S1 Review: DNA Question Preview (ID: 12177)


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Which of the following would represent the strand of DNA from which the mRNA strand CUCAAGUGCUUC was made?
a) CUCAAGUGCUUC
b) GAGUUCACGAAG
c) GAGTTCACGAAG
d) AGACCTGTAGGA

ATTG : TAAC ::
a) AAAT : TTTG
b) TCGG : AGAT
c) GTCC : CAGG
d) CGAA : TGCG

A change in a gene due to damage or being copied incorrectly is called
a) evolution.
b) meiosis.
c) segregation.
d) a mutation.

The enzymes responsible for adding nucleotides to the exposed DNA template bases are
a) replicases.
b) DNA polymerases.
c) helicases.
d) nucleotidases.

Genetically modified foods have a variety of benefits, such as
a) allergic reactions.
b) insect resistance.
c) decreased antibiotic efficacy.
d) gene transfer.

Which process produces a chain of amino acids?
a) translation
b) meiosis
c) transcription
d) replication

How many bases make up a codon?
a) 2
b) 3
c) 6
d) 9

Which process produces two identical copies of DNA?
a) transcription
b) replication
c) translation
d) diffusion

Which process results in the formation of an mRNA molecule?
a) replication
b) transcription
c) mitosis
d) translation

Which of the following best describes the relationship between mRNA and tRNA?
a) tRNA provides nitrogenous bases for mRNA.
b) mRNA delivers amino acids to tRNA.
c) tRNA translates the genetic code from mRNA.
d) mRNA uses proteins to build tRNA molecules.

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