drying power of air c. cohesion d. turgor pressure e. tension
Most genetic counselors
A. have an M.D. and/or Ph.D. degree. B. are individuals who have previously sought counseling themselves. C. are trained in biology and psychology, but are unfamiliar with lab and clinical procedures. D. work in individual private counseling offices. E. have none of these traits.