Pomarico Exam 4 Bio 1201 Questions With
Complete Solutions
1. Which is true of SARS-CoV2?
it is a DNA virus
it is an RNA virus
it is a retrovirus (like HIV)
it is a rod-like virus (like ebola)
it is a bacterophage Correct Answers it is an RNA
virus
1. Which of the following happens during the
lysogenic phase?
1. integration into the host genome
2. transcription and translation of viral genes
3. replication of viral genome
4. assembly of new viral particles
5. all of the above Correct Answers 1. integration
into the host genome
- others answers are more closely related to the
lytic phase
1st step in DNA condensation is Correct Answers
DNA winding around histone protein
A codon consists of _____ bases and specifies which
_____ will be inserted into the polypeptide chain.
1. three ... nucleotide
,2. two ... nucleotide
3. four ... amino acid
4. four ... fatty acid
5. three ... amino acid Correct Answers 5. three ...
amino acid
-Three nucleotide bases make up a codon and
specify which amino acid comes next in the
sequence.
A codon is ACG, what is the anti-codon?
5' CGU 3'
5' UGC 3'
5' GCA 3'
5' TGC 3'
None of these is correct Correct Answers 5' CGU
3'
A lack of which molecule would result in the cell's
inability to "turn off" genes?
1. ubiquitin
2. inducer
3. promoter
4. operon
5. corepressor Correct Answers 5. corepressor
A promotor + an operator sequence + one or more
genes=
A coding sequence
An inducer
,An operon
An allelon
A genetic cassette Correct Answers An operon
A purple pea flower has which of the following
genotypes?
1. PP
2. PP or Pp
3. pp
4. pp or Pp
5. PP, pp, or Pp Correct Answers PP (homozygous)
or Pp (heterozygous)
Accuracy in the translation of mRNA into the
primary structure of a polypeptide depends on
specificity in the
1. shape of the A and P sites of ribosomes.
2. binding of ribosomes to mRNA.
3. attachment of amino acids to tRNAs.
4. bonding of the anticodon to the codon.
5. bonding of the anticodon to the codon and the
attachment of amino acids to tRNAs. Correct
Answers 5. bonding of the anticodon to the codon
and the attachment of amino acids to tRNAs.
Acetylation:
a. all of the above
, b. turns on chromatin for transcription
c. turns off mRNAs for translation
d. identifies introns in mRNAs for processing
e. targets proteins for destruction Correct Answers
b. turns on chromatin for transcription
After an RNA molecule is transcribed from a
eukaryotic gene, what are removed and what are
spliced together to produce an mRNA molecule
with a continuous coding sequence?
1. operators ... promoters
2. introns ... exons
3. silencers ... enhancers
4. promoters ... operators
5. exons ... introns Correct Answers 2. introns ...
exons
-Introns, intervening sequences, are removed and
the exons, expressed sequences, are spliced
together.
All of these describe viruses
Which of these killed more
WWII
1982
HIV
WWI
Coronavirus
Ebola Correct Answers WWII
Complete Solutions
1. Which is true of SARS-CoV2?
it is a DNA virus
it is an RNA virus
it is a retrovirus (like HIV)
it is a rod-like virus (like ebola)
it is a bacterophage Correct Answers it is an RNA
virus
1. Which of the following happens during the
lysogenic phase?
1. integration into the host genome
2. transcription and translation of viral genes
3. replication of viral genome
4. assembly of new viral particles
5. all of the above Correct Answers 1. integration
into the host genome
- others answers are more closely related to the
lytic phase
1st step in DNA condensation is Correct Answers
DNA winding around histone protein
A codon consists of _____ bases and specifies which
_____ will be inserted into the polypeptide chain.
1. three ... nucleotide
,2. two ... nucleotide
3. four ... amino acid
4. four ... fatty acid
5. three ... amino acid Correct Answers 5. three ...
amino acid
-Three nucleotide bases make up a codon and
specify which amino acid comes next in the
sequence.
A codon is ACG, what is the anti-codon?
5' CGU 3'
5' UGC 3'
5' GCA 3'
5' TGC 3'
None of these is correct Correct Answers 5' CGU
3'
A lack of which molecule would result in the cell's
inability to "turn off" genes?
1. ubiquitin
2. inducer
3. promoter
4. operon
5. corepressor Correct Answers 5. corepressor
A promotor + an operator sequence + one or more
genes=
A coding sequence
An inducer
,An operon
An allelon
A genetic cassette Correct Answers An operon
A purple pea flower has which of the following
genotypes?
1. PP
2. PP or Pp
3. pp
4. pp or Pp
5. PP, pp, or Pp Correct Answers PP (homozygous)
or Pp (heterozygous)
Accuracy in the translation of mRNA into the
primary structure of a polypeptide depends on
specificity in the
1. shape of the A and P sites of ribosomes.
2. binding of ribosomes to mRNA.
3. attachment of amino acids to tRNAs.
4. bonding of the anticodon to the codon.
5. bonding of the anticodon to the codon and the
attachment of amino acids to tRNAs. Correct
Answers 5. bonding of the anticodon to the codon
and the attachment of amino acids to tRNAs.
Acetylation:
a. all of the above
, b. turns on chromatin for transcription
c. turns off mRNAs for translation
d. identifies introns in mRNAs for processing
e. targets proteins for destruction Correct Answers
b. turns on chromatin for transcription
After an RNA molecule is transcribed from a
eukaryotic gene, what are removed and what are
spliced together to produce an mRNA molecule
with a continuous coding sequence?
1. operators ... promoters
2. introns ... exons
3. silencers ... enhancers
4. promoters ... operators
5. exons ... introns Correct Answers 2. introns ...
exons
-Introns, intervening sequences, are removed and
the exons, expressed sequences, are spliced
together.
All of these describe viruses
Which of these killed more
WWII
1982
HIV
WWI
Coronavirus
Ebola Correct Answers WWII
