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BIO 1 DNA Structure And Replication
Test Description: BIO 1
Instructions: Answer all questions to get your test result.
1) The basic unit (monomer) of nucleic acids is the
A
nucleotide.
B
nucleosome.
C
nucleolus.
D
nitrogenous base.
2) In DNA, cytosine always pairs with
A
thymine.
B
another cytosine.
C
guanine.
D
adenine.
3) What type of bonds hold the bases of DNA together?
A
dermabonds
B
hydrogen bonds
C
covalent bonds
D
ionic bonds
4) In eukaryotic cells, DNA is tightly coiled around proteins called
A
keratin.
B
histomines.
C
histones.
D
collagen.
5) The DNA and protein tightly packed together in a eukaryotic cell's nucleus is called
A
kodachrome.
B
chromatin.
C
chromophore.
D
nucleochrome.
6) During DNA replication the enzyme that joins the new nucleotides together is called
A
nuclease.
B
helicase.
C
DNA polymerase.
D
RNA polymerase.
7) During DNA replicaton adenine will always base pair with
A
guanine.
B
another adenine.
C
thymine.
D
cytosine.
8) During replication DNA polymerase
A
loosens the DNA from the histone proteins.
B
proofreads the new strand of DNA checking for mistakes.
C
unwinds the double helix.
D
rewinds the DNA around the histone proteins.
9) Copying of DNA during replication begins at
A
the 5' end of the strand.
B
the base sequence AATGCCA.
C
the 3'end of the strand.
D
the replication forks.
10) At the end of DNA replication,
A
two completely new strands are formed. The old DNA has been degraded.
B
RNA has been made.
C
two DNA molecules each with one strand old and one strand new.
D
one old double stranded DNA and one new double stranded DNA result.
*select an answer for all questions
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