Bacteria methylate their DNA in order to:
a. prepare for DNA replication.
b. prepare for mitosis.
c. effectively infect other cells.
d. protect it from restriction enzymes.
e. prevent viral DNA from hybridizing with bacterial DNA.
D
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Glycolytic enzymes have been found to have roles in all of the following except
A) transcriptional repression. B) apoptosis inhibition. C) transcriptional activator. D) GTP hydrolysis. E) cell migration.
Which of the following respiratory tract defenses is mismatched?
A. Ciliary escalator - first line of defense B. IgA antibody - third line of defense C. Mucous membranes - third line of defense D. Nasal hairs - first line of defense E. Complement - second line of defense
What type of genetic cross involves two traits?
What will be an ideal response?
Which offspring inherit all their mitochondrial DNA from their mother and none from their father?
A. both sons and daughters B. daughters C. sons D. neither sons nor daughters