Which of the following modifications found on amino acids is also used to modify nucleic acids?
A. phosphorylation
B. glycosylation
C. methylation
D. fatty acid modification
E. hydroxylation
C
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Which type of regulatory protein(s) is/are present in Archaea?
A) Activators that stimulate RNA polymerase activity are present in Archaea. B) Repressors that block RNA polymerase activity are present in Archaea. C) Both activators and repressors are present in Archaea. D) Similar to regulation in Eukarya, Archaea lack bacterial-like regulators such as activators and repressors and use transcription factors instead.
Hemophilia is an X-linked trait caused by the allele h. About 1 in 10,000 males (0.0001) has hemophilia. The
frequency of the h allele in males is therefore _____________________. Fill in the blank(s) with the appropriate word(s).
In a polar covalent bond, each atom can have a slight ______
Fill in the blank(s) with the appropriate word(s)
Macroscopically visible growths or clusters of microorganisms on solid media are called ________.
Fill in the blank(s) with the appropriate word(s).