Question 1

Which of the following is not a level of regulation of gene expression?

Accepted Answer

A)   Pretranscriptional
B)   Transcriptional
C)   Posttranscriptional
D)   Prereplicational
E)   TranslationalF) None of the above
G) B) and D)

Question 2

The bases in DNA are complementary.A always binds with

Accepted Answer

A)  A.
B)  C.
C)  G.
D)  T.
E)  U.F) B) and D)
G) B) and C)

Question 3

Which of the following is not a type of mRNA processing?

Accepted Answer

A)   adding a cap
B)   cleaving off the methionine
C)   adding a tail
D)   removing the introns
E)   splicingF) C) and D)
G) None of the above

Question 4

Which of the following is a benefit gained from learning how to sequence DNA?

Accepted Answer

A)   identification of faulty genes
B)   development of treatments for diseases
C)   modification of crops to increase yields
D)   understanding of our evolutionary history
E)   all of these are benefits gained from DNA sequencingF) C) and D)
G) A) and B)

Question 5

How similar are our genomes to those of a mouse?

Accepted Answer

A)   1%
B)   10%
C)   35%
D)   85%
E)   99%F) None of the above
G) B) and E)

Question 6

Which of the following would be an example of pretranscriptional control?

Accepted Answer

A)   The chromosomes must decondense.
B)   The mRNA is degraded before translation can occur.
C)   The mRNA is processed before it leaves the nucleus.
D)   The life expectancy of the mRNA molecules vary.
E)   The polypeptide product is folded to form its functional conformation.F) A) and D)
G) A) and C)

Question 7

Which of the following is not a potential function of proteins?

Accepted Answer

A)   enzymes to catalyze chemical reactions
B)   neurotransmitters to aid the nervous system
C)   antibodies for the immune system
D)   storage form for genetic information
E)   hormones to change cellular activityF) A) and E)
G) All of the above

Question 8

The three-base sequence in a mRNA molecule is called a(n)

Accepted Answer

A)   codon.
B)   anticodon.
C)   initiator.
D)   mutation.
E)   transposon.F) C) and D)
G) B) and E)

Question 9

Mitochondria also contain DNA.

Accepted Answer

A) True 
 B)False

Question 10

What is the role of the enzyme ligase in DNA replication?

Accepted Answer

A)   It unzips the double-stranded DNA.
B)   It seals any breaks in the sugar-phosphate backbone.
C)   It breaks the hydrogen bonds that hold the two strands of the DNA together.
D)   It matches new bases to the old strand by complementary base pairing.
E)   It folds the DNA into a coiled structure.F) A) and C)
G) A) and E)

Question 11

Which of the following is the primary goal of bioinformatics?

Accepted Answer

A)   to find significant patterns in the information gained from DNA sequencing and proteomics
B)   to input DNA and protein sequences into a computer
C)   to model the three-dimensional shape of cellular proteins
D)   to obtain the sequence of all the noncoding regions of the DNA
E)   to insert genetic material into human cells for the treatment of a disorderF) C) and E)
G) A) and B)

Question 12

How many genes did researchers think the human genome contained? How many did it contain?

Accepted Answer

A)   3 billion; 80,000
B)   1 million; 1 million
C)   25,000; 80,000
D)   80,000; 23,000
E)   125 million; 1 millionF) B) and C)
G) C) and D)

Question 13

How many different amino acids are found in proteins?

Accepted Answer

A)   5
B)   10
C)   20
D)   50
E)   over 100F) None of the above
G) B) and C)

Question 14

As the RNA is being made,it is exported from the nucleus to the cytoplasm for translation.

Accepted Answer

A) True 
 B)False

Question 15

How does modern day sequencing detect dyes on the nucleotides?

Accepted Answer

A)   radioactivity
B)   dye terminator chemicals
C)   DNA breakage
D)   laser
E)   by eyeF) A) and D)
G) D) and E)

Question 16

More than 50% of the entire human genome codes for functional proteins.

Accepted Answer

A) True 
 B)False

Question 17

What is the goal of functional genomics?

Accepted Answer

A)   to determine all of the human genome sequence
B)   to determine the genome sequence of other organisms useful to humans
C)   to determine the purpose of our genes and how they form a human being
D)   to determine how all the proteins within the cell interact
E)   to carry out gene therapy for human diseasesF) A) and B)
G) C) and D)

Question 18

CRISPR was first discovered in fungi,where it acts as a form of immune defense against invading bacteria.

Accepted Answer

A) True 
 B)False

Question 19

What are the three things DNA must be able to do in order to serve as the genetic material?

Accepted Answer

In order to serve as the genet...

Question 20

Describe the similarities and differences between DNA and RNA.

Accepted Answer

DNA/RNA similarities: both are nucleic a...

Exam 22: Dna Biology and Technology

The three-base sequence in a mRNA molecule is called a(n)

Correct AnswerverifiedShow Answer

How does modern day sequencing detect dyes on the nucleotides?

Correct AnswerverifiedShow Answer

What are the three things DNA must be able to do in order to serve as the genetic material?

Correct AnswerverifiedIn order to serve as the genet...View AnswerShow Answer

Which of the following would be an example of pretranscriptional control?

Correct AnswerverifiedShow Answer

Which of the following is a benefit gained from learning how to sequence DNA?

Correct AnswerverifiedShow Answer

Describe the similarities and differences between DNA and RNA.

Correct AnswerverifiedDNA/RNA similarities: both are nucleic a...View AnswerShow Answer

Which of the following is not a level of regulation of gene expression?

Correct AnswerverifiedShow Answer

CRISPR was first discovered in fungi,where it acts as a form of immune defense against invading bacteria.

Correct AnswerverifiedShow Answer

Which of the following is not a type of mRNA processing?

Correct AnswerverifiedShow Answer

How many genes did researchers think the human genome contained? How many did it contain?

Correct AnswerverifiedShow Answer

How many different amino acids are found in proteins?

Correct AnswerverifiedShow Answer

The bases in DNA are complementary.A always binds with

Correct AnswerverifiedShow Answer

What is the role of the enzyme ligase in DNA replication?

Correct AnswerverifiedShow Answer

Which of the following is not a potential function of proteins?

Correct AnswerverifiedShow Answer

As the RNA is being made,it is exported from the nucleus to the cytoplasm for translation.

Correct AnswerverifiedShow Answer

What is the goal of functional genomics?

Correct AnswerverifiedShow Answer

Which of the following is the primary goal of bioinformatics?

Correct AnswerverifiedShow Answer

How similar are our genomes to those of a mouse?

Correct AnswerverifiedShow Answer

Mitochondria also contain DNA.

Correct AnswerverifiedShow Answer

More than 50% of the entire human genome codes for functional proteins.

Correct AnswerverifiedShow Answer

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In order to serve as the genet...
View Answer

Correct Answer
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DNA/RNA similarities: both are nucleic a...
View Answer

Correct Answer
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Correct Answer
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