The alkylating agent nitrosoguanidine adds methyl groups to nucleotide bases and is repaired by which enzyme that removes the added methyl group and restores nucleotides to their normal form?
What will be an ideal response?
O6-methylguanine methyltransferase
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Which of the following is not true of the ? repressor protein, cI?
A. It binds DNA as a monomeric protein. B. It is inactivated by autocleavage through interaction with RecA protein. C. When bound to OR2 it activates transcription from PPM. D. It represses the transcription of early genes necessary for lytic growth.
AIDS is a secondary immunodeficiency disease that affects several types of immune cells.
Answer the following statement true (T) or false (F)
Which of the following traits is not characteristic of arthropods?
a. jointed appendages b. hardened exoskeleton c. specialized developmental stages d. lack segmentation
In the Urea Agar, the agar turns pink when
A. The pH is increased B. The pH is irrelevant C. The pH is decreased D. The pH did not change