Question 1

Mammalian oocytes have recently been shown to produce siRNAs.What are they called?

Accepted Answer

A) exo-siRNAs 
B) endo-siRNAs 
C) endoRNAs 
D) mamma-siRNAs 
E) oo-siRNAs 
A) exo-siRNAs 
B) endo-siRNAs 
C) endoRNAs 
D) mamma-siRNAs 
E) oo-siRNAs

Question 2

Sequences of DNA that are similar,seemingly conserved and seen in association with genes in roughly the same location from gene to gene in bacteria are called ________.They are generally the most common version of such a conserved DNA sequence,but some variation in the sequence can occur from one gene to another.

Accepted Answer

A) familiar sequences 
B) conserved sequences 
C) consensus sequences 
D) avatars 
E) consensons 
A) familiar sequences 
B) conserved sequences 
C) consensus sequences 
D) avatars 
E) consensons

Question 3

In mammalian cells,radiolabeled methyl groups appear first in what size RNA molecule that is a precursor to rRNA?

Accepted Answer

A) 45S RNA 
B) 28S RNA 
C) 18S RNA 
D) 5)8S RNA 
E) 65S RNA 
A) 45S RNA 
B) 28S RNA 
C) 18S RNA 
D) 5)8S RNA 
E) 65S RNA

Question 4

Who was the first to report that certain rare inherited diseases were caused by the absence of specific enzymes?

Accepted Answer

A) Charles Darwin 
B) Archibald Garrod 
C) George Beadle 
D) Vernon Ingram 
E) James Watson 
A) Charles Darwin 
B) Archibald Garrod 
C) George Beadle 
D) Vernon Ingram 
E) James Watson

Question 5

A larger S value for an RNA specifically indicates that the RNA __________.

Accepted Answer

A) migrates more rapidly through a field of force during centrifugation 
B) migrates less rapidly through a field of force during centrifugation 
C) migrates more rapidly through a field of force during gel filtration 
D) migrates more rapidly through a field of force during SDS polyacrylamide gel electrophoresis 
E) migrates less rapidly through a field of force during SDS polyacrylamide gel electrophoresis 
A) migrates more rapidly through a field of force during centrifugation 
B) migrates less rapidly through a field of force during centrifugation 
C) migrates more rapidly through a field of force during gel filtration 
D) migrates more rapidly through a field of force during SDS polyacrylamide gel electrophoresis 
E) migrates less rapidly through a field of force during SDS polyacrylamide gel electrophoresis

Question 6

The greatest similarities among codons that specify the same amino acid occur _________.

Accepted Answer

A) in the first two nucleotides of the triplet 
B) in the last two nucleotides of the triplet 
C) in the first and third nucleotides of the triplet 
D) in the third nucleotide of the triplet 
E) in the middle nucleotide of the triplet 
A) in the first two nucleotides of the triplet 
B) in the last two nucleotides of the triplet 
C) in the first and third nucleotides of the triplet 
D) in the third nucleotide of the triplet 
E) in the middle nucleotide of the triplet

Question 7

A cluster of genes coding for tRNAs is often referred to as ______.

Accepted Answer

A) tDNA 
B) transferase 
C) rDNA 
D) t clusters 
E) tDNase 
A) tDNA 
B) transferase 
C) rDNA 
D) t clusters 
E) tDNase

Question 8

The promoter for tRNA genes (tDNA)is located ________.

Accepted Answer

A) at the gene's 3' end 
B) within the coding section of the gene rather than in the 5' flank 
C) at the 5' end of the gene 
D) far downstream of the gene 
E) far upstream of the gene 
A) at the gene's 3' end 
B) within the coding section of the gene rather than in the 5' flank 
C) at the 5' end of the gene 
D) far downstream of the gene 
E) far upstream of the gene

Question 9

What evidence shows that the genetic code is not overlapping?

Accepted Answer

A) Mutant proteins whose genes experience a change in only one nucleotide,have a corresponding change in 3 consecutive amino acids. 
B) Mutant proteins whose genes experience a change in only one nucleotide,have a corresponding change in only 1 amino acid. 
C) Mutant proteins are greatly increased in length relative to the gene coding for them. 
D) Mutant proteins are greatly decreased in length relative to the gene coding for them. 
E) Mutant proteins whose genes experience a change in only one nucleotide,have a corresponding change in 6 consecutive amino acids. 
A) Mutant proteins whose genes experience a change in only one nucleotide,have a corresponding change in 3 consecutive amino acids. 
B) Mutant proteins whose genes experience a change in only one nucleotide,have a corresponding change in only 1 amino acid. 
C) Mutant proteins are greatly increased in length relative to the gene coding for them. 
D) Mutant proteins are greatly decreased in length relative to the gene coding for them. 
E) Mutant proteins whose genes experience a change in only one nucleotide,have a corresponding change in 6 consecutive amino acids.

