When a nucleic acid undergoes hydrolysis, the resulting subunits are:a
fatty acids.
b. amino acids.
c. nucleotides.
d. carotenoids.
e. monosaccharides.
c
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An sRNA is isolated from a bacterial cell. What would you do to determine whether it is a cis-encoded or a trans-encoded sequence?
A. Analyze the molecular position of hydrogen atoms in the sRNA nucleotides. B. Determine whether the sRNA binds to mRNA or to tRNA. C. Identify whether or not the sRNA sequence is complementary to the coding strand of mRNA gene target. D. Find out if the sRNA acts as a transcriptional or as a translational inhibitor.
A key feature of all viral infections is the
A. integration of viral DNA into host DNA. B. disintegration of host DNA. C. addition of a lipid membrane to the virus. D. separation of viral nucleic acid from the capsid.
Which of the following is a typical means of halting normal cell division?
A) the shortening of telomeres B) increasing the activity of p53 C) activating oncogenes D) triggering apoptosis
In a moss, most of the plants that we see are ________; in a fern, the most dominant stage is the ________
A) gametophytes; gametophyte B) gametophytes; sporophyte C) sporophytes; gametophyte D) sporophytes; sporophyte