When amino acids are degraded in cells, into what intermediate(s) of the aerobic respiration process are the carbon skeletons of amino acids primarily converted?
A. Pyruvate
B. Pyruvate and Citric acid cycle intermediates
C. Citric acid cycle intermediates
D. Pyruvate and acetyl-CoA
E. Acetyl-CoA
Answer: B
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In humans, nitric oxide is an important gaseous neurotransmitter. Nitric oxide is synthesized by three isoforms of nitric oxide synthase (NOS). What would be a likely effect if a male were missing the gene that codes for one of the NOS isoforms?
A. He would be unable to produce all the liquid components of semen. B. He would have a low sperm count due to decreased spermatogenesis. C. He would have high levels of mutation within his mature sperm. D. He would have difficulty getting and/or sustaining an erection.
The growth rate of a population is expressed as:
a. b ? d. b. i ? e. c. K ? N. d. dN / r. e. (K ? N) / K.
Define positive feedback and describe why they are not necessarily beneficial to organisms. Include a description of
the changes associated with severe blood loss and circulatory shock to substantiate your answer. What will be an ideal response?
What two types of resistors are used as safety features in houses?