BIO 351 MODULE 8 (2026/2027) QUESTIONS
AND CORRECT ANSWERS GRADED A+
The RNA polymerase can unwind approximately _____ bases, or about 1.6 turns
of B-DNA.
17
The process whereby two daughter molecules of DNA are formed by the exchange
of genetic material between two parent molecules is known as:
recombination.
The three-strand structure involved in strand invasion is:
the D-loop.
The coding strand has the _____ sequence as the RNA transcript (except that it has
T instead of U).
same
How many different sequence possibilities are there for a DNA polymer that is 10
bases long?
, 1,048,576
The Rho protein terminates transcription by acting as a(n) _____.
helicase
_____ is the enzyme that converts polycyclic aromatic hydrocarbons into a reactive
epoxide that alkylates the N-7 of guanine.
cytochrome P450
Adding lactose to E. coli culture results in _____ of expression of the lac operon.
induction
Exposure to aflatoxin B1 can lead to:
DNA damage by alkylation
The _____ effect stabilizes the structure of DNA, resulting in more polar surfaces
being exposed to the aqueous media.
hydrophobic
The primer for DNA synthesis is an RNA molecule formed by the enzyme _____.
AND CORRECT ANSWERS GRADED A+
The RNA polymerase can unwind approximately _____ bases, or about 1.6 turns
of B-DNA.
17
The process whereby two daughter molecules of DNA are formed by the exchange
of genetic material between two parent molecules is known as:
recombination.
The three-strand structure involved in strand invasion is:
the D-loop.
The coding strand has the _____ sequence as the RNA transcript (except that it has
T instead of U).
same
How many different sequence possibilities are there for a DNA polymer that is 10
bases long?
, 1,048,576
The Rho protein terminates transcription by acting as a(n) _____.
helicase
_____ is the enzyme that converts polycyclic aromatic hydrocarbons into a reactive
epoxide that alkylates the N-7 of guanine.
cytochrome P450
Adding lactose to E. coli culture results in _____ of expression of the lac operon.
induction
Exposure to aflatoxin B1 can lead to:
DNA damage by alkylation
The _____ effect stabilizes the structure of DNA, resulting in more polar surfaces
being exposed to the aqueous media.
hydrophobic
The primer for DNA synthesis is an RNA molecule formed by the enzyme _____.
