Question 1

Of all the different codons that exist, three of them

Accepted Answer

A)  ​are involved in mutations. 
B)  ​do not specify a particular amino acid. 
C)  ​cannot be copied. 
D)  do not specify a particular amino acid and are signals to begin translation. 
E)  ​do not specify a particular amino acid and are signals to terminate translation. 
A)  ​are involved in mutations. 
B)  ​do not specify a particular amino acid. 
C)  ​cannot be copied. 
D)  do not specify a particular amino acid and are signals to begin translation. 
E)  ​do not specify a particular amino acid and are signals to terminate translation.

Question 2

What stage of translation occurs when ribosomal subunits and tRNAs converge on mRNA?

Accepted Answer

A)  ​initiation 
B)  ​elongation 
C)  ​termination 
D)  ​peptide bond formation 
E)  ​elongation and peptide bond formation 
A)  ​initiation 
B)  ​elongation 
C)  ​termination 
D)  ​peptide bond formation 
E)  ​elongation and peptide bond formation

Question 3

Mutations are

Accepted Answer

A)  ​random. 
B)  ​beneficial. 
C)  ​always lethal. 
D)  ​always heritable. 
E)  ​largely predictable. 
A)  ​random. 
B)  ​beneficial. 
C)  ​always lethal. 
D)  ​always heritable. 
E)  ​largely predictable.

Question 4

You will need a genetic code table to answer the following. The following statement refer to the five RNA codons listed below; match them appropriately:​
-A single mutation involving the second letter of codon AUA could convert it to this codon.

Accepted Answer

A) ​AUG 
B) ​UAA 
C) ​UUU 
D) ​UUA 
E) ​AAA 
A) ​AUG 
B) ​UAA 
C) ​UUU 
D) ​UUA 
E) ​AAA

Question 5

Ribosomal subunits

Accepted Answer

A)  ​come together in threes to form functional units. 
B)  ​are composed of mRNA and structural proteins. 
C)  ​are synthesized in the cytoplasm. 
D)  ​converge with tRNA when mRNA is to be translated. 
E)  ​are transcribed from the complementary strand of DNA that is used for tRNA transcription. 
A)  ​come together in threes to form functional units. 
B)  ​are composed of mRNA and structural proteins. 
C)  ​are synthesized in the cytoplasm. 
D)  ​converge with tRNA when mRNA is to be translated. 
E)  ​are transcribed from the complementary strand of DNA that is used for tRNA transcription.

Question 6

Choose the best matching element.​
-polysome

Accepted Answer

A) ​results in a hairless appearance of the sphynx cat 
B) ​RNA-directed process involving polypeptide chains 
C) ​sites at which RNA polymerases can bind and initiate transcription 
D) ​binds to small subunit platform of a ribosome 
E) ​guided and catalyzed by RNA polymerases
F)​polypeptide chain elongation proceeds independently at each body in this cluster
G)​adds nucleotides to the end of a growing RNA
H)​a tRNA triplet opposite a codon
I)​a set of three nucleotides 
A) ​results in a hairless appearance of the sphynx cat 
B) ​RNA-directed process involving polypeptide chains 
C) ​sites at which RNA polymerases can bind and initiate transcription 
D) ​binds to small subunit platform of a ribosome 
E) ​guided and catalyzed by RNA polymerases
F)​polypeptide chain elongation proceeds independently at each body in this cluster
G)​adds nucleotides to the end of a growing RNA
H)​a tRNA triplet opposite a codon
I)​a set of three nucleotides

Question 7

Before messenger RNA fully matures,

Accepted Answer

A)  ​all exons are deleted and removed. 
B)  ​a poly-A tail and modified guanine "cap" are added. 
C)  ​anticodons are assembled. 
D)  ​the transfer RNA transfers the messenger RNA to the ribosome. 
E)  ​the single RNA strand duplicates itself in much the same way as DNA. 
A)  ​all exons are deleted and removed. 
B)  ​a poly-A tail and modified guanine "cap" are added. 
C)  ​anticodons are assembled. 
D)  ​the transfer RNA transfers the messenger RNA to the ribosome. 
E)  ​the single RNA strand duplicates itself in much the same way as DNA.

