Consider the following two half reactions:NAD+ + H+ + 2e? ? NADH Eo (volts) = ? 0.32Pyruvate? + 2H+ + 2e? ? lactate 2? Eo(volts) = ? 0.19In a redox reaction involving NAD/NADH and pyruvate, ________ will be the electron donor and ________ will be the electron acceptor.
A. NAD+; pyruvate
B. lactate; pyruvate
C. NADH; pyruvate
D. pyrvuate; lactate
Answer: C
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Which of the following would be an example of an endemic species?
a. zebra mussels b. Batrachochytrium dendrobatidis c. Pongo pygmaeus d. Rana catesbeiana
When people have health issues associated with their kidneys doctors may prescribe diuretic drugs. Why would someone with high blood pressure be prescribed these drugs?
A. Diuretic drugs decrease urine flow and the kidney does not have to work as hard. B. Diuretic drugs increase urine flow and salt loss and salt was bad for the heart. C. Diuretic drugs decrease urine flow and the more fluid and watery blood is easier to pump. D. Diuretic drugs increase urine flow and the loss of nitrogenous wastes helps the heart. E. Diuretic drugs increase urine flow and decrease the blood volume that must be pumped.
Agrobacterium infects plants and causes them to form tumors. You determine that tumor formation requires a large amount of the plant's energy for tissue formation. How might this change the number of offspring a plant produces
, and what is the most likely explanation for this change? A) The number of offspring should increase, because in general, illness increases the reproductive output of organisms. B) The number of offspring should increase, because the bacteria will provide energy for the plant. C) The number of offspring should decrease, because the plant will divert energy from reproduction to tumor formation. D) There should be no effect of infection on offspring production because energy for reproduction is independent of infection.
Ciliary muscles are involved in:
A. controlling the amount of light entering the eye. B. tracking an image. C. blood supply to the eye. D. focusing an image onto the retina.