Question 1

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

Accepted Answer

A) The chromosomes must decondense. 
B) Transcription factors help initiate transcription. 
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. 
A) The chromosomes must decondense. 
B) Transcription factors help initiate transcription. 
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.

Question 2

Which of the following is the monomer unit of DNA?

Accepted Answer

A) amino acids 
B) fatty acids 
C) nucleotides 
D) carbohydrate rings 
E) steroid rings 
A) amino acids 
B) fatty acids 
C) nucleotides 
D) carbohydrate rings 
E) steroid rings

Question 3

The "r" in "rRNA" stands for reticulum RNA because this type of RNA is associated with the endoplasmic reticulum.

Accepted Answer

A) True 
 B)False

Question 4

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. 
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.

Question 5

Organisms that have had a foreign gene inserted into them are called analytical products.

Accepted Answer

A) True 
 B)False

Question 6

Exons in mRNAs are excised and left in the nucleus.

Accepted Answer

A) True 
 B)False

Question 7

An individual has a genetic disorder in which their cell is not forming the correct protein structure for the cell membrane to allow entry of a particular ion.Doctors have determined that in order to help cure this person they need to alter the shape of the protein.Which type of regulation of gene expression would have the greatest chance of success?

Accepted Answer

A) posttranslational control 
B) posttranscriptional control 
C) transcriptional control 
D) translational control 
E) pretranscriptional control 
A) posttranslational control 
B) posttranscriptional control 
C) transcriptional control 
D) translational control 
E) pretranscriptional control

Question 8

Which of the following is a coding RNA?

Accepted Answer

A) small RNA 
B) tRNA 
C) rRNA 
D) mRNA 
E) large RNA 
A) small RNA 
B) tRNA 
C) rRNA 
D) mRNA 
E) large RNA

Question 9

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) splicing 
A) adding a cap 
B) cleaving off the methionine 
C) adding a tail 
D) removing the introns 
E) splicing

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

The sugar in DNA is deoxyribose while the sugar in RNA is ribose.

Accepted Answer

A) True 
 B)False

Question 12

How many codons are there for leucine?

Accepted Answer

A) two 
B) three 
C) four 
D) five 
E) six 
A) two 
B) three 
C) four 
D) five 
E) six

Question 13

How similar are our genomes to those of a mouse?

Accepted Answer

A) 1% 
B) 10% 
C) 35% 
D) 85% 
E) 99% 
A) 1% 
B) 10% 
C) 35% 
D) 85% 
E) 99%

Question 14

Which of the following is not a type of small RNA?

Accepted Answer

A) snoRNAs 
B) tRNA 
C) snRNAs 
D) miRNAs 
E) siRNAs 
A) snoRNAs 
B) tRNA 
C) snRNAs 
D) miRNAs 
E) siRNAs

Question 15

Which of the following is not studied in the field of proteomics?

Accepted Answer

A) protein-protein interactions 
B) protein concentration in a cell 
C) which genes give rise to which proteins 
D) cellular location of particular proteins 
E) chemical modifications of proteins 
A) protein-protein interactions 
B) protein concentration in a cell 
C) which genes give rise to which proteins 
D) cellular location of particular proteins 
E) chemical modifications of proteins

Question 16

In the RNA sequence CAAUGACCAG,what will be the first amino acid incorporated?

Accepted Answer

A) alanine 
B) glutamine 
C) methionine 
D) valine 
E) glycine 
A) alanine 
B) glutamine 
C) methionine 
D) valine 
E) glycine

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 diseases 
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 diseases

Question 18

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

Accepted Answer

A) Pretranscriptional 
B) Transcriptional 
C) Posttranscriptional 
D) Pretranslational 
E) Translational 
A) Pretranscriptional 
B) Transcriptional 
C) Posttranscriptional 
D) Pretranslational 
E) Translational

Question 19

What enzyme is responsible for transcribing RNA?

Accepted Answer

A) helicase 
B) DNA polymerase 
C) RNA polymerase 
D) ligase 
E) protease 
A) helicase 
B) DNA polymerase 
C) RNA polymerase 
D) ligase 
E) protease

Question 20

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 activity 
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 activity

Exam 22: DNA Biology and Technology

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

Which of the following is the monomer unit of DNA?

The "r" in "rRNA" stands for reticulum RNA because this type of RNA is associated with the endoplasmic reticulum.

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

Organisms that have had a foreign gene inserted into them are called analytical products.

Exons in mRNAs are excised and left in the nucleus.

Which of the following is a coding RNA?

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

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

The sugar in DNA is deoxyribose while the sugar in RNA is ribose.

How many codons are there for leucine?

How similar are our genomes to those of a mouse?

Which of the following is not a type of small RNA?

Which of the following is not studied in the field of proteomics?

In the RNA sequence CAAUGACCAG,what will be the first amino acid incorporated?

What is the goal of functional genomics?

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

What enzyme is responsible for transcribing RNA?

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

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