Question 1

When genes are changed by mutations,this will never change the function of the proteins they encode.

Accepted Answer

A) True 
 B)False

Question 2

What distinguishes amino acids from one another?

Accepted Answer

A)   different amino groups
B)   different carboxyl groups
C)   different R groups
D)   All of these distinguish amino acids from one another.
E)   None of these distinguish amino acids from one another.F) C) and E)
G) B) and D)

Question 3

An anticodon is

Accepted Answer

A)   located on miRNA.
B)   a group of nucleotides in mRNA that encodes the information for a specific amino acid in a protein.
C)   a group of nucleotides in a tRNA molecule.
D)   a chemical link formed between amino acids.
E)   the enzyme that carries out transcription.F) A) and B)
G) A) and C)

Question 4

RNA polymerase makes mRNA from a DNA template.

Accepted Answer

A) True 
 B)False

Question 5

What treatments are available for patients with sickle-cell anemia? What is the first drug treatment that has been approved? What are some of the negatives of this drug? Why do you think that the use of this drug needs to be monitored by a doctor? If you suffered from sickle-cell anemia,would you want to take this drug? Explain your answers.

Accepted Answer

Treatments for patients with sickle-cell...

Question 6

How might a change in DNA nucleotide sequence of a gene cause a genetic disorder?

Accepted Answer

A)   A change in one base pair in a gene can change a crucial amino acid in a protein.
B)   A mutation can change the three-dimensional shape of a protein and cause defective protein folding.
C)   A mutational change can cause a protein's subunits not to couple with each other properly.
D)   The change can lead to production of a shortened, non-functional protein.
E)   All of these are possible ways that changes in DNA could lead to genetic disorders.F) B) and C)
G) A) and E)

Question 7

Match the following descriptions with the appropriate letter.
 
-these are different for different amino acids

Accepted Answer

The answer of Match the following descriptions with the appropriate...

Question 8

The signal on the mRNA that causes translation to stop is the

Accepted Answer

A)   start codon.
B)   termination tRNA.
C)   stop codon.
D)   start methionine.
E)   termination sequence.F) A) and B)
G) A) and C)

Question 9

MATCHING
Match the term to the description.
-mRNA

Accepted Answer

A)  Binds to an amino acid
B)  Consists of two subunits
C)  Carries codons
D)  Ends translation
E)  Translation begins hereF) Forms between two amino acidsG) B) and C)
H) A) and E)

Question 10

Gene regulation can be achieved by all of the following EXCEPT

Accepted Answer

A)   the use of RNA interference.
B)   controlling access to the promoter regions of genes.
C)   chemically modifying histones.
D)   chemically modifying DNA
E)   controlling the rate of DNA replication.F) B) and E)
G) A) and E)

Question 11

MATCHING
Match the term to the description.
-Ribosome

Accepted Answer

A)  Binds to an amino acid
B)  Consists of two subunits
C)  Carries codons
D)  Ends translation
E)  Translation begins hereF) Forms between two amino acidsG) B) and D)
H) A) and B)

Question 12

The region on the DNA where the RNA polymerase initially binds is called the

Accepted Answer

A)   termination sequence.
B)   promoter.
C)   stop codon.
D)   start codon.
E)   message.F) All of the above
G) C) and D)

Question 13

RNA polymerase is the enzyme that

Accepted Answer

A)   makes protein from a DNA template.
B)   makes pre-mRNA from a DNA template.
C)   transports RNA from the nucleus to the cytoplasm.
D)   makes DNA from a RNA template.
E)   replicates DNA.F) D) and E)
G) A) and E)

Question 14

PROBLEM
Consider a stretch of DNA (a hypothetical gene) that has the sequence TACGATAGTACCAGGATT on the strand that will be transcribed.
-Now,our hypothetical gene has undergone a mutation.The mutant sequence is TACGATACTACCAGGATT.Transcribe the mutant sequence into mRNA,and determine the amino acid sequence of the resulting polypeptide chain.Determine if the nucleotide modification produced a different amino acid sequence n the protein.What do you think the consequence of this mutation would be in terms of protein function?

Accepted Answer

The mRNA would read AUGCUAUGAUUGGUCCUAA....

Question 15

All of the following are functions of proteins EXCEPT

Accepted Answer

A)   provide structure.
B)   receptors.
C)   carrier molecules.
D)   chemical messengers.
E)   storage of genetic information.F) A) and C)
G) B) and E)

Question 16

A codon is

Accepted Answer

A)   located on miRNA.
B)   a group of nucleotides in mRNA that encodes the information for a specific amino acid in a protein.
C)   a group of nucleotides in a tRNA molecule .
D)   a chemical link formed between amino acids.
E)   the enzyme that carries out transcription.F) B) and E)
G) A) and B)

Question 17

Match the following descriptions with the appropriate letter.
 
