During fermentation, ________ compounds both donate and accept electrons, with no need for external electron acceptors, but during respiration, ________ electron donors are oxidized with exogenous compounds serving as electron acceptors
a. inorganic / organic
b. organic / inorganic
c. organic / inorganic or organic
d. inorganic or organic / organic
Answer: C
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A. axon B. dendrite C. soma D. nucleus E. axon hillock
Genomic imprinting is generally due to the addition of methyl (-CH3 ) groups to C nucleotides and chemical histone changes to silence a given gene
If this depends on the sex of the parent who transmits the gene, which of the following must be true? A) Genes required for early development stages must not be imprinted. B) Methylation of this kind must occur more in males than in females. C) Methylation must be reversible in ovarian and testicular cells. D) The imprints are transmitted only to gamete-producing cells.
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A. they are on the same chromosome. B. they control unrelated traits. C. they are sex linked. D. they control related traits. E. they are on different chromosomes.
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