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DNA Structure
Test Description: Structure of DNA
Instructions: Answer all questions to get your test result.
1) Adenine bonds with __________ while guanine bonds with __________
A
guanine; cytosine
B
thymine; cytosine
C
cytosine; thymine
D
thymine; adenine
2) The covalent bonds in the backbone of DNA are:
A
strong to increase the flexibility of the molecule
B
strong to provide structure & support to the molecule
C
weak to dissolve in soap
D
weak to break easily in replication
3) The process of DNA replication occurs in the....
A
ribosome
B
cytoplasm
C
nucleus
D
middle of nowhere
4) DNA replication results in...
A
1 molecule of new DNA and 1 molecule of old DNA
B
2 identical molecules of DNA and 1 original molecule
C
two identical moloecules of DNA
D
1 molecule of DNA
5) The enzyme responsible for unwinding & unzipping the DNA molecule is...
A
catalase
B
DNA polymerase
C
helicase
D
ligase
6) Which enzyme forms the new bonds between the backbone and the bases?
A
ligase
B
DNA polymerase
C
amylase
D
helicase
7) Which enzyme adds new nucleotides to the replicated strand of DNA?
A
saliva
B
DNA polymerase
C
helicase
D
ligase
8) The completely replicated strands of DNA are made of...
A
entirely new DNA
B
entirely old DNA
C
new DNA from mom and new DNA from dad
D
half new DNA and half old DNA
9) What is the name of the protiens used to coil and wrap-up DNA inside the nucleus?
A
histamines
B
hormones
C
histones
D
antibodies
10) The parts of a nucleotide are...
A
thymine and adenine
B
sugar-phosphate backbone
C
sugar, phosphate, and nitrogen bases
D
deoxyribose sugars and cytosine or guanine
*select an answer for all questions
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