Which of the following sequences indicates the promoter region of a gene?
a. CAAT
b. UAAG
c. CTTT
d. ACAT
e. TAAC
a
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Which of the following is not true of translesion synthesis (TLS)?
A. TLS uses polymerases with wider-than-normal active site architecture to accommodate abnormal nucleotides in the template. B. TLS lacks the 3'-5' exonuclease activity usually required for proofreading. C. It is activated during replication when the polymerase stalls at a lesion; the TLS polymerase takes over long enough to extend the DNA over the lesion. D. TLS can be used to repair lesions such as pyrimidine dimers, bulky adducts, and double-stranded breaks. E. All of these choices are true.
How many different codons are there?
a. 4 b. 16 c. 32 d. 64 e. 128
Describe the action of the enzyme transposase
What will be an ideal response?
One kind of vaccine consists of a solution containing ________
A) antibodies B) horse serum C) B cells D) a harmless variant of a disease-causing microbe