Genetics exam 1 UPDATED ACTUAL Exam
Questions and CORRECT Answers
C - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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
3 - CORRECT ANSWER - The number of hydrogen bonds between complementary G-C
pairs is __________
Nucleoid - CORRECT ANSWER - A distinct clump of prokaryotic DNA observed via
electron microscopy is referred to as ________
Questions and CORRECT Answers
C - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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 - CORRECT ANSWER - 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
3 - CORRECT ANSWER - The number of hydrogen bonds between complementary G-C
pairs is __________
Nucleoid - CORRECT ANSWER - A distinct clump of prokaryotic DNA observed via
electron microscopy is referred to as ________
