BIO 181 Exam 2 with all Correct & 100% Verified
Answers| Actual Complete Exam |Already Graded A+
(Just Released)
In eukaryotic cells the start codon for protein synthesis is ______. ✔Correct Answer--AUG
True/False
The DNA polymerase that replicates the parental strand of DNA reads the parental DNA from 5' to 3"
and makes a new DNA strand from 3' to 5'. ✔Correct Answer--false
Which sugar is present in RNA? ✔Correct Answer--ribose
True/False
During DNA replication (mutation) is greatly reduced by enzymes that proof read the newly
replicated DNA. ✔Correct Answer--true
How many "stop" codons exist? ✔Correct Answer--3
In the ribosome, what pairs with the codon? ✔Correct Answer--anticodon
List the two basic categories of nitrogenous bases in nucleic acids. ✔Correct Answer--purines and
pyrimidines
Which enzyme unwraps the double helix?
a. Helicase
b. DNA polymerase III
c. DNA polymerase I
d. Nucleosome
e. DNA ligase ✔Correct Answer--a. helicase
In DNA, what does the nucleotide labeled as A pair with? ✔Correct Answer--Thymine
True/False
The genetic code for the conversion of mRNA codons to proteins has redundancy. ✔Correct
Answer--true
True/False
DNA replication in eukaryotes is sped up by multiple origins of replication. ✔Correct Answer--True
During mRNA maturation what is the name of the part of the mRNA that is removed? ✔Correct
Answer--intron
True/False
Replication of DNA is semi-conservative. ✔Correct Answer--true
True/False
Strands of the backbone of DNA are parallel? ✔Correct Answer--false
How many hydrogen bonds are there between an A and its paired nucleotide? ✔Correct Answer--2
, Which enzyme is used first to permit DNA polymerase III to begin replicating the 3' strand?
a. Conservative replication
b. Parental strand
c. Primase
d. RNA
e. Mutation rate ✔Correct Answer--c. Primase
Which strand is produced more rapidly?
a. Okazaki fragment
b. Lagging strand
c. Leading strand
d. 3'
e. 5' ✔Correct Answer--c. Leading strand
RNA synthesis, also called RNA transcription occurs in three phases. List them from beginning to end
in order. ✔Correct Answer--initiation, elongation, termination
Assume that you have a eukaryotic cell with three chromosomes within it. How many 5' ends would
there be? ✔Correct Answer--gap1: 6
gap2: 12
List one type of post-translational modification. ✔Correct Answer--proteolysis, glycosylation,
phosphorylation
For DNA Polymerase III to work which of these components has to act first?
a. Conservative replication
b. Newly replicated strand
c. Primase
d. RNA
e. Mutation rate ✔Correct Answer--c. Primase
During DNA replication in the lagging strand there is production of this component?
a. Okazaki fragment
b. mRNA
c. tRNA
d. proteins
e. none of the above ✔Correct Answer--a. Okazaki fragment
There are two types of protein synthesis in eukaryotic cells. These two types can be distinguished
because the polyribosome is either _____or ______. ✔Correct Answer--Free; membrane-bound
Draw the sugar in DNA and label the carbons as discussed in the lecture. Then circle the carbon that
is different in RNA. ✔Correct Answer--2'
In the ribosome, what is the name of the bond that links one amino acid to the next? ✔Correct
Answer--peptide bond
True/False
Uridine is a nucleotide in DNA. ✔Correct Answer--False
Answers| Actual Complete Exam |Already Graded A+
(Just Released)
In eukaryotic cells the start codon for protein synthesis is ______. ✔Correct Answer--AUG
True/False
The DNA polymerase that replicates the parental strand of DNA reads the parental DNA from 5' to 3"
and makes a new DNA strand from 3' to 5'. ✔Correct Answer--false
Which sugar is present in RNA? ✔Correct Answer--ribose
True/False
During DNA replication (mutation) is greatly reduced by enzymes that proof read the newly
replicated DNA. ✔Correct Answer--true
How many "stop" codons exist? ✔Correct Answer--3
In the ribosome, what pairs with the codon? ✔Correct Answer--anticodon
List the two basic categories of nitrogenous bases in nucleic acids. ✔Correct Answer--purines and
pyrimidines
Which enzyme unwraps the double helix?
a. Helicase
b. DNA polymerase III
c. DNA polymerase I
d. Nucleosome
e. DNA ligase ✔Correct Answer--a. helicase
In DNA, what does the nucleotide labeled as A pair with? ✔Correct Answer--Thymine
True/False
The genetic code for the conversion of mRNA codons to proteins has redundancy. ✔Correct
Answer--true
True/False
DNA replication in eukaryotes is sped up by multiple origins of replication. ✔Correct Answer--True
During mRNA maturation what is the name of the part of the mRNA that is removed? ✔Correct
Answer--intron
True/False
Replication of DNA is semi-conservative. ✔Correct Answer--true
True/False
Strands of the backbone of DNA are parallel? ✔Correct Answer--false
How many hydrogen bonds are there between an A and its paired nucleotide? ✔Correct Answer--2
, Which enzyme is used first to permit DNA polymerase III to begin replicating the 3' strand?
a. Conservative replication
b. Parental strand
c. Primase
d. RNA
e. Mutation rate ✔Correct Answer--c. Primase
Which strand is produced more rapidly?
a. Okazaki fragment
b. Lagging strand
c. Leading strand
d. 3'
e. 5' ✔Correct Answer--c. Leading strand
RNA synthesis, also called RNA transcription occurs in three phases. List them from beginning to end
in order. ✔Correct Answer--initiation, elongation, termination
Assume that you have a eukaryotic cell with three chromosomes within it. How many 5' ends would
there be? ✔Correct Answer--gap1: 6
gap2: 12
List one type of post-translational modification. ✔Correct Answer--proteolysis, glycosylation,
phosphorylation
For DNA Polymerase III to work which of these components has to act first?
a. Conservative replication
b. Newly replicated strand
c. Primase
d. RNA
e. Mutation rate ✔Correct Answer--c. Primase
During DNA replication in the lagging strand there is production of this component?
a. Okazaki fragment
b. mRNA
c. tRNA
d. proteins
e. none of the above ✔Correct Answer--a. Okazaki fragment
There are two types of protein synthesis in eukaryotic cells. These two types can be distinguished
because the polyribosome is either _____or ______. ✔Correct Answer--Free; membrane-bound
Draw the sugar in DNA and label the carbons as discussed in the lecture. Then circle the carbon that
is different in RNA. ✔Correct Answer--2'
In the ribosome, what is the name of the bond that links one amino acid to the next? ✔Correct
Answer--peptide bond
True/False
Uridine is a nucleotide in DNA. ✔Correct Answer--False
