Once they have been processed through the citric acid cycle, the acetyl-CoA molecules from a single glucose molecule will produce:
A. 2 ATP, 6 NADH, 4 CO2.
B. 6 NADH, 6 GTP.
C. 6 FADH2, 2 ATP, 6 CO2.
D. 6 GTP, 6 FADH2.
E. 4 CO2, 6 FADH2, 2 ATP.
A
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Arrange the events in the pathway activated by G-protein-coupled receptors (GPCRs) in the correct order
1. Activation of effector 2. Activation of protein kinases 3. Receptor binds first messenger 4. Production of second messenger 5. Activation of G protein
a. 1?3?5?2?4 b. 2?3?5?4?1 c. 3?1?5?4?2 d. 3?5?1?4?2 e. 3?5?2?4?1
In his studies of colonization of hard substrates by various subtidal invertebrates, Michael Keough found that, among isolated bare patches, __________ more successfully colonized the smaller patches.
A) the better competitors, tunicates and sponges, B) the disturbance-adapted species, bryozoans and polychaetes, C) the large predators, such as starfish, D) microbial films, consisting of bacteria and fungi,
The opening of stomata is thought to involve _____
A) an increase in the solute concentration of the guard cells B) active transport of water out of the guard cells C) decreased turgor pressure in guard cells D) movement of K+ from the guard cells
Corn, peppers, tomatoes, and cucumbers all contain seeds and are derived from the ovary of a flowering plant. Therefore, in scientific terms, they are
A) fruits. B) vegetables. C) sporophytes. D) seeds.