GENETICS EXAM 1 AND ITS
VERIFIED ANSWERS
C
What characteristic is not necessary for a molecule that is
the genetic material?
A. It must contain complex information
B. It must be variable
C. It must perform the action associated with the
phenotype
D. It must have the ability to replicate faithfully
E. It must encode the phenotype
A and C
A key discovery leading to the structure of DNA was done
by Chargaff. He found that ____________ (2)
A. The amount of A equals the amount of T, and the
amount of G equals the amount of C
B. The amount of A equals the amount of G, and the
amount of C equals the amount of T
C. The tetra nucleotide hypothesis is false
D. The amount of A equals the amount of C, and the
amount of G equals the amount of T
C
What did Griffith discover with his experiments?
A. That bacteria can infect mice
B. That the genetic material contains acidic and phosphate
groups
C. The transforming principle in bacteria
,D.That protein is the genetic material
E. That DNA is the genetic material
A
In Avery, MacLeod, and McCarty's experiments,
homogenates from heat-killed bacteria were treated with
different enzymes, and then the ability of those
homogenates to transform bacteria was assayed. Under
which condition would transformation not occur?
A. Treatment with DNase
B. Treatment with protease
C. Treatment with RNase
D. Treatment with RNase and protease
B
In the Hershey-Chase experiment, DNA was
demonstrated to be the genetic material because the P 32
label for DNA localized to ____________
A. The bacteriophage coats
B. The bacterial pellet
C. The blender
D. The bacterial pellet and the supernatant
E. The supernatant
A
In experiments involving tobacco mosaic virus, Fraenkel-
Conrat and Singer demonstrated ___________
A. That in some cases RNA can be the genetic material
B. That in some cases both RNA and protein can be the
genetic material
C. That in all cases DNA is the genetic material
D. That in some cases protein can be the genetic material
B
, The sugar in DNA is called deoxyribose because it
________
A. Binds the nitrogen base via an O atom
B. Is missing a 2' OH group
C. Contains a 2' OH group
D. Is missing a 5' OH group
E. Is missing a 3' OH group
D and E
What is a purine? (2)
A. A nucleoside
B. Cytosine or Uracil
C. A base with one ring
D. Adenine or Guanine
E. A base with two rings
D
A strong covalent bond between adjacent nucleotides is
a/an __________
A. Ionic bond
B. Hydrogen bond
C. Phosphate bond
D. Phosphodiester bond
E. Van der Waals bond
B and C
What does the term antiparallel mean? (2)
A. The 5' end of one strand is opposite the 5' end of the
second strand
B. The 5' end of one strand is opposite the 3' end of the
second strand
C. The strands run in opposite directions
D. The strands separate in opposite directions
E. The strands run in the same direction
VERIFIED ANSWERS
C
What characteristic is not necessary for a molecule that is
the genetic material?
A. It must contain complex information
B. It must be variable
C. It must perform the action associated with the
phenotype
D. It must have the ability to replicate faithfully
E. It must encode the phenotype
A and C
A key discovery leading to the structure of DNA was done
by Chargaff. He found that ____________ (2)
A. The amount of A equals the amount of T, and the
amount of G equals the amount of C
B. The amount of A equals the amount of G, and the
amount of C equals the amount of T
C. The tetra nucleotide hypothesis is false
D. The amount of A equals the amount of C, and the
amount of G equals the amount of T
C
What did Griffith discover with his experiments?
A. That bacteria can infect mice
B. That the genetic material contains acidic and phosphate
groups
C. The transforming principle in bacteria
,D.That protein is the genetic material
E. That DNA is the genetic material
A
In Avery, MacLeod, and McCarty's experiments,
homogenates from heat-killed bacteria were treated with
different enzymes, and then the ability of those
homogenates to transform bacteria was assayed. Under
which condition would transformation not occur?
A. Treatment with DNase
B. Treatment with protease
C. Treatment with RNase
D. Treatment with RNase and protease
B
In the Hershey-Chase experiment, DNA was
demonstrated to be the genetic material because the P 32
label for DNA localized to ____________
A. The bacteriophage coats
B. The bacterial pellet
C. The blender
D. The bacterial pellet and the supernatant
E. The supernatant
A
In experiments involving tobacco mosaic virus, Fraenkel-
Conrat and Singer demonstrated ___________
A. That in some cases RNA can be the genetic material
B. That in some cases both RNA and protein can be the
genetic material
C. That in all cases DNA is the genetic material
D. That in some cases protein can be the genetic material
B
, The sugar in DNA is called deoxyribose because it
________
A. Binds the nitrogen base via an O atom
B. Is missing a 2' OH group
C. Contains a 2' OH group
D. Is missing a 5' OH group
E. Is missing a 3' OH group
D and E
What is a purine? (2)
A. A nucleoside
B. Cytosine or Uracil
C. A base with one ring
D. Adenine or Guanine
E. A base with two rings
D
A strong covalent bond between adjacent nucleotides is
a/an __________
A. Ionic bond
B. Hydrogen bond
C. Phosphate bond
D. Phosphodiester bond
E. Van der Waals bond
B and C
What does the term antiparallel mean? (2)
A. The 5' end of one strand is opposite the 5' end of the
second strand
B. The 5' end of one strand is opposite the 3' end of the
second strand
C. The strands run in opposite directions
D. The strands separate in opposite directions
E. The strands run in the same direction
