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Biochemistry - DNA Structure and Replication

Exercise : DNA Structure and Replication - Section 1
31.
Proteins involved in opening a replication bubble are
DNA helicases
single stranded binding proteins
ligase
DNA topoisomerase
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
What is the main damaging effect of UV radiation on DNA?
Depurination
Formation of thymine dimers
Single strand break
Dehydration
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
The higher order structure of DNA shows symmetry, whereas the higher order structures of most proteins do not. Why isn't protein shape more regular like DNA?
DNA has one main function in cells whereas proteins have many.
The many different amino acid R groups on proteins confer many different shapes.
Some S amino acids cause proteins to bend; others cause protein to flatten.
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
DNA helicase is used to
unwind the double helix
interact the double helix closely
break a phosphodiester bond in DNA strand
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Klenow fragment without free nucleotides exhibits
exonuclease activity
endonuclease activity
nickase activity
no activity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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