Please help to answer all questions precisely (a lot depends upon it!) as well as to the best of your knowledge. No need
Posted: Wed May 18, 2022 1:56 pm
Please help to answer all questions precisely (a lot depends
upon it!) as well as to the best of your knowledge. No need to
explain in detail; as soon as possible please!
1. Like DNA replication, the first major step in transcription
is
a. binding of the transcription factors.
b. elongation
c. the usage of RNA primers.
d. recognition of the promoter sites.
e. unwinding of the double helix.
---------------------------------------------------------
2. Which type of mutation would result if the sequence
GUU-CAU-UUG had a nucleotide substitution that caused UUG to become
UAG?
a. missense
b. silent
c. nonsense
Who first provided convincing evidence for the triplet (codon)
hypothesis?
Beadle and Tatum
Jacob and Monod
Watson
Crick and Brenner Garrod
-
What are the components of ribosomes?
a. 2 sub-units composed of proteins and rRNAs
b. 1 sub-unit composed of proteins and rRNAs
c. 2 sub-units composed of proteins and tRNAs
d. 2 subunits composed of proteins and mRNAs
-----------------------------------------------------------------
What phase of DNA replication involves helicase activity?
termination
elongation
initiation
transcription
synthesis
-
The reading frame is set by
A methionine derivative.
The assembly of initiation factors.
The initiation complex.
The codon AUG.
------------------------------------------------------
What is the corresponding anticodon for the codon CGG?
CGG CCG GCC GCG CCC
----
Which process best describes the process of transcription?
DNA strands open and one strand is copied by mRNA.
DNA strands open and both strands are copied by mRNA.
Ribosomes read the DNA to make copies of tRNA to make
protein.
A DNA strand is read and the sugar is replaced to make it
mRNA.
Translation is a process in which a polypeptide is produced from
mRNA.
--------------------------------------------------------------------
What is the role of tRNA in this process?
It carries a particular amino acid to the correct codon site
It stores genetic information
It provides information to a ribosome
It carries genetic information from DNA
It proofreads the growing polypeptide
When a gene from one organism is inserted into another kind of
organism, it produces the same protein.
Which characteristic of a genetic code makes this important
implication for gene technology possible?
The genetic code is redundant
The genetic code is continuous
The genetic code is universal
The genetic code has initiation and stop codons
The genetic code is unique for every individual
-
Which statement about regulation of gene expression in
prokaryotes is true?
The most common form of regulation of gene expression is at the
level of translation
The most common form of regulation of gene expression is at the
post-transcriptional level
Regulation of gene expression occurs through operons
Regulation of gene expression occurs through alternative
splicing
---------------------------------------------------------------------------
Spliceosomes are responsible for
removing exons
removing introns
attaching intron together
the synthesis of mRNA
the synthesis of peptides
-----------------------------------------
What are the non-coding regions of eukaryotic genes called?
chromatin
repetitive DNA
microsatellite DNA
exons
introns
---------------------
If the original sequence is ACGCGT, which represents a point
mutation?
ACGGGT
TGCCGT
GGGCCC
ACGCGT
ACCCGU
upon it!) as well as to the best of your knowledge. No need to
explain in detail; as soon as possible please!
1. Like DNA replication, the first major step in transcription
is
a. binding of the transcription factors.
b. elongation
c. the usage of RNA primers.
d. recognition of the promoter sites.
e. unwinding of the double helix.
---------------------------------------------------------
2. Which type of mutation would result if the sequence
GUU-CAU-UUG had a nucleotide substitution that caused UUG to become
UAG?
a. missense
b. silent
c. nonsense
Who first provided convincing evidence for the triplet (codon)
hypothesis?
Beadle and Tatum
Jacob and Monod
Watson
Crick and Brenner Garrod
-
What are the components of ribosomes?
a. 2 sub-units composed of proteins and rRNAs
b. 1 sub-unit composed of proteins and rRNAs
c. 2 sub-units composed of proteins and tRNAs
d. 2 subunits composed of proteins and mRNAs
-----------------------------------------------------------------
What phase of DNA replication involves helicase activity?
termination
elongation
initiation
transcription
synthesis
-
The reading frame is set by
A methionine derivative.
The assembly of initiation factors.
The initiation complex.
The codon AUG.
------------------------------------------------------
What is the corresponding anticodon for the codon CGG?
CGG CCG GCC GCG CCC
----
Which process best describes the process of transcription?
DNA strands open and one strand is copied by mRNA.
DNA strands open and both strands are copied by mRNA.
Ribosomes read the DNA to make copies of tRNA to make
protein.
A DNA strand is read and the sugar is replaced to make it
mRNA.
Translation is a process in which a polypeptide is produced from
mRNA.
--------------------------------------------------------------------
What is the role of tRNA in this process?
It carries a particular amino acid to the correct codon site
It stores genetic information
It provides information to a ribosome
It carries genetic information from DNA
It proofreads the growing polypeptide
When a gene from one organism is inserted into another kind of
organism, it produces the same protein.
Which characteristic of a genetic code makes this important
implication for gene technology possible?
The genetic code is redundant
The genetic code is continuous
The genetic code is universal
The genetic code has initiation and stop codons
The genetic code is unique for every individual
-
Which statement about regulation of gene expression in
prokaryotes is true?
The most common form of regulation of gene expression is at the
level of translation
The most common form of regulation of gene expression is at the
post-transcriptional level
Regulation of gene expression occurs through operons
Regulation of gene expression occurs through alternative
splicing
---------------------------------------------------------------------------
Spliceosomes are responsible for
removing exons
removing introns
attaching intron together
the synthesis of mRNA
the synthesis of peptides
-----------------------------------------
What are the non-coding regions of eukaryotic genes called?
chromatin
repetitive DNA
microsatellite DNA
exons
introns
---------------------
If the original sequence is ACGCGT, which represents a point
mutation?
ACGGGT
TGCCGT
GGGCCC
ACGCGT
ACCCGU