Question 1

What multiprotein complex has recently been shown to play a significant role in chromosome compaction?

Accepted Answer

A) compressin 
B) condensin 
C) elastin 
D) loopin 
E) mitosin 
A) compressin 
B) condensin 
C) elastin 
D) loopin 
E) mitosin

Question 2

Which of the following is involved with the machinery that links kinetochores to dynamic microtubules?

Accepted Answer

A) motor proteins 
B) a protein complex called Ndc80 
C) the KMN network 
D) curling microtubule protofilaments 
E) all of these are correct 
A) motor proteins 
B) a protein complex called Ndc80 
C) the KMN network 
D) curling microtubule protofilaments 
E) all of these are correct

Question 3

The flux of which ion appears to play a role in triggering Piezo1-mediated cell division in stretched epithelial cell layers?

Accepted Answer

A) potassium 
B) sodium 
C) magnesium 
D) calcium 
A) potassium 
B) sodium 
C) magnesium 
D) calcium

Question 4

The sunburst arrangement of microtubules that forms around each centrosome during early prophase is called ________.

Accepted Answer

A) a sunflower 
B) an arnost 
C) an aster 
D) an astral fiber 
E) a barrel 
A) a sunflower 
B) an arnost 
C) an aster 
D) an astral fiber 
E) a barrel

Question 5

What drives the separation of centrosomes?

Accepted Answer

A) motor proteins associated with microfilaments 
B) motor proteins associated with adjacent microtubules 
C) contraction of individual microfilaments 
D) sliding of adjacent microfilaments over one another 
E) contraction of adjacent microtubules 
A) motor proteins associated with microfilaments 
B) motor proteins associated with adjacent microtubules 
C) contraction of individual microfilaments 
D) sliding of adjacent microfilaments over one another 
E) contraction of adjacent microtubules

Question 6

What protein is required to drive the mammalian cell through all cell cycle stages?

Accepted Answer

A) Cdk2 
B) Cdk1 
C) Wee1 kinase 
D) Cdk4 
E) cyklin D1 
A) Cdk2 
B) Cdk1 
C) Wee1 kinase 
D) Cdk4 
E) cyklin D1

Question 7

The random assortment of chromosomes at anaphase I accounts for a large amount of the _________ within a species.

Accepted Answer

A) stability 
B) genetic variability 
C) biochemical inhibition 
D) genetic uniformity 
E) genetic forbearance 
A) stability 
B) genetic variability 
C) biochemical inhibition 
D) genetic uniformity 
E) genetic forbearance

Question 8

What initiates the disassembly of the three major components of the nuclear envelope?

Accepted Answer

A) phosphorylation of key substrates by mitotic kinases, particularly cyclin B-Cdk1 
B) dephosphorylation of key substrates by mitotic phosphatases, particularly cyclin B-Cdk1 
C) a cascade begun by ATP synthase 
D) phosphorylation of key substrates by mitotic phosphatases, particularly cyclin B-Cdk 
E) methylation of key substrates by mitotic kinases, particularly cyclin B-Cdk1 
A) phosphorylation of key substrates by mitotic kinases, particularly cyclin B-Cdk1 
B) dephosphorylation of key substrates by mitotic phosphatases, particularly cyclin B-Cdk1 
C) a cascade begun by ATP synthase 
D) phosphorylation of key substrates by mitotic phosphatases, particularly cyclin B-Cdk 
E) methylation of key substrates by mitotic kinases, particularly cyclin B-Cdk1

Question 9

What are the three major components of the nuclear envelope?

Accepted Answer

A) nuclear pores, nuclear lamina, nuclear membrane aggregates 
B) RER, nuclear lamina, Na+-K+ pump 
C) nuclear pore complexes, nuclear lamina, nuclear membranes 
D) mitotic kinases, nuclear lamina, nuclear pore complexes 
E) phospholipids, nuclear pore complexes, nucleoplasm 
A) nuclear pores, nuclear lamina, nuclear membrane aggregates 
B) RER, nuclear lamina, Na+-K+ pump 
C) nuclear pore complexes, nuclear lamina, nuclear membranes 
D) mitotic kinases, nuclear lamina, nuclear pore complexes 
E) phospholipids, nuclear pore complexes, nucleoplasm

Question 10

What molecular motor uses microtubules to disassemble the nuclear membrane?

