What DNA elements are likely to be hypersensitive to digestion by DNase?
What will be an ideal response?
Ans: The promoters of actively transcribed genes are particularly hypersensitive to DNase digestion. The binding of transcription factors to the promoter causes the displacement of nucleosomes, exposing to the promoter to RNA polymerase but also to DNase action.
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The metabolic process of denitrification
A) oxidizes N2. B) oxidizes NO3-. C) reduces N2. D) reduces NO3-.
Cells that have developed an enlarged nucleus and lost some specialized structures and functions, but is not yet cancer, is called ________
Fill in the blank(s) with correct word
The two leaflike organs which may flank the base of the petiole where it joins the stem are called
A. blades. B. palisades. C. Casparian strips. D. stipules. E. pericycles.
Which of the following CANNOT be repaired by nucleotide excision repair (NER)?
A. chemically modified bases B. ultraviolet-induced damage C. missing bases D. mismatched bases E. pyrimidine dimers