Question 1

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

Question 2

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 3

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. 
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.

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

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 6

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 here
F)Forms between two amino acids 
A) Binds to an amino acid 
B) Consists of two subunits 
C) Carries codons 
D) Ends translation 
E) Translation begins here
F)Forms between two amino acids

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

RNA polymerase makes mRNA from a DNA template.

Accepted Answer

A) True 
 B)False

Question 9

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 here
F)Forms between two amino acids 
A) Binds to an amino acid 
B) Consists of two subunits 
C) Carries codons 
D) Ends translation 
E) Translation begins here
F)Forms between two amino acids

Question 10

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. 
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.

Question 11

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. 
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.

Question 12

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

Question 13

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. 
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.

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

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. 
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.

Question 16

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. 
A)  termination sequence. 
B)  promoter. 
C)  stop codon. 
D)  start codon. 
E)  message.

Question 17

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

Question 18

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

Question 19

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. 
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.

Question 20

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

Accepted Answer

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

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

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

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

MATCHING Match the term to the description. -mRNA

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

RNA polymerase makes mRNA from a DNA template.

MATCHING Match the term to the description. -Ribosome

A codon is

What distinguishes amino acids from one another?

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.

Gene regulation can be achieved by all of the following EXCEPT

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

RNA polymerase is the enzyme that

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

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

All of the following are functions of proteins EXCEPT

An anticodon is

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

Sex and Development

Assisted Reproductive Technology

Changes in Chromosome Number

How Genes Are Transmitted From Generation to Generation

Changes in DNA: Mutations and Epigenetics

Biotechnology

Genetic Testing and Prenatal Diagnosis

DNA Forensics

Genomics

Inheritance of Complex Traits

Cancer and the Cell Cycle

Behavior

Immunogenetics

Genetics and Populations

Human Evolution

A Different World: The Past, Present, and Future of Human Genetics

Biology Basics 1-Cells and Cell Structure

Biology Basics 2-DNA and RNA

Biology Basics 3-Genes, Populations, and the Environment

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Exam 5: Gene Expression and Gene Regulation

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

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

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

MATCHING Match the term to the description. -mRNA

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

RNA polymerase makes mRNA from a DNA template.

MATCHING Match the term to the description. -Ribosome

A codon is

What distinguishes amino acids from one another?

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.

Gene regulation can be achieved by all of the following EXCEPT

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

RNA polymerase is the enzyme that

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

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

All of the following are functions of proteins EXCEPT

An anticodon is

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

Sex and Development

Assisted Reproductive Technology

Changes in Chromosome Number

How Genes Are Transmitted From Generation to Generation

Changes in DNA: Mutations and Epigenetics

Biotechnology

Genetic Testing and Prenatal Diagnosis

DNA Forensics

Genomics

Inheritance of Complex Traits

Cancer and the Cell Cycle

Behavior

Immunogenetics

Genetics and Populations

Human Evolution

A Different World: The Past, Present, and Future of Human Genetics

Biology Basics 1-Cells and Cell Structure

Biology Basics 2-DNA and RNA

Biology Basics 3-Genes, Populations, and the Environment

Filters