DNA Structure Question Preview (ID: 1337)


Structure Of DNA. TEACHERS: click here for quick copy question ID numbers.

Adenine bonds with __________ while guanine bonds with __________
a) thymine; cytosine
b) thymine; adenine
c) guanine; cytosine
d) cytosine; thymine

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

The process of DNA replication occurs in the....
a) nucleus
b) cytoplasm
c) ribosome
d) middle of nowhere

DNA replication results in...
a) two identical moloecules of DNA
b) 1 molecule of new DNA and 1 molecule of old DNA
c) 2 identical molecules of DNA and 1 original molecule
d) 1 molecule of DNA

The enzyme responsible for unwinding & unzipping the DNA molecule is...
a) helicase
b) ligase
c) DNA polymerase
d) catalase

Which enzyme forms the new bonds between the backbone and the bases?
a) ligase
b) DNA polymerase
c) helicase
d) amylase

Which enzyme adds new nucleotides to the replicated strand of DNA?
a) helicase
b) DNA polymerase
c) ligase
d) saliva

The completely replicated strands of DNA are made of...
a) half new DNA and half old DNA
b) entirely new DNA
c) entirely old DNA
d) new DNA from mom and new DNA from dad

What is the name of the protiens used to coil and wrap-up DNA inside the nucleus?
a) histones
b) histamines
c) antibodies
d) hormones

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

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