What are the source of antibody-producing cells?
A. Monocytes
B. T cells
C. Macrophages
D. B cells
E. Plasma cells
Answer: D
You might also like to view...
A group of your colleagues has collected disused lab equipment in a storage closet, with the intention of brewing their own hard cider for parties after work. After carefully sterilizing their equipment, they add apple juice, table sugar, and a bacterial culture derived from fermenting yogurt to several large bottles, leaving each half empty, then turn off the lights, lock the closet, and wait. After checking a week later, your colleagues are disappointed to discover that the contents of their bottles are not fit for human consumption. What mistake did they make?
a. Without light, the fermentation process was unable to begin. b. Air in the bottles caused the apple juice to oxidize and decompose. c. Bacteria perform lactic acid fermentation, not alcohol fermentation. d. Alcohol fermentation will not occur without a constant heat source.
Community ____ is the description and analysis of patterns and processes within a community
a. structure b. functioning c. ecology d. dynamics e. association
Which of the following represents the order of increasingly higher levels of organization of chromatin?
A) nucleosome, 30-nm chromatin fiber, looped domain B) looped domain, 30-nm chromatin fiber, nucleosome C) nucleosome, looped domain, 30-nm chromatin fiber D) 30-nm chromatin fiber, nucleosome, looped domain
Chagas disease involves transmission of the pathogen by the
A. tsetse fly. B. hard-bodied tick. C. Anopheles mosquito. D. reduviid, "kissing," bug. E. phlebotomine (sand) fly.