Question 10

You are studying a particular tRNA.When charged with its amino acid,it is able to participate in protein synthesis.When interacting with the ribosome,it always enters the ribosome and associates with the P site.What amino acid is attached to the tRNA?

Accepted Answer

Methionine or more c

Question 11

The 3' end of most eukaryotic mRNAs contains a ______,while the 5' end has a _________.

Accepted Answer

A) poly(
A) tail,methylated guanosine cap 
B) poly(U)tail,methylated guanosine cap 
C) methylated guanosine cap,poly(
A) tail 
D) poly(
A) tail,sulfonated guanosine cap 
E) methylated guanosine cap,poly(U)tail 
A) poly(
A) tail,methylated guanosine cap 
B) poly(U)tail,methylated guanosine cap 
C) methylated guanosine cap,poly(
A) tail 
D) poly(
A) tail,sulfonated guanosine cap 
E) methylated guanosine cap,poly(U)tail

Question 12

The enzyme in eukaryotes that is responsible for the synthesis of RNA from a DNA template is called _______.

Accepted Answer

A) DNA-dependent DNA polymerase 
B) DNA-dependent RNA polymerase 
C) RNA-dependent RNA polymerase 
D) RNA-dependent DNA polymerase 
E) ribonuclease 
A) DNA-dependent DNA polymerase 
B) DNA-dependent RNA polymerase 
C) RNA-dependent RNA polymerase 
D) RNA-dependent DNA polymerase 
E) ribonuclease

Question 13

An alcaptonuric lacks the enzyme that oxidizes what metabolite?

Accepted Answer

A) phenylalanine 
B) tyrosine 
C) homogentisic acid 
D) asparagine 
E) pantothenic acid 
A) phenylalanine 
B) tyrosine 
C) homogentisic acid 
D) asparagine 
E) pantothenic acid

Question 14

Another name for protein synthesis is _________.

Accepted Answer

A) transcription 
B) transition 
C) transubstantiation 
D) translation 
E) transition state 
A) transcription 
B) transition 
C) transubstantiation 
D) translation 
E) transition state

Question 15

Once bound to the promoter,RNA polymerase ________.

Accepted Answer

A) breaks the DNA chain in the start site region 
B) melts the two DNA strands in the start site region 
C) degrades the two DNA strands in the start site region 
D) melts the two DNA strands in the termination site region 
E) chemically alters the DNA template 
A) breaks the DNA chain in the start site region 
B) melts the two DNA strands in the start site region 
C) degrades the two DNA strands in the start site region 
D) melts the two DNA strands in the termination site region 
E) chemically alters the DNA template

Question 16

Which of the phenomena below is responsible for the ability of one gene to code for more than one polypeptide?

Accepted Answer

A) transcription 
B) alternative splicing 
C) transposition 
D) hybridization 
E) exon shuffling 
A) transcription 
B) alternative splicing 
C) transposition 
D) hybridization 
E) exon shuffling

Question 17

Why are general transcription factors (GTFs)referred to as "general?"

Accepted Answer

A) The same transcription factors are required for the accurate initiation of transcription of a diverse array of genes in a wide variety of different organisms. 
B) The same transcription factors are required for the accurate initiation of translation of a diverse array of genes in a wide variety of different organisms. 
C) The same transcription factors are required for the accurate termination of transcription of a diverse array of genes in a wide variety of different organisms. 
D) The same transcription factors are required for the accurate termination of translation of a diverse array of genes in a wide variety of different organisms. 
E) They are called "general" because they outrank "major." 
A) The same transcription factors are required for the accurate initiation of transcription of a diverse array of genes in a wide variety of different organisms. 
B) The same transcription factors are required for the accurate initiation of translation of a diverse array of genes in a wide variety of different organisms. 
C) The same transcription factors are required for the accurate termination of transcription of a diverse array of genes in a wide variety of different organisms. 
D) The same transcription factors are required for the accurate termination of translation of a diverse array of genes in a wide variety of different organisms. 
E) They are called "general" because they outrank "major."

Question 18

As life was first evolving,what molecule is thought to have performed double duty as the genetic material and performing catalysis of chemical reactions?

Accepted Answer

A) RNA 
B) proteins 
C) polypeptides 
D) DNA 
E) both proteins and polypeptides 
A) RNA 
B) proteins 
C) polypeptides 
D) DNA 
E) both proteins and polypeptides

Question 19

What features set pre-rRNAs apart from other RNA transcripts?

