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