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