Which taste modality does not involve activation of a G-protein coupled receptor?
A. bitter
B. sweet
C. umami
D. sour
E. all taste sensations involve GPCRs
D. sour
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The high variability of the types of G protein-coupled receptors allows for:
A. different types of cells to respond to different types of signals. B. different types of signal-transduction pathways to respond to signals. C. a rapid response to cell signals. D. a sensitive response to cell signals. E. All of these choices are correct.
Which of the following statements most accurately describes the anatomy of a multicellular fungus?
A. Numerous hyphae make up a mycelium. B. Numerous mycelia make up a hypha. C. Numerous mycelia make up a fruiting body. D. Numerous fruiting bodies make up a mycelium. E. Numerous septa make up a hypha.
Explain what happens to the catalase molecule and activity when the pH is on either side of the optimum level.
What will be an ideal response?
Most CO2 reacts with water inside red blood cells to form bicarbonate due to the enzymatic activity of __________.
Fill in the blank(s) with the appropriate word(s).