Two cells that contain similar steroid receptors may nevertheless respond differently to the steroid if they:
A) contain different DNA strands
B) make different steroid receptor cofactors
C) have been exocised
D) lack lipid nuclei
Ans: B) make different steroid receptor cofactors
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In prokaryotes, the concentration of cAMP
a. increases with increased glucose concentration. b. decreases with increased glucose concentration. c. negatively regulates operons such as the lac operon. d. makes CAP. e. degrades CAP.
Litter degrades into a dark brown or black homogeneous organic matter known as ________
Fill in the blank(s) with correct word
If glycolysis is considered universal, which of the following illustrates that?
a. Glycolysis occurs in Archaea, Bacteria, and Eukarya. b. Glycolysis occurs in Archaea and Eukarya. c. Glycolysis occurs in Bacteria and Eukarya. d. Glycolysis occurs in Archaea and Bacteria.
Confocal microscopes exhibit improved contrast and resolution by ________.
A. blocking out stray light with an aperture located above the objective lens B. use of light at longer wavelengths C. use of ultraviolet light to illuminate the specimen D. illumination of a large area of the specimen