Which region(s) of the ribosome accept(s) charged tRNA molecules during the elongation phase of translation?
a. the A site
b. the A site or the E site
c. the P site
d. the P site or the E site
e. the E site
ANSWER: a
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The process in which an organism maintains internal conditions within tolerable ranges by sensing and responding to change is called___.
a. Photosynthesis b. Glycolysis c. Homeostasis d. Equilibrium e. Gluconeogenesis
Methanogens are classified as ____
a. Crenarchaeota only b. Euryarchaeota only c. Korarchaeota d. Nanoarchaeota e. both Crenarchaeota and Euryarchaeota
A situation in which the birth rate equals the death rate is called
a. an intrinsic limiting factor. b. exponential growth. c. saturation. d. zero population growth. e. geometric growth.
Estrogen is a lipid soluble hormone that can easily cross membranes. Knowing this, what can be concluded about estrogen receptors?
A. The receptors would be coupled to a G-protein. B. The receptors would also be lipid soluble and able to cross membranes. C. The receptors would be on the plasma membrane. D. The receptors would be linked to enzymes that triggered a kinase cascade. E. The receptors would be found inside the cell.