BSC 2010 CH. 16, 17, 18 REVIEWEXAM
QUESTIONS AND 100% CORRECT ANSWERS
Pair up the nucleotide bases with their complementary partners.
Write the complementary sequence for the following DNA sequence, in order from 3' to 5':
5′−CGATATTGAGCTAAGCTT−3′
3′− GCTATAACTCGATTCGAA −5′
Rank the following base pairs according to their stability.
Rank from most to least stable
If you measure the amounts of the bases in any sample of DNA, you'll find that
the amount of A + the amount of G = the amount of T + the amount of C.
Which statement expresses a real difference between DNA and RNA?
DNA is much longer than RNA.
What holds the strands of the DNA double helix together?
Hydrogen bonds between purines and pyrimidines.
If you were to analyze a DNA sample from a eukaryotic cell, you would find that:
the number of purines equals the number of pyrimidines.
the number of guanines equals the number of cytosines.
The building blocks or monomers of nucleic acid molecules are called
nucleotides
The flow of genetic information in a cell goes from
DNA to RNA to protein
When nucleotides polymerize to form a nucleic acid
a covalent bond forms between the sugar of one nucleotide and the phosphate of a second
In the accompanying image, a nucleotide is indicated by the letter
B
Which of these is a difference between a DNA and an RNA molecule?
DNA is usually double-stranded, whereas RNA is usually single-stranded.
This is an image of a(n)
, nucleotide
The letter A indicates a
phosphate group
A nitrogenous base is indicated by the letter
C
You can tell that this is an image of a DNA nucleotide and not an RNA nucleotide because
you see a
sugar with two, and not three, oxygen atoms
Which of these nitrogenous bases is found in DNA but not in RNA?
thymine
Which of these is(are) pyrimidines?
C, D, and E
In a nucleotide, the nitrogenous base is attached to the sugar's _____ carbon and the
phosphate group is attached to the sugar's _____ carbon.
1' ... 5'
Nucleic acids are assembled in the _____ direction.
5' to 3'
In a DNA double helix an adenine of one strand always pairs with a(n) _____ of the
complementary strand, and a guanine of one strand always pairs with a(n) _____ of the
complementary strand.
thymine ... cytosine
This is an image of a
phage
Who demonstrated that DNA is the genetic material of the T2 phage?
Hershey and Chase
The radioactive isotope 32P labels the T2 phage's
DNA
Hershey and Chase used _____ to radioactively label the T2 phage's proteins.
35S
QUESTIONS AND 100% CORRECT ANSWERS
Pair up the nucleotide bases with their complementary partners.
Write the complementary sequence for the following DNA sequence, in order from 3' to 5':
5′−CGATATTGAGCTAAGCTT−3′
3′− GCTATAACTCGATTCGAA −5′
Rank the following base pairs according to their stability.
Rank from most to least stable
If you measure the amounts of the bases in any sample of DNA, you'll find that
the amount of A + the amount of G = the amount of T + the amount of C.
Which statement expresses a real difference between DNA and RNA?
DNA is much longer than RNA.
What holds the strands of the DNA double helix together?
Hydrogen bonds between purines and pyrimidines.
If you were to analyze a DNA sample from a eukaryotic cell, you would find that:
the number of purines equals the number of pyrimidines.
the number of guanines equals the number of cytosines.
The building blocks or monomers of nucleic acid molecules are called
nucleotides
The flow of genetic information in a cell goes from
DNA to RNA to protein
When nucleotides polymerize to form a nucleic acid
a covalent bond forms between the sugar of one nucleotide and the phosphate of a second
In the accompanying image, a nucleotide is indicated by the letter
B
Which of these is a difference between a DNA and an RNA molecule?
DNA is usually double-stranded, whereas RNA is usually single-stranded.
This is an image of a(n)
, nucleotide
The letter A indicates a
phosphate group
A nitrogenous base is indicated by the letter
C
You can tell that this is an image of a DNA nucleotide and not an RNA nucleotide because
you see a
sugar with two, and not three, oxygen atoms
Which of these nitrogenous bases is found in DNA but not in RNA?
thymine
Which of these is(are) pyrimidines?
C, D, and E
In a nucleotide, the nitrogenous base is attached to the sugar's _____ carbon and the
phosphate group is attached to the sugar's _____ carbon.
1' ... 5'
Nucleic acids are assembled in the _____ direction.
5' to 3'
In a DNA double helix an adenine of one strand always pairs with a(n) _____ of the
complementary strand, and a guanine of one strand always pairs with a(n) _____ of the
complementary strand.
thymine ... cytosine
This is an image of a
phage
Who demonstrated that DNA is the genetic material of the T2 phage?
Hershey and Chase
The radioactive isotope 32P labels the T2 phage's
DNA
Hershey and Chase used _____ to radioactively label the T2 phage's proteins.
35S