-carboxyl group

Accepted Answer

The answer of Match the following descriptions with the appropriate...

Question 18

Which of the following answers best describes the flow of information when a gene directs the synthesis of proteins?

Accepted Answer

A)   DNA→mRNA→tRNA
B)   RNA→DNA→RNA→protein
C)   DNA→mRNA→protein
D)   Amino acid→mRNA→DNA
E)   Lipids→mRNA→tRNAF) C) and E)
G) B) and D)

Question 19

Changing how tightly the DNA is wound does not affect gene expression.

Accepted Answer

A) True 
 B)False

Question 20

In cystic fibrosis,the most common mutation produces a non-functional protein that controls the flow of chloride ions into and out of the cell.

Accepted Answer

A) True 
 B)False

Exam 5: Gene Expression and Gene Regulation

Match the following descriptions with the appropriate letter. -carboxyl group

Correct Answer
verified

The region on the DNA where the RNA polymerase initially binds is called the

Correct Answer
verified

When genes are changed by mutations,this will never change the function of the proteins they encode.

Correct Answer
verified

In cystic fibrosis,the most common mutation produces a non-functional protein that controls the flow of chloride ions into and out of the cell.

Correct Answer
verified

Correct Answer
verified
The mRNA would read AUGCUAUGAUUGGUCCUAA....
View Answer

An anticodon is

Correct Answer
verified

A codon is

Correct Answer
verified

The signal on the mRNA that causes translation to stop is the

Correct Answer
verified

MATCHING Match the term to the description. -mRNA

Correct Answer
verified

RNA polymerase is the enzyme that

Correct Answer
verified

Match the following descriptions with the appropriate letter. -these are different for different amino acids

Correct Answer
verified

MATCHING Match the term to the description. -Ribosome

Correct Answer
verified

RNA polymerase makes mRNA from a DNA template.

Correct Answer
verified

What distinguishes amino acids from one another?

Correct Answer
verified

Changing how tightly the DNA is wound does not affect gene expression.

Correct Answer
verified

Correct Answer
verified
Treatments for patients with sickle-cell...
View Answer

All of the following are functions of proteins EXCEPT

Correct Answer
verified

Gene regulation can be achieved by all of the following EXCEPT

Correct Answer
verified

Which of the following answers best describes the flow of information when a gene directs the synthesis of proteins?

Correct Answer
verified

How might a change in DNA nucleotide sequence of a gene cause a genetic disorder?

Correct Answer
verified

Exam 5: Gene Expression and Gene Regulation

Match the following descriptions with the appropriate letter. -carboxyl group

Correct AnswerverifiedShow Answer

The region on the DNA where the RNA polymerase initially binds is called the

Correct AnswerverifiedShow Answer

When genes are changed by mutations,this will never change the function of the proteins they encode.

Correct AnswerverifiedShow Answer

In cystic fibrosis,the most common mutation produces a non-functional protein that controls the flow of chloride ions into and out of the cell.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedThe mRNA would read AUGCUAUGAUUGGUCCUAA....View AnswerShow Answer

An anticodon is

Correct AnswerverifiedShow Answer

A codon is

Correct AnswerverifiedShow Answer

The signal on the mRNA that causes translation to stop is the

Correct AnswerverifiedShow Answer

MATCHING Match the term to the description. -mRNA

Correct AnswerverifiedShow Answer

RNA polymerase is the enzyme that

Correct AnswerverifiedShow Answer

Match the following descriptions with the appropriate letter. -these are different for different amino acids

Correct AnswerverifiedShow Answer

MATCHING Match the term to the description. -Ribosome

Correct AnswerverifiedShow Answer

RNA polymerase makes mRNA from a DNA template.

Correct AnswerverifiedShow Answer

What distinguishes amino acids from one another?

Correct AnswerverifiedShow Answer

Changing how tightly the DNA is wound does not affect gene expression.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedTreatments for patients with sickle-cell...View AnswerShow Answer

All of the following are functions of proteins EXCEPT

Correct AnswerverifiedShow Answer

Gene regulation can be achieved by all of the following EXCEPT

Correct AnswerverifiedShow Answer

Which of the following answers best describes the flow of information when a gene directs the synthesis of proteins?

Correct AnswerverifiedShow Answer

How might a change in DNA nucleotide sequence of a gene cause a genetic disorder?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The mRNA would read AUGCUAUGAUUGGUCCUAA....
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Treatments for patients with sickle-cell...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified