Which of the following enzymes are NOT secreted by TH1 to activate macrophages?
A) granulocyte-monocyte colony stimulating factor
B) interferon gamma
C) TNF-?
D) fibrin
Answer: D
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The production of cyclic AMP in Dictyostelium results in ____
a. sexual reproduction b. cell division c. swimming d. spore production e. aggregation of cells
Penicillins and cephalosporins
A. damage cell membranes. B. block peptidases that cross-link glycan molecules. C. attach to the 30S ribosomal subunit and disrupt protein synthesis. D. are metabolic analogs of PABA and block folic acid synthesis. E. destroy peptidoglycan.
A polar body, once formed, has no further function and dies. Indicate whether the statement is true or false
A consequence of raising the temperature well above the maximum growth temperature when culturing bacteria is
What will be an ideal response?