Question 8

There are how many different kinds of amino acids?

Accepted Answer

A)  ​3 
B)  ​6 
C)  ​12 
D)  ​20 
E)  ​28 
A)  ​3 
B)  ​6 
C)  ​12 
D)  ​20 
E)  ​28

Question 9

A base-pair substitution may alter a protein by changing an amino acid or by introducing a(n) _____________________.

Accepted Answer

​premature

Question 10

Anticodons pair with

Accepted Answer

A)  ​codons on DNA 
B)  ​codons on mRNA. 
C)  ​codons on tRNA 
D)  ​codons on rRNA 
E)  ​messenger RNA and ribosomal RNA. 
A)  ​codons on DNA 
B)  ​codons on mRNA. 
C)  ​codons on tRNA 
D)  ​codons on rRNA 
E)  ​messenger RNA and ribosomal RNA.

Question 11

____ carries protein-assembly instructions from the nucleus to the cytoplasm.

Accepted Answer

A)  ​Template DNA 
B)  ​Messenger RNA 
C)  ​Transfer RNA 
D)  ​Ribosomal RNA 
E)  ​Total RNA 
A)  ​Template DNA 
B)  ​Messenger RNA 
C)  ​Transfer RNA 
D)  ​Ribosomal RNA 
E)  ​Total RNA

Question 12

Figure 9.7
​
The following question refer to the codon table above.  
-If the DNA nucleotides read ATG-CGT-GAC, the amino acid sequence of the resulting polypeptide would be

Accepted Answer

A)  ​tyrosine - alanine - leucine. 
B)  ​methionine - arginine - asparagine. 
C)  ​histidine - glycine - proline. 
D)  ​serine - lysine - glycine. 
E)  ​serine - lysine - isoleucine. 
A)  ​tyrosine - alanine - leucine. 
B)  ​methionine - arginine - asparagine. 
C)  ​histidine - glycine - proline. 
D)  ​serine - lysine - glycine. 
E)  ​serine - lysine - isoleucine.

Question 13

There are how many different kinds of RNA codons?

Accepted Answer

A)  ​3 
B)  ​72 
C)  ​28 
D)  ​64 
E)  ​120 
A)  ​3 
B)  ​72 
C)  ​28 
D)  ​64 
E)  ​120

Question 14

The genetic code is made up of codons consisting of how many nucleotides?

Accepted Answer

A)  ​two 
B)  ​three 
C)  ​five 
D)  ​six 
E)  ​nine 
A)  ​two 
B)  ​three 
C)  ​five 
D)  ​six 
E)  ​nine

Question 15

A segment of DNA that specifies a sequence of amino acids in a polypeptide is called a(n)

Accepted Answer

A)  ​codon. 
B)  ​intron. 
C)  ​messenger. 
D)  ​gene. 
E)  ​enzyme. 
A)  ​codon. 
B)  ​intron. 
C)  ​messenger. 
D)  ​gene. 
E)  ​enzyme.

Question 16

Figure 9.11
  
-A gene mutation

Accepted Answer

A)  ​is a temporary change in the nucleotide sequence of DNA. 
B)  ​may be caused by environmental agents. 
C)  ​always arises spontaneously. 
D)  ​occurs only in eukaryotes. 
E)  ​is always damaging to the organism. 
A)  ​is a temporary change in the nucleotide sequence of DNA. 
B)  ​may be caused by environmental agents. 
C)  ​always arises spontaneously. 
D)  ​occurs only in eukaryotes. 
E)  ​is always damaging to the organism.

Question 17

Each tRNA has a(n) __________ that base-pairs with a codon, and each binds to the amino acid specified by the codon.

