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DNA Replication Review
Test Description: Biology Texas
Instructions: Answer all questions to get your test result.
1) This enzyme is responsible for piecing together Okazaki fragments.
A
helicase
B
ligase
C
polymerase
D
primase
2) This enzyme is responsible for breaking apart the DNA molecule's hydrogen bonds.
A
polymerase
B
helicase
C
primase
D
ligase
3) This enzyme adds RNA primers onto the lagging DNA strand.
A
helicase
B
primase
C
polymerase
D
ligase
4) The lagging strand is the
A
5' to 3' strand
B
5 to 3 strand
C
3' to 5' strand
D
3 to 5 strand
5) The 5' to 3' strand lags because
A
this strand is protected by bulky ribosomes
B
DNA can only be synthesized in the 3' to 5' direction
C
this strand is longer than the leading strand
D
DNA can only be synthesized in the 5' to 3' direction.
6) The 3' to 5' strand leads because
A
as it's copied, the resulting DNA strand is synthesized in the 5' to 3' direction
B
this strand is not blocked by bulky molecules.
C
the resulting DNA strand requires no proof reading.
D
as it's copied, the resulting DNA strand is synthesized in the 3' to 5' direction
7) A strand of DNA is copied and the resulting copy was synthesized discontinuously. This synthesized DNA was copied from
A
the leading strand
B
the lagging strand
C
the 3' to 5' strand
D
the 3 to 5 strand
8) DNA replication is semi-conservative because
A
each strand of the DNA molecule is copied and the 2 copies come together to make an entirely new helix
B
each replicated DNA molecules contains two newly synthesized DNA strands
C
the DNA molecule is copied using almost no ATP
D
each replicated DNA molecule contains an original strand and a newly synthesized DNA strand
9) An RNA primer is required by the ______ strand.
A
3' to 5'
B
lagging
C
chromosomal
D
leading
10) DNA replication occurs during the ____ phase of the cell cycle
A
G1
B
M
C
S
D
G2
11) What does DNA do?
A
gives instructions for how to make proteins
B
gives instructions for how to evolve
C
nothing much
D
RNA does everything
12) Which molecule leaves the nucleus with the DNA's instructions?
A
DNA 2
B
ribosomes
C
enzymes
D
RNA
13) Molecules ending in -ase are known as
A
enzymes
B
nucleic acids
C
lipids
D
steroids
14) Proteins include
A
nucleotides
B
glucose
C
ATP
D
enzymes
15) A nucleotide consists of all of the following except
A
A nitrogenous base
B
An amino acid
C
A phosphate group
D
A sugar ring
16) Hydrogen bonds are useful for DNA molecules because
A
they are incredibly strong and allow the DNA molecule to be formed into chromosomes
B
they are incredibly strong and do not allow the DNA molecule to be readily separated
C
they are fairly weak and allow the DNA molecule to be transported outside of the nucleus
D
they are fairly weak, allowing for the DNA molecule to be separated as needed
17) In RNA, uracil replaces
A
thymine
B
guanine
C
adenine
D
cytosine
18) DNA gets replicated for all of the following reasons except
A
the cell needs to prepare for mitosis
B
the cell needs to make more cells
C
daughter cells need one copy of the DNA each
D
the cell needs to move DNA outside of the nucleus
19) During interphase, the cell's DNA is in _____ form
A
chromatin
B
chromatid
C
chromosome
D
RNA
20) All living organisms, from prokaryotes to eukaryotes, store their genetic information in the form of
A
DNA
B
organelles
C
membrane bound vesicles
D
proteins
*select an answer for all questions
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