The B form of the DNA double helix contains a wider major groove and a narrower minor groove because the two polynucleotide strands are not positioned directly opposite one another in the helical cylinder.
Answer the following statement true (T) or false (F)
True
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The "charging" or activation of a tRNA molecule includes:
A. the covalent attachment of an amino acid to the 3'-terminal cytosine of the tRNA. B. the covalent attachment of the amino group of an amino acid to the tRNA. C. the covalent attachment of the carboxyl group of an amino acid to the tRNA. D. the covalent attachment of an amino acid to the 5'-terminal adenosine of the tRNA.
Which of the following is NOT true about
enzymatic regulatory molecules?
a. they allow an enzyme to catalyze many, diverse reactions. b. they may cause the enzyme to change its overall shape. c. they may enhance the activity of an enzyme. d. they may inhibit the activity of an enzyme. e. they may bind directly to an enzyme’s active site.
Match the statement with the type of DNA damage
A) pyrimidine dimer formation B) depurination C) deamination 1) caused by spontaneous hydrolysis of a glycosidic bond 2) induced by UV light 3) DNA glycosylase can repair this damage 4) occurs with G but not C
When there are high levels of disturbance in a community, the number of K-selected species should increase along with the overall diversity of the community.
Answer the following statement true (T) or false (F)