DNA: Question Preview (ID: 21919)


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Leading strand is in the what direction? The lagging strand?
a) 5' to 3', 3' to 5'
b) 3' to 5', 5' to 3'
c) All of the Answers
d) None of the Answers

What is DNA polymerase's job?
a) None of Them
b) to locate free bases in the cytoplasm and match them to the supplementary base on the DNA strand in the 5' to 3' direction
c) to locate free bases in the cytoplasm and match them to the complementary base on the DNA strand in the 3' to 5' direction
d) to locate free bases in the cytoplasm and match them to the complementary base on the DNA strand in the 5' to 3' direction

Because DNA polymerase can only go in one direction, what short segments get produced?
a) Primers
b) Okazaki Fragments
c) Leading Strands
d) Replication Forks

What is the replication fork?
a) the DNA yet to be opened by Helicase
b) the fork used for replication
c) the area of separated DNA strands
d) an enzyme for splitting the strand

What is a primer molecule?
a) the molecule that needs to be added to the site where DNA replication begins
b) the molecule that allows Helicase to work
c) the molecule that gets the DNA ready for construction into chromosomes
d) the molecule used to finish the process of DNA synthesis

The first step of DNA replication is what?
a) Creation of the needed enzymes
b) Helicase untwists the double helix DNA strand and separates it into two single stranded DNA molecules
c) DNA Polymerase locates free bases
d) Helicase seals the two finished strands

Who figured out the structure of DNA? Using what?
a) Watson and Crick, A Microscope
b) Watson and Crick, X-Ray Diffraction
c) Rosalind Franklin, A Microscope
d) Rosalind Franklin, X-Ray Diffraction

The total percentage of A, C, T, and G will add up to what?
a) 100%
b) 5.123456789101112131415161718192021222324252627282930313233343536373839%
c) 3.14159265359%
d) 0%

What are the purines?
a) A T
b) A G
c) T C
d) C A

What are the pyrimidines?
a) A G
b) T G
c) A C
d) T C

Nitrogen bases are bonded together using what type of bonds?
a) Nitrogen
b) Carbon
c) Hydrogen
d) Phosphorus

What is a deoxyribose sugar?
a) a five sided sugar (ribose) that is missing an Oxygen atom (deoxy)
b) a four sided sugar (ribose) that is missing an Oxygen atom (deoxy)
c) a five sided sugar (deoxy) that is missing an Oxygen atom (ribose)
d) a five sided sugar (ribose) that is missing two Oxygen atoms (deoxy)

All organisms must be composed of one or more cells that contain what?
a) Membrane-bound Nucleus
b) Plutonium
c) DNA
d) NaCl

DNA stands for what?
a) Deoxyribonucleic Acid
b) Dioxyribonucleic Acid
c) Detoxyribonucleic Acid
d) None of the Above

What make a nucleotide?
a) Deoxyribose Sugars
b) Phosphate Groups
c) Nitrogenous Bases
d) All of Them

What makes up a phosphate group?
a) A Phosphorus atom bonded to four Oxygen atoms
b) A Phosphorus atom bonded to three Oxygen atoms
c) A Phosphorus atom bonded to four Carbon atoms
d) Two Phosphorus atoms bonded to four Oxygen atoms

Cytosine pairs with what?
a) Adenine
b) Cytosine
c) Thymine
d) Guanine

Guanine pairs with what?
a) Adenine
b) Thymine
c) Cytosine
d) Guanine

Adenine pairs with what?
a) Thymine
b) Guanine
c) Cytosine
d) Adenine

What is the last step of DNA replication?
a) Helicase seals the two strands back together
b) Helicase anneals the two strands back together
c) Helicase opens up the DNA strands
d) All but Helicase opens the DNA strands

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