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biology 1406 exam 5 Questions with Detailed
Verified Answers
In 1928, __________ was surprised to find that when he
killed pathogenic bacteria, then mixed the bacterial remains
with living harmless bacteria, some living bacterial cells
became pathogenic. Ans: Frederick Griffith
In 1952, ___________ used bacteriophages to
show that DNA is the genetic material of T2, a virus that infects the
bacterium Escherichia coli (E. coli). Ans: Hershey-Chase
__________ are viruses that infect bacterial
cells. Ans: Bacteriophages
______ discovered the relationships between DNA bases Ans: Erwin
Chargaff
______ Discovered the basic structure of DNA by x-ray
crystallography Ans: Rosalind Franklin
______ Built the first accurate model of a DNA molecule Ans: James
Watson and Francis Crick
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The sugar in DNA is Ans: deoxyribose.
The sugar in RNA is Ans: ribose
Pyrimidines Ans: c,t and u
Purines Ans: a and g
Sides of DNA are_______ Ans: sugar and phosphate backbone
Rungs of a DNA are Ans: nitrogenous bases
A=T Ans: 2 Hydrogen bonds
G = C Ans: 3 hydrogen bonds
DNA stores information in the _________ Ans: base pairs
Every 3 base pairs codes for an _________ Ans: amino acid
DNA is copied during _____________, and cells
can repair their DNA Ans: DNA replication
Replication begins at particular sites called
___________ Ans: origins of replication
two DNA strands are separated, opening up a __________ Ans:
replication bubble
At the end of each replication bubble is a
____________ , a Y-shaped region where
new DNA strands are elongating Ans: replication fork
_____________ are enzymes that untwist the double
biology 1406 exam 5 Questions with Detailed
Verified Answers
In 1928, __________ was surprised to find that when he
killed pathogenic bacteria, then mixed the bacterial remains
with living harmless bacteria, some living bacterial cells
became pathogenic. Ans: Frederick Griffith
In 1952, ___________ used bacteriophages to
show that DNA is the genetic material of T2, a virus that infects the
bacterium Escherichia coli (E. coli). Ans: Hershey-Chase
__________ are viruses that infect bacterial
cells. Ans: Bacteriophages
______ discovered the relationships between DNA bases Ans: Erwin
Chargaff
______ Discovered the basic structure of DNA by x-ray
crystallography Ans: Rosalind Franklin
______ Built the first accurate model of a DNA molecule Ans: James
Watson and Francis Crick
, Page | 2
The sugar in DNA is Ans: deoxyribose.
The sugar in RNA is Ans: ribose
Pyrimidines Ans: c,t and u
Purines Ans: a and g
Sides of DNA are_______ Ans: sugar and phosphate backbone
Rungs of a DNA are Ans: nitrogenous bases
A=T Ans: 2 Hydrogen bonds
G = C Ans: 3 hydrogen bonds
DNA stores information in the _________ Ans: base pairs
Every 3 base pairs codes for an _________ Ans: amino acid
DNA is copied during _____________, and cells
can repair their DNA Ans: DNA replication
Replication begins at particular sites called
___________ Ans: origins of replication
two DNA strands are separated, opening up a __________ Ans:
replication bubble
At the end of each replication bubble is a
____________ , a Y-shaped region where
new DNA strands are elongating Ans: replication fork
_____________ are enzymes that untwist the double
