Which cell migrates to the thymus gland to mature?
A. mast cell
B. B cell
C. T cell
D. monocyte
E. natural killer cell
Answer: C. T cell
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Secondary treatment of sewage involves the use of which type of process?
A. Virus removal/inactivation B. Biological removal of inorganic nutrients C. Biological removal of dissolved organic matter D. Physical/chemical removal of insoluble particulate materials
If a person is highly alert, anxious, and has loss
of fine motor control, what type of drug have they most likely taken?
a. a narcotic analgesic b. a stimulant c. a depressant d. a hallucinogen e. none of these
__________ tissue is the most abundant vertebrate tissue type
Fill in the blank(s) with the appropriate word(s).
Active transport is transport
a. in an energetically unfavorable direction always driven by hydrolysis of ATP. b. in an energetically unfavorable direction always coupled to another reaction or source of energy. c. in an energetically unfavorable direction driven only by the flow of another molecule across a membrane. d. in an energetically favorable direction coupled to the hydrolysis of ATP.