What is the correct sequence in translation?

a
tRNA attaches to start codon, ribosome attaches to mRNA in P site, new tRNA enters on A site, peptide chain moves to old tRNA in P site, old tRNA moves to E and new tRNA to P.

b
tRNA attaches to start codon, ribosome attaches to mRNA in P site, new tRNA enters on A site, peptide chain moves to new tRNA, old tRNA moves to E and new tRNA to P.

c
tRNA attaches to start codon, ribosome attaches to mRNA in A site, new tRNA enters on P site, peptide chain moves to new tRNA, old tRNA moves to E and new tRNA to A.

d
tRNA attaches continuously to mRNA without the need of a ribosome.

Proteins are:

a
the direct translation of a single gene

b
in most cases, the results of post-translation control

c
first transcribed from DNA by an operon

d
transcription factors

Which of the following statements is false?

a
In the lytic cycle, new phage are produced and released into the environment.

b
In the lysogenic cycle, phage DNA is incorporated into the host genome.

c
An environmental stressor can cause the phage to initiate the lysogenic cycle.

d
Cell lysis only occurs in the lytic cycle.

Which of the following transfer RNA binding sites is found on the ribosome?

a
A, P, E

b
A, G, T,

c
A, C, U

d
U, U, G

Operons are:

a
Present in eukaryotic cells

b
In each chromosome of all cells

c
present in prokaryiotic cells

d
a way to control translation from mRNA to proteins

Which of the following statements about virus structure is true?

a
All viruses are encased in a viral membrane.

b
The capsomere is made up of small protein subunits called capsids.

c
DNA is the genetic material in all viruses.

d
Glycoproteins help the virus attach to the host cell.

Prokaryotic cells lack a nucleus. Therefore, the genes in prokaryotic cells are: (choose the most complete answer).

a
all expressed, all of the time

b
transcribed and translated almost simultaneously

c
transcriptionally controlled because translation begins before transcription ends.

d
b and c are both true

How many subunits does the ribosome contain?

a
One.

b
Two.

c
Three.

d
Four.

Which of the following statements about virus structure is true?

a
All viruses are encased in a viral membrane.

b
The capsomere is made up of small protein subunits called capsids.

c
DNA is the genetic material in all viruses.

d
Glycoproteins help the virus attach to the host cell.

Look at sub-figure A. What is the structure in black made of?

a
Glycoproteins.

b
RNA

c
Capsomeres.

d
DNA.

Which type of RNA carries the code for the sequence of amino acids in a protein?

a
Messenger RNA.

b
Ribosomal RNA.

c
Transfer RNA.

d
Courier RNA.

Look at sub-figure C. What does the image correspond to?

a
This is a tRNA

b
This is an mRNA

c
This is a primary (raw) transcript.

d
This is DNA.

The process of converting DNA to RNA is called:

a
Transcription.

b
Translation.

c
Transduction.

d
Induction.

Which one is exclusive of transcription in eukaryots?

a
RNA polymerase

b
Transcription factors

c
Initiation, elongation, termination

d
topisomerases

If this is an operon then, which statement is correct?

a
The boxes with numbers are introns

b
The boxes with numbers are exons

c
The region next to the promotor is called the operator

d
This belongs to an eukaryotic organism.

What is RNA splicing?

a
When a mRNA is broken into pieces

b
When mRNA is transformed to DNA with the help of reverse transcriptase

c
When mRNA contains different sets of exons

d
When introns are in the final mRNA

What will result from the binding of a transcription factor to an enhancer region?

a
decreased transcription of an adjacent gene

b
increased transcription of a distant gene

c
alteration of the translation of an adjacent gene

d
initiation of the recruitment of RNA polymerase

Which of the following statements about virus structure is true?

a
They are hexagonal

b
They are composed of capsomeres

c
The reverse transcriptase is in all of them

d
They don't have glycoproteins

If glucose is absent, but so is lactose, the lac operon will be _______.

a
activated.

b
repressed.

c
activated, but only partially,

d
mutated.

Why can’t the bases sequence TGCCGAACTTGAA be translated directly?

a
There are too many bases for a codon.

b
This is a segment of DNA, not RNA.

c
This is a segment of RNA, not DNA.

d
This is a segment of mRNA.

Which type of gene expression does not exist?

a
epigenetic

b
histone modification

c
regulation by transcription factors

d
electrical field stimulation

What are epigenetic modifications?

a
the addition of reversible changes to histone proteins and DNA

b
the removal of nucleosomes from the DNA

c
the addition of more nucleosomes to the DNA

d
mutation of the DNA sequence

Each transfer RNA has a sequence complimentary to the codon known as the:

a
anticodon

b
retrocodon

c
negacodon

d
nullcodon

Post-translational control refers to:

a
regulation of gene expression after transcription

b
regulation of gene expression after translation

c
control of epigenetic activation

d
period between transcription and translation

Question

What is the correct sequence in translation?

a		tRNA attaches to start codon, ribosome attaches to mRNA in P site, new tRNA enters on A site, peptide chain moves to old tRNA in P site, old tRNA moves to E and new tRNA to P.
b		tRNA attaches to start codon, ribosome attaches to mRNA in P site, new tRNA enters on A site, peptide chain moves to new tRNA, old tRNA moves to E and new tRNA to P.
c		tRNA attaches to start codon, ribosome attaches to mRNA in A site, new tRNA enters on P site, peptide chain moves to new tRNA, old tRNA moves to E and new tRNA to A.
d		tRNA attaches continuously to mRNA without the need of a ribosome.