Accepted Answer

The answer of Each tRNA has a(n) __________ that base-pairs...

Question 18

Choose the best matching element.​
-transcription

Accepted Answer

A) ​results in a hairless appearance of the sphynx cat 
B) ​RNA-directed process involving polypeptide chains 
C) ​sites at which RNA polymerases can bind and initiate transcription 
D) ​binds to small subunit platform of a ribosome 
E) ​guided and catalyzed by RNA polymerases
F)​polypeptide chain elongation proceeds independently at each body in this cluster
G)​adds nucleotides to the end of a growing RNA
H)​a tRNA triplet opposite a codon
I)​a set of three nucleotides 
A) ​results in a hairless appearance of the sphynx cat 
B) ​RNA-directed process involving polypeptide chains 
C) ​sites at which RNA polymerases can bind and initiate transcription 
D) ​binds to small subunit platform of a ribosome 
E) ​guided and catalyzed by RNA polymerases
F)​polypeptide chain elongation proceeds independently at each body in this cluster
G)​adds nucleotides to the end of a growing RNA
H)​a tRNA triplet opposite a codon
I)​a set of three nucleotides

Question 19

If the DNA sequence isATG-CGT, the mRNA codons are

Accepted Answer

A)  ​AUG-CGU. 
B)  ​ATG-CGT. 
C)  ​UAC-GCA. 
D)  ​UAG-CGU. 
E)  ​GUA-CGU. 
A)  ​AUG-CGU. 
B)  ​ATG-CGT. 
C)  ​UAC-GCA. 
D)  ​UAG-CGU. 
E)  ​GUA-CGU.

Question 20

In transcription, RNA polymerase binds to a(n) _____________________ sequence near a gene, and then assembles a strand of RNA.

Accepted Answer

The answer of In transcription, RNA polymerase binds to a(n)...

Exam 9: From Dna to Protein

Of all the different codons that exist, three of them

What stage of translation occurs when ribosomal subunits and tRNAs converge on mRNA?

Mutations are

You will need a genetic code table to answer the following. The following statement refer to the five RNA codons listed below; match them appropriately:​ -A single mutation involving the second letter of codon AUA could convert it to this codon.

Ribosomal subunits

Choose the best matching element.​ -polysome

Before messenger RNA fully matures,

There are how many different kinds of amino acids?

A base-pair substitution may alter a protein by changing an amino acid or by introducing a(n) _____________________.

Anticodons pair with

____ carries protein-assembly instructions from the nucleus to the cytoplasm.

Figure 9.7 ​ The following question refer to the codon table above. -If the DNA nucleotides read ATG-CGT-GAC, the amino acid sequence of the resulting polypeptide would be

There are how many different kinds of RNA codons?

The genetic code is made up of codons consisting of how many nucleotides?

A segment of DNA that specifies a sequence of amino acids in a polypeptide is called a(n)

Figure 9.11 -A gene mutation

Each tRNA has a(n) __________ that base-pairs with a codon, and each binds to the amino acid specified by the codon.

Choose the best matching element.​ -transcription

If the DNA sequence isATG-CGT, the mRNA codons are

In transcription, RNA polymerase binds to a(n) _____________________ sequence near a gene, and then assembles a strand of RNA.

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

Ground Rules of Metabolism

Where It Starts - Photosynthesis

How Cells Release Chemical Energy

Dna Structure and Function

Gene Control

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

Organizating Information About Species

Lifes Origin and Early Evolution

Viruses - Bacteria - and Archaea

Protists - the Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution - the Invertibrates

Animal Evolution - the Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Filters

You will need a genetic code table to answer the following. The following statement refer to the five RNA codons listed below; match them appropriately: -A single mutation involving the second letter of codon AUA could convert it to this codon.

Choose the best matching element. -polysome

Figure 9.7 The following question refer to the codon table above. -If the DNA nucleotides read ATG-CGT-GAC, the amino acid sequence of the resulting polypeptide would be

Choose the best matching element. -transcription