Question 1

What is probably the single most important distinction between prokaryotes and eukaryotes?

Accepted Answer

A) the existence of the Golgi complex 
B) the separation of the cell's genetic material from the surrounding cytoplasm 
C) the existence of ribosomes 
D) the centrioles 
E) the lysosomes and peroxisomes 
A) the existence of the Golgi complex 
B) the separation of the cell's genetic material from the surrounding cytoplasm 
C) the existence of ribosomes 
D) the centrioles 
E) the lysosomes and peroxisomes

Question 2

The HLH motif is often preceded by a stretch of highly ______ amino acids whose ______ charged side chains contact DNA and determine the transcription factor's sequence specificity.

Accepted Answer

A) basic,positively 
B) basic,negatively 
C) acidic,negatively 
D) acidic,positively 
E) hydrophobic,neutral 
A) basic,positively 
B) basic,negatively 
C) acidic,negatively 
D) acidic,positively 
E) hydrophobic,neutral

Question 3

Transcription factors bound at the enhancer stimulate the initiation of transcription at the core promoter through the action of intermediaries called _____.

Accepted Answer

A) corepressors 
B) cotranscriptors 
C) coactivators 
D) preinitiators 
E) costimulators 
A) corepressors 
B) cotranscriptors 
C) coactivators 
D) preinitiators 
E) costimulators

Question 4

An unusual stretch of repeated sequences at the tips of a DNA molecule forming a cap at each end of the chromosome is called a ________.

Accepted Answer

A) telomere 
B) chromomere 
C) centromere 
D) telophase 
E) karyomere 
A) telomere 
B) chromomere 
C) centromere 
D) telophase 
E) karyomere

Question 5

Which of the following words or phrases does not accurately describe the contents of the nucleus?

Accepted Answer

A) viscous 
B) amorphous 
C) undistinguished morphology 
D) crystalline 
E) highly extended nucleoprotein 
A) viscous 
B) amorphous 
C) undistinguished morphology 
D) crystalline 
E) highly extended nucleoprotein

Question 6

What strategy in transcription factor research allows the simultaneous monitoring of all sites in the genome that carry out a particular activity with the goal of identifying all of the sites bound by a given transcription factor under a given set of physiological conditions?

Accepted Answer

A) deletion mapping 
B) DNA footprinting 
C) genome-wide location analysis 
D) FISH 
E) scanning electron microscopy 
A) deletion mapping 
B) DNA footprinting 
C) genome-wide location analysis 
D) FISH 
E) scanning electron microscopy

Question 7

How do allolactose and lactose differ?

Accepted Answer

A) They are composed of different sugars. 
B) Allolactose has a negative charge,while lactose has a positive charge. 
C) The type of linkage holding the two constituent sugars together differs between lactose and allolactose. 
D) The order of the sugars is reversed in the two molecules. 
E) The constituent sugars are both upside down in lactose and right-side-up in allolactose. 
A) They are composed of different sugars. 
B) Allolactose has a negative charge,while lactose has a positive charge. 
C) The type of linkage holding the two constituent sugars together differs between lactose and allolactose. 
D) The order of the sugars is reversed in the two molecules. 
E) The constituent sugars are both upside down in lactose and right-side-up in allolactose.

Question 8

Which type of molecule binds at the core promoter sites in association with RNA polymerase?

Accepted Answer

A) general transcription factors 
B) sequence-specific transcription factors 
C) elongation factors 
D) initiation factors 
E) termination factors 
A) general transcription factors 
B) sequence-specific transcription factors 
C) elongation factors 
D) initiation factors 
E) termination factors

What is probably the single most important distinction between prokaryotes and eukaryotes?

The HLH motif is often preceded by a stretch of highly amino acids whose charged side chains contact DNA and determine the transcription factor's sequence specificity.

Transcription factors bound at the enhancer stimulate the initiation of transcription at the core promoter through the action of intermediaries called _____.

An unusual stretch of repeated sequences at the tips of a DNA molecule forming a cap at each end of the chromosome is called a ________.

Which of the following words or phrases does not accurately describe the contents of the nucleus?

What strategy in transcription factor research allows the simultaneous monitoring of all sites in the genome that carry out a particular activity with the goal of identifying all of the sites bound by a given transcription factor under a given set of physiological conditions?

How do allolactose and lactose differ?

Which type of molecule binds at the core promoter sites in association with RNA polymerase?

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

Gene Expression: From Transcription to Translation

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 12: Control of Gene Expression

What is probably the single most important distinction between prokaryotes and eukaryotes?

The HLH motif is often preceded by a stretch of highly ______ amino acids whose ______ charged side chains contact DNA and determine the transcription factor's sequence specificity.

Transcription factors bound at the enhancer stimulate the initiation of transcription at the core promoter through the action of intermediaries called _____.

An unusual stretch of repeated sequences at the tips of a DNA molecule forming a cap at each end of the chromosome is called a ________.

Which of the following words or phrases does not accurately describe the contents of the nucleus?

What strategy in transcription factor research allows the simultaneous monitoring of all sites in the genome that carry out a particular activity with the goal of identifying all of the sites bound by a given transcription factor under a given set of physiological conditions?

How do allolactose and lactose differ?

Which type of molecule binds at the core promoter sites in association with RNA polymerase?

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

Gene Expression: From Transcription to Translation

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 HLH motif is often preceded by a stretch of highly amino acids whose charged side chains contact DNA and determine the transcription factor's sequence specificity.