Proteins are:

a		the direct translation of a single gene
b		in most cases, the results of post-translation control
c		first transcribed from DNA by an operon
d		transcription factors

Which of the following statements is false?

a		In the lytic cycle, new phage are produced and released into the environment.
b		In the lysogenic cycle, phage DNA is incorporated into the host genome.
c		An environmental stressor can cause the phage to initiate the lysogenic cycle.
d		Cell lysis only occurs in the lytic cycle.

Which of the following transfer RNA binding sites is found on the ribosome?

a		A, P, E
b		A, G, T,
c		A, C, U
d		U, U, G

Operons are:

a		Present in eukaryotic cells
b		In each chromosome of all cells
c		present in prokaryiotic cells
d		a way to control translation from mRNA to proteins

Which of the following statements about virus structure is true?

a		All viruses are encased in a viral membrane.
b		The capsomere is made up of small protein subunits called capsids.
c		DNA is the genetic material in all viruses.
d		Glycoproteins help the virus attach to the host cell.

Prokaryotic cells lack a nucleus. Therefore, the genes in prokaryotic cells are: (choose the most complete answer).

a		all expressed, all of the time
b		transcribed and translated almost simultaneously
c		transcriptionally controlled because translation begins before transcription ends.
d		b and c are both true

How many subunits does the ribosome contain?

a		One.
b		Two.
c		Three.
d		Four.

Which of the following statements about virus structure is true?

a		All viruses are encased in a viral membrane.
b		The capsomere is made up of small protein subunits called capsids.
c		DNA is the genetic material in all viruses.
d		Glycoproteins help the virus attach to the host cell.

Look at sub-figure A. What is the structure in black made of?

a		Glycoproteins.
b		RNA
c		Capsomeres.
d		DNA.

Which type of RNA carries the code for the sequence of amino acids in a protein?

a		Messenger RNA.
b		Ribosomal RNA.
c		Transfer RNA.
d		Courier RNA.

Look at sub-figure C. What does the image correspond to?

a		This is a tRNA
b		This is an mRNA
c		This is a primary (raw) transcript.
d		This is DNA.

The process of converting DNA to RNA is called:

a		Transcription.
b		Translation.
c		Transduction.
d		Induction.

Which one is exclusive of transcription in eukaryots?

a		RNA polymerase
b		Transcription factors
c		Initiation, elongation, termination
d		topisomerases

If this is an operon then, which statement is correct?

a		The boxes with numbers are introns
b		The boxes with numbers are exons
c		The region next to the promotor is called the operator
d		This belongs to an eukaryotic organism.

What is RNA splicing?

a		When a mRNA is broken into pieces
b		When mRNA is transformed to DNA with the help of reverse transcriptase
c		When mRNA contains different sets of exons
d		When introns are in the final mRNA

What will result from the binding of a transcription factor to an enhancer region?

a		decreased transcription of an adjacent gene
b		increased transcription of a distant gene
c		alteration of the translation of an adjacent gene
d		initiation of the recruitment of RNA polymerase

Which of the following statements about virus structure is true?

a		They are hexagonal
b		They are composed of capsomeres
c		The reverse transcriptase is in all of them
d		They don't have glycoproteins

If glucose is absent, but so is lactose, the lac operon will be _______.

a		activated.
b		repressed.
c		activated, but only partially,
d		mutated.

Why can’t the bases sequence TGCCGAACTTGAA be translated directly?

a		There are too many bases for a codon.
b		This is a segment of DNA, not RNA.
c		This is a segment of RNA, not DNA.
d		This is a segment of mRNA.

Which type of gene expression does not exist?

a		epigenetic
b		histone modification
c		regulation by transcription factors
d		electrical field stimulation

What are epigenetic modifications?

a		the addition of reversible changes to histone proteins and DNA
b		the removal of nucleosomes from the DNA
c		the addition of more nucleosomes to the DNA
d		mutation of the DNA sequence

Each transfer RNA has a sequence complimentary to the codon known as the:

a		anticodon
b		retrocodon
c		negacodon
d		nullcodon

Post-translational control refers to:

a		regulation of gene expression after transcription
b		regulation of gene expression after translation
c		control of epigenetic activation
d		period between transcription and translation

Accepted Answer

1.
 
Translation is the process of synthesis of protein from a transcribed mRNA.
 
 
Translation…