Accepted Answer

A) pseudouridine residues and thymidine residues 
B) thymidine residues and methylated nucleotides 
C) pseudouridine residues and methylated nucleotides 
D) pseudouridines and pseudocytosines 
E) methylated nucleotides and pseudocytosines 
A) pseudouridine residues and thymidine residues 
B) thymidine residues and methylated nucleotides 
C) pseudouridine residues and methylated nucleotides 
D) pseudouridines and pseudocytosines 
E) methylated nucleotides and pseudocytosines

Question 20

What is the name of the enzyme that cleaves dsRNA into the small,double-stranded fragments known as small-interfering RNAs (siRNAs)?

Accepted Answer

A) riboendonuclease 
B) Dicer ribonuclease 
C) deoxyribonuclease 
D) RNA helicase 
E) reverse transcriptase 
A) riboendonuclease 
B) Dicer ribonuclease 
C) deoxyribonuclease 
D) RNA helicase 
E) reverse transcriptase

Mammalian oocytes have recently been shown to produce siRNAs.What are they called?

In mammalian cells,radiolabeled methyl groups appear first in what size RNA molecule that is a precursor to rRNA?

Who was the first to report that certain rare inherited diseases were caused by the absence of specific enzymes?

A larger S value for an RNA specifically indicates that the RNA __________.

The greatest similarities among codons that specify the same amino acid occur _________.

A cluster of genes coding for tRNAs is often referred to as ______.

The promoter for tRNA genes (tDNA)is located ________.

What evidence shows that the genetic code is not overlapping?

You are studying a particular tRNA.When charged with its amino acid,it is able to participate in protein synthesis.When interacting with the ribosome,it always enters the ribosome and associates with the P site.What amino acid is attached to the tRNA?

The 3' end of most eukaryotic mRNAs contains a ,while the 5' end has a ___.

The enzyme in eukaryotes that is responsible for the synthesis of RNA from a DNA template is called _______.

An alcaptonuric lacks the enzyme that oxidizes what metabolite?

Another name for protein synthesis is _________.

Once bound to the promoter,RNA polymerase ________.

Which of the phenomena below is responsible for the ability of one gene to code for more than one polypeptide?

Why are general transcription factors (GTFs)referred to as "general?"

As life was first evolving,what molecule is thought to have performed double duty as the genetic material and performing catalysis of chemical reactions?

What features set pre-rRNAs apart from other RNA transcripts?

What is the name of the enzyme that cleaves dsRNA into the small,double-stranded fragments known as small-interfering RNAs (siRNAs)?

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics,enzymes and Metabolism

The Structure and Function of the Plasma Membrane

Aerobic Respiration and the Mitochondrion

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

The Nature of the Gene and the Genome

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters

Exam 11: Gene Expression: From Transcription to Translation

Mammalian oocytes have recently been shown to produce siRNAs.What are they called?

In mammalian cells,radiolabeled methyl groups appear first in what size RNA molecule that is a precursor to rRNA?

Who was the first to report that certain rare inherited diseases were caused by the absence of specific enzymes?

A larger S value for an RNA specifically indicates that the RNA __________.

The greatest similarities among codons that specify the same amino acid occur _________.

A cluster of genes coding for tRNAs is often referred to as ______.

The promoter for tRNA genes (tDNA)is located ________.

What evidence shows that the genetic code is not overlapping?

You are studying a particular tRNA.When charged with its amino acid,it is able to participate in protein synthesis.When interacting with the ribosome,it always enters the ribosome and associates with the P site.What amino acid is attached to the tRNA?

The 3' end of most eukaryotic mRNAs contains a ______,while the 5' end has a _________.

The enzyme in eukaryotes that is responsible for the synthesis of RNA from a DNA template is called _______.

An alcaptonuric lacks the enzyme that oxidizes what metabolite?

Another name for protein synthesis is _________.

Once bound to the promoter,RNA polymerase ________.

Which of the phenomena below is responsible for the ability of one gene to code for more than one polypeptide?

Why are general transcription factors (GTFs)referred to as "general?"

As life was first evolving,what molecule is thought to have performed double duty as the genetic material and performing catalysis of chemical reactions?

What features set pre-rRNAs apart from other RNA transcripts?

What is the name of the enzyme that cleaves dsRNA into the small,double-stranded fragments known as small-interfering RNAs (siRNAs)?

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics,enzymes and Metabolism

The Structure and Function of the Plasma Membrane

Aerobic Respiration and the Mitochondrion

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

The Nature of the Gene and the Genome

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters

The 3' end of most eukaryotic mRNAs contains a ,while the 5' end has a ___.