What is the primary cell type associated with a cell-mediated immune response?
a. B cells
b. Macrophages
c. Helper T cells
d. Mast cells
e. Cytotoxic T cells
e
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A chicken has 78 chromosomes. A chicken cell will contain _____ chromosomes at the beginning of prophase and
_____ chromosomes after mitotic division is complete.
a. 78; 39 b. 78; 78 c. 39; 78 d. 156; 78 e. 78; 156
Of the following molecules, which would you predict diffuses most readily across membranes?
A) water B) glucose C) oxygen D) serine E) hydrogen ions
E. coli uses which of the following enzymes to regulate membrane fluidity?
A) glucose-6-phosphatase B) desaturase C) fatty acid convertase D) gangliosidase E) kinase
A friend of yours appears to have put on a lot of muscle very quickly. At the same time, you notice that your friend seems to have a lot of mood swings and appears depressed
It is reasonable for you to suspect that your friend has begun to take ________. A) amino acid supplements B) creatine C) protein powder D) an anabolic steroid