X inactivation can lead to ____________________ in females who are heterozygous for X-linked genes. Fill in the blank(s) with the appropriate word(s)

The swarming gram-negative bacillus that can be presumptively identified on the basis of a positive indole test is:

a. Klebsiella pneumoniae. b. Proteus vulgaris. c. Enterobacter aerogenes. d. Shigella sonnei.

Lectin binds to certain carbohydrates to begin the activation of the classical complement pathway.

Answer the following statement true (T) or false (F)

The quick response of the immune system to a second infection is due to

A. activation of macrophage cells. B. suppression of suppressor cells. C. T and B memory cells. D. high levels of antigen. E. new cytotoxic T cells.

Endotoxins must be eliminated from biomanufactured products because they ________

A) render the product inactive B) interfere with the product's absorption C) cause pain, fever, and more severe symptoms in humans D) are from unknown origin E) cause problems for the cell line used to produce the product