Accepted Answer

A) myosin 
B) kinesin 
C) dynein 
D) calpain 
E) calmodulin 
A) myosin 
B) kinesin 
C) dynein 
D) calpain 
E) calmodulin

Question 11

What stage of prophase I is usually recognized by the dissolution of the synaptonemal complex and the tendency of homologous chromosomes of the bivalents to pull away somewhat from each other?

Accepted Answer

A) pachytene 
B) leptotene 
C) diakinesis 
D) zygotene 
E) diplotene 
A) pachytene 
B) leptotene 
C) diakinesis 
D) zygotene 
E) diplotene

Question 12

At the outer surface of the centromere of each chromatid is a proteinaceous, buttonlike structure called the __________.

Accepted Answer

A) primary constriction 
B) residence 
C) kinetochore 
D) proteasome 
E) kinetosome 
A) primary constriction 
B) residence 
C) kinetochore 
D) proteasome 
E) kinetosome

Question 13

In the human female, when is prophase I of meiosis initiated?

Accepted Answer

A) at puberty 
B) prior to birth 
C) between the ages of 4 and 6 
D) at the beginning of each menstrual cycle 
E) at the end of each menstrual cycle 
A) at puberty 
B) prior to birth 
C) between the ages of 4 and 6 
D) at the beginning of each menstrual cycle 
E) at the end of each menstrual cycle

Question 14

What is an alternative to the classical view of the fate of the membranous portion of the nuclear envelope?

Accepted Answer

A) fragmentation into a population of small vesicles that disperse throughout the mitotic cell 
B) absorption of the membranes of the nuclear envelope into the membranes of the Golgi complex 
C) absorption of the membranes of the nuclear envelope into the membranes of the peroxisomes 
D) absorption of the membranes of the nuclear envelope into the membranes of the ER 
E) absorption of the membranes of the nuclear envelope into the membranes of the nucleoplasm 
A) fragmentation into a population of small vesicles that disperse throughout the mitotic cell 
B) absorption of the membranes of the nuclear envelope into the membranes of the Golgi complex 
C) absorption of the membranes of the nuclear envelope into the membranes of the peroxisomes 
D) absorption of the membranes of the nuclear envelope into the membranes of the ER 
E) absorption of the membranes of the nuclear envelope into the membranes of the nucleoplasm

Question 15

Crossing-over is important for ___________. (Select all correct choices)

Accepted Answer

A) ensuring proper chromosome segregation 
B) ensuring proper chromosome miscegenation 
C) introducing additional genetic variation into the population 
D) delaying meiosis for an appropriate and necessary amount of time 
A) ensuring proper chromosome segregation 
B) ensuring proper chromosome miscegenation 
C) introducing additional genetic variation into the population 
D) delaying meiosis for an appropriate and necessary amount of time

Question 16

The Holliday junction recombination intermediate is not a static structure because the linkage point may move in one direction or another, a process known as _________.

Accepted Answer

A) slippage 
B) intrusion 
C) branch fusion 
D) branch migration 
E) extrusion 
A) slippage 
B) intrusion 
C) branch fusion 
D) branch migration 
E) extrusion

Question 17

What permits the interaction between the cytoplasmically-formed mitotic spindle and the chromosomes to occur?

Accepted Answer

A) nuclear envelope breakdown 
B) nucleosome breakdown 
C) nucleolus breakdown 
D) chromatin dissolution 
E) chromosome condensation 
A) nuclear envelope breakdown 
B) nucleosome breakdown 
C) nucleolus breakdown 
D) chromatin dissolution 
E) chromosome condensation

Question 18

What stimulus can induce liver cells to proliferate?

Accepted Answer

A) interaction with an appropriate antigen 
B) interaction with an appropriate antibody 
C) surgical removal of part of the liver 
D) a buildup of bile in the liver 
E) glycogen buildup in the liver 
A) interaction with an appropriate antigen 
B) interaction with an appropriate antibody 
C) surgical removal of part of the liver 
D) a buildup of bile in the liver 
E) glycogen buildup in the liver

Question 19

As animal cells enter mitosis, their microtubules disassemble and then reassemble forming the mitotic spindle with a focus at the ________, a special microtubule-organizing structure.

