Humoral immunity involves ________, while ________ function in cell-mediated immunity.
A. monocytes; basophils
B. B cells; T cells
C. basophils; T cells
D. B cells; neutrophils
E. T cells; B cells
Answer: B
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A 76-year-old man with intermittent fevers has blood cultures drawn three times. The second set is positive and grew out of a Corynebacterium spp. This organism is considered:
a. pathogenic. b. virulent. c. a contaminant. d. normal flora.
Bacterial pneumonia in children is most commonly caused by:
a. M. pneumoniae. b. Chlamydia pneumonia. c. parainfluenza virus. d. Staphylococcus aureus.
Which of the following is responsible for the storage of extra bile, used to aid in the digestion of fats?
A. gallbladder B. liver C. pancreas D. stomach E. small intestine
A(n)________ ________ is a piece of DNA with all of the features necessary for chromosomal replication and that can carry large (up to 1000 kb) pieces of foreign DNA into a host organism.
What will be an ideal response?