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DNA Review
Test Description: Review Time!
Instructions: Answer all questions to get your test result.
1) Nitrogen bases like A, T, G, and C always attach to
A
the deoxyribose
B
the phosphate group
2) Ribose is
A
a sugar
B
an amino acid
C
a protein
3) Deoxyribose is a
A
protein
B
sugar
C
amino acid
4) What holds the complementary base pairs together?
A
phosphate bond
B
sugar bond
C
super glue
D
a hydrogen bond
5) Which term describes the fact that the sides of DNA run in opposite directions?
A
purple
B
antiparallel
C
parallel
D
perpendicular
6) How many hydrogen bonds hold the nitrogen bases T and A together?
A
3
B
2
7) How many hydrogen bonds hold the nitrogen bases C and G together?
A
2
B
3
8) When 2 new DNA molecules are made, the 2 new molecules are...
A
different from the original DNA molecule
B
the same as the original DNA molecule
9) What is the first step in DNA replication?
A
Uncoiling the DNA strand
B
Adding RNA nucleotides
10) What is the second step in DNA replication?
A
Adding DNA nucleotides
B
Hold the DNA apart
*select an answer for all questions
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