Accepted Answer

A) kinetosome 
B) centrosome 
C) kinetochore 
D) centromere 
E) chromosome 
A) kinetosome 
B) centrosome 
C) kinetochore 
D) centromere 
E) chromosome

Question 20

Which significant cellular activities appear to be regulated by Piezo1? (Select all correct choices)

Accepted Answer

A) enabling of touch sensation in some neurons 
B) controlling of white blood cell volume 
C) controlling of red blood cell volume 
D) regulation of vascular development 
E) promoting cell division in epithelial cell layers 
A) enabling of touch sensation in some neurons 
B) controlling of white blood cell volume 
C) controlling of red blood cell volume 
D) regulation of vascular development 
E) promoting cell division in epithelial cell layers

What multiprotein complex has recently been shown to play a significant role in chromosome compaction?

Which of the following is involved with the machinery that links kinetochores to dynamic microtubules?

The flux of which ion appears to play a role in triggering Piezo1-mediated cell division in stretched epithelial cell layers?

The sunburst arrangement of microtubules that forms around each centrosome during early prophase is called ________.

What drives the separation of centrosomes?

What protein is required to drive the mammalian cell through all cell cycle stages?

The random assortment of chromosomes at anaphase I accounts for a large amount of the _________ within a species.

What initiates the disassembly of the three major components of the nuclear envelope?

What are the three major components of the nuclear envelope?

What molecular motor uses microtubules to disassemble the nuclear membrane?

What stage of prophase I is usually recognized by the dissolution of the synaptonemal complex and the tendency of homologous chromosomes of the bivalents to pull away somewhat from each other?

At the outer surface of the centromere of each chromatid is a proteinaceous, buttonlike structure called the __________.

In the human female, when is prophase I of meiosis initiated?

What is an alternative to the classical view of the fate of the membranous portion of the nuclear envelope?

Crossing-over is important for ___________. (Select all correct choices)

The Holliday junction recombination intermediate is not a static structure because the linkage point may move in one direction or another, a process known as _________.

What permits the interaction between the cytoplasmically-formed mitotic spindle and the chromosomes to occur?

What stimulus can induce liver cells to proliferate?

As animal cells enter mitosis, their microtubules disassemble and then reassemble forming the mitotic spindle with a focus at the ________, a special microtubule-organizing structure.

Which significant cellular activities appear to be regulated by Piezo1? (Select all correct choices)

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

Control of Gene Expression

Dna Replication and Repair

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

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Exam 14: Cellular Reproduction

What multiprotein complex has recently been shown to play a significant role in chromosome compaction?

Which of the following is involved with the machinery that links kinetochores to dynamic microtubules?

The flux of which ion appears to play a role in triggering Piezo1-mediated cell division in stretched epithelial cell layers?

The sunburst arrangement of microtubules that forms around each centrosome during early prophase is called ________.

What drives the separation of centrosomes?

What protein is required to drive the mammalian cell through all cell cycle stages?

The random assortment of chromosomes at anaphase I accounts for a large amount of the _________ within a species.

What initiates the disassembly of the three major components of the nuclear envelope?

What are the three major components of the nuclear envelope?

What molecular motor uses microtubules to disassemble the nuclear membrane?

What stage of prophase I is usually recognized by the dissolution of the synaptonemal complex and the tendency of homologous chromosomes of the bivalents to pull away somewhat from each other?

At the outer surface of the centromere of each chromatid is a proteinaceous, buttonlike structure called the __________.

In the human female, when is prophase I of meiosis initiated?

What is an alternative to the classical view of the fate of the membranous portion of the nuclear envelope?

Crossing-over is important for ___________. (Select all correct choices)

The Holliday junction recombination intermediate is not a static structure because the linkage point may move in one direction or another, a process known as _________.

What permits the interaction between the cytoplasmically-formed mitotic spindle and the chromosomes to occur?

What stimulus can induce liver cells to proliferate?

As animal cells enter mitosis, their microtubules disassemble and then reassemble forming the mitotic spindle with a focus at the ________, a special microtubule-organizing structure.

Which significant cellular activities appear to be regulated by Piezo1? (Select all correct choices)

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

Control of Gene Expression

Dna Replication and Repair

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters