Question 1

After processing of pre-mRNAs is complete, some regions are retained in finished mRNAs. What are these regions called?

Accepted Answer

A)  exons 
B)  snRNPs 
C)  UTRs 
D)  domains

Question 2

For each item or event, indicate the process it is associated with.
-ribosome

Accepted Answer

A) processing of pre-mRNA 
B) translation 
C) sorting proteins in cells 
D) transcription

Question 3

Where in the sequence of a eukaryotic gene would one find the TATA box?

Accepted Answer

A)  in the coding region 
B)  at the transcription start point 
C)  in the terminator 
D)  in the promoter

Question 4

Match each type of RNA with its description.
-rRNA

Accepted Answer

A) RNA transcribed from a protein-coding gene that is ready to be used in translation 
B) RNA that binds with proteins to make a particle that is involved in removal of introns and joining of exons 
C) RNA that forms part of the ribosome 
D) RNA with an anticodon and a linkage site for a specific amino acid 
E) RNA in eukaryotes that must be processed in the nucleus before it is ready to be translated

Question 5

Match each type of RNA with its description.
-pre-mRNA

Accepted Answer

A) RNA transcribed from a protein-coding gene that is ready to be used in translation 
B) RNA that binds with proteins to make a particle that is involved in removal of introns and joining of exons 
C) RNA that forms part of the ribosome 
D) RNA with an anticodon and a linkage site for a specific amino acid 
E) RNA in eukaryotes that must be processed in the nucleus before it is ready to be translated

Question 6

For each item or event, indicate the process it is associated with.
-ER membrane

Accepted Answer

A) processing of pre-mRNA 
B) translation 
C) sorting proteins in cells 
D) transcription

Question 7

What does the degeneracy of the genetic code refer to?

Accepted Answer

A)  the fact that the code varies considerably between different organisms 
B)  the fact that the code is commaless 
C)  the fact that the code is universal 
D)  the fact that the code has multiple codons for some amino acids

Question 8

Which molecule is involved in transcription?

Accepted Answer

A)  tRNA 
B)  DNA, 5'-3' strand 
C)  DNA, 3'-5' strand 
D)  DNA polymerase

Question 9

Transcription Diagram 
-In the transcription diagram, what is the name of item E?

Accepted Answer

A)  DNA double helix 
B)  template DNA strand 
C)  RNA-DNA hybrid 
D)  complementary DNA strand

Question 10

In which complex does the process of removing introns from mRNA and putting the remaining exons together occur?

Accepted Answer

A)  in the anticodon 
B)  in the polysome 
C)  in the spliceosome 
D)  in the ribosome

Question 11

The studies of alkaptonuria provided the first evidence of a connection between genes and metabolism. Who conducted these studies?

Accepted Answer

A)  Archibald Garrod 
B)  Watson and Crick 
C)  Frederick Griffith 
D)  Beadle and Tatum

Question 12

At the start of translation, where is the initiator tRNA base paired with the start codon?

Accepted Answer

A)  at the A site in the ribosome 
B)  first at the A site in the ribosome, and then the E site in the ribosome 
C)  first at the A site in the ribosome, and then the P site in the ribosome 
D)  at the P site in the ribosome

Question 13

For each item or event, indicate the process it is associated with.
-signal peptidase

Accepted Answer

A) processing of pre-mRNA 
B) translation 
C) sorting proteins in cells 
D) transcription

Question 14

Which type of transcription are the proteins called transcription factors involved in?

Accepted Answer

A)  elongation 
B)  initiation 
C)  termination 
D)  stabilization

Question 15

Proteins are assembled from the instructions found in which molecule?

Accepted Answer

A)  mRNA 
B)  ribosome 
C)  tRNA 
D)  DNA

Question 16

Which codon/amino acid pairing represents the universal start codon in eukaryotes?

Accepted Answer

A)  UUU-phenylalanine 
B)  UGA-proline 
C)  ACG-threonine 
D)  AUG-methionine

Question 17

Where does the process of translation of nuclear protein-coding genes in eukaryotic cells occur?

Accepted Answer

A)  in the nucleolus 
B)  in the nucleus 
C)  in the Golgi apparatus 
D)  in the cytoplasm

Question 18

What triggers the termination of transcription in prokaryotes?

Accepted Answer

A)  a stop codon 
B)  an enzyme 
C)  an RNA hairpin loop 
D)  a poly-A sequence

Question 19

Genetic Code Table 
-Suppose that an mRNA molecule is made complementary to the DNA sequence 3'-CTTACATGGCATCC-5'. In the genetic code table, the incorporation of which amino acid in the polypeptide is directed by the third codon (counting the start codon as the first codon)?

Accepted Answer

A)  serine 
B)  histidine 
C)  threonine 
D)  cysteine

Question 20

Match each term with its definition.
-terminator

Accepted Answer

A) indicates the end for transcription 
B) first codon read in translation 
C) amino-acid coding sequence retained in finished mRNA 
D) indicates the end for translation 
E) control sequence ahead of a transcription unit

Exam 12: Gene Structure Expression, and Mutation

After processing of pre-mRNAs is complete, some regions are retained in finished mRNAs. What are these regions called?

For each item or event, indicate the process it is associated with. -ribosome

Where in the sequence of a eukaryotic gene would one find the TATA box?

Match each type of RNA with its description. -rRNA

Match each type of RNA with its description. -pre-mRNA

For each item or event, indicate the process it is associated with. -ER membrane

What does the degeneracy of the genetic code refer to?

Which molecule is involved in transcription?

Transcription Diagram -In the transcription diagram, what is the name of item E?

In which complex does the process of removing introns from mRNA and putting the remaining exons together occur?

The studies of alkaptonuria provided the first evidence of a connection between genes and metabolism. Who conducted these studies?

At the start of translation, where is the initiator tRNA base paired with the start codon?

For each item or event, indicate the process it is associated with. -signal peptidase

Which type of transcription are the proteins called transcription factors involved in?

Proteins are assembled from the instructions found in which molecule?

Which codon/amino acid pairing represents the universal start codon in eukaryotes?

Where does the process of translation of nuclear protein-coding genes in eukaryotic cells occur?

What triggers the termination of transcription in prokaryotes?

Genetic Code Table -Suppose that an mRNA molecule is made complementary to the DNA sequence 3'-CTTACATGGCATCC-5'. In the genetic code table, the incorporation of which amino acid in the polypeptide is directed by the third codon (counting the start codon as the first codon) ?

Match each term with its definition. -terminator