ASU BIO 181: EXAM 2
Which strand is produced more rapidly? - CORRECT ANSWER-Leading strand
During DNA replication in the lagging strand there is production of this
component? - CORRECT ANSWER-Okazaki fragment
How many "stop" codons exist? - CORRECT ANSWER-3
The double helix of DNA is wrapped about 1¾ times around which of these
components? - CORRECT ANSWER-Nucleosome
Which enzyme unwraps the double helix? - CORRECT ANSWER-Helicase
In the ribosome, what is the name of the bond that links one amino acid to the
next? - CORRECT ANSWER-peptide bonds
List the two basic categories of nitrogenous bases in nucleic acids. - CORRECT
ANSWER-purine and pyrimidine
In DNA, what does the nucleotide labeled as A pair with? - CORRECT
ANSWER-Thymine
During DNA replication is greatly reduced by enzymes that proof read the newly
replicated DNA. - CORRECT ANSWER-True
How many hydrogen bonds are there between an A and its paired nucleotide? -
CORRECT ANSWER-2
During mRNA maturation what is the name of the part of the mRNA that is
removed? - CORRECT ANSWER-introns
DNA replication in eukaryotes is sped up by multiple origins of replication. -
CORRECT ANSWER-true
, RNA synthesis, also called RNA transcription occurs in three phases. List them
from beginning to end in order. - CORRECT ANSWER-initiation, elongation,
termination
Which nucleotide is different in RNA compared to DNA? - CORRECT
ANSWER-uridine
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
In eukaryotic cells the start codon for protein synthesis is . - CORRECT
ANSWER-Aug
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-
Which sugar is present in RNA? - CORRECT ANSWER-ribose
For DNA Polymerase III to work which of these components has to act first? -
CORRECT ANSWER-Primase
RNA is double stranded. - CORRECT ANSWER-False
In the lagging stand, the DNA is read from the parental DNA's 3' to 5' end. -
CORRECT ANSWER-True
Which enzyme is used first to permit DNA polymerase III to begin replicating the
3' strand? - CORRECT ANSWER-Primase
Strands of the backbone of DNA are parallel? - CORRECT ANSWER-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
Uridine is a nucleotide in DNA. - CORRECT ANSWER-False
Which strand is produced more rapidly? - CORRECT ANSWER-Leading strand
During DNA replication in the lagging strand there is production of this
component? - CORRECT ANSWER-Okazaki fragment
How many "stop" codons exist? - CORRECT ANSWER-3
The double helix of DNA is wrapped about 1¾ times around which of these
components? - CORRECT ANSWER-Nucleosome
Which enzyme unwraps the double helix? - CORRECT ANSWER-Helicase
In the ribosome, what is the name of the bond that links one amino acid to the
next? - CORRECT ANSWER-peptide bonds
List the two basic categories of nitrogenous bases in nucleic acids. - CORRECT
ANSWER-purine and pyrimidine
In DNA, what does the nucleotide labeled as A pair with? - CORRECT
ANSWER-Thymine
During DNA replication is greatly reduced by enzymes that proof read the newly
replicated DNA. - CORRECT ANSWER-True
How many hydrogen bonds are there between an A and its paired nucleotide? -
CORRECT ANSWER-2
During mRNA maturation what is the name of the part of the mRNA that is
removed? - CORRECT ANSWER-introns
DNA replication in eukaryotes is sped up by multiple origins of replication. -
CORRECT ANSWER-true
, RNA synthesis, also called RNA transcription occurs in three phases. List them
from beginning to end in order. - CORRECT ANSWER-initiation, elongation,
termination
Which nucleotide is different in RNA compared to DNA? - CORRECT
ANSWER-uridine
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
In eukaryotic cells the start codon for protein synthesis is . - CORRECT
ANSWER-Aug
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-
Which sugar is present in RNA? - CORRECT ANSWER-ribose
For DNA Polymerase III to work which of these components has to act first? -
CORRECT ANSWER-Primase
RNA is double stranded. - CORRECT ANSWER-False
In the lagging stand, the DNA is read from the parental DNA's 3' to 5' end. -
CORRECT ANSWER-True
Which enzyme is used first to permit DNA polymerase III to begin replicating the
3' strand? - CORRECT ANSWER-Primase
Strands of the backbone of DNA are parallel? - CORRECT ANSWER-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
Uridine is a nucleotide in DNA. - CORRECT ANSWER-False
