Which statement is true of carbon monoxide?
a. It is a waste product of photosynthesis.
b. It is always present when organic material burns.
c. It is harmless.
d. It has a strong odor.
e. It is a greenhouse gas.
ANSWER: b
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Dr. John Doe, a research microbiologist for a university medical center, has been accused of sending Bacillus anthracis, the causative agent of anthrax, through the mail to the President. You, as a public health official with the CDC, have to determine if it is the same strain as the two strains of B. anthracis found cultured in his lab. Which method of identification would you use to compare these three bacterial samples?
A. Pulse-field gel electrophoresis B. Biochemical test identification C. Serological testing using agglutination D. Gram staining
The acid group in an amino acid is the ______________ group. Fill in the blank(s) with the appropriate word(s)
Interleukin-1 stimulates ________________, which activate the remainder of the T and B cell immune system responses.
A. B cells B. T cells C. helper T cells D. natural killer cells
Some protozoans can form _________ that allow them to survive environmental hardships
Fill in the blank(s) with the appropriate word(s).