Which of the following genetic elements is transcribed into a single mRNA?
a. The inducer
b. The repressor
c. The promoter
d. The operator
e. The structural genes
Answer: e. The structural genes
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Enumerating cells in a biofilm is especially challenging for
A) microscopic direct counting. B) measuring turbidity. C) viability counts with spread plating. D) microscopic direct county, measuring turbidity, and viability counts with spread plating.
___ cells are required for almost all parts of the innate and adaptive immune responses to function properly.
What will be an ideal response?
For charged particles, transport across the cell membrane is influenced by the concentration gradient and ____
a. the size of the particle b. pore size c. electrical gradient d. ATP production
e. membrane thicknessWhich of the following usually occur during exercise? (Select all that apply.)
a. Increase in blood flow to the kidneys b. Increase in sympathetic nervous system output c. Increase in total peripheral resistance d. Increase in stroke volume