Question 1

What is required for the separation of homologous chromosomes at anaphase I of meiosis I?

Accepted Answer

A) the separation of sister centromeres 
B) the dissolution of the chiasmata 
C) the dissolution of the centromeres 
D) the dissolution of the centrosomes 
E) the separation of nucleosomes 
A) the separation of sister centromeres 
B) the dissolution of the chiasmata 
C) the dissolution of the centromeres 
D) the dissolution of the centrosomes 
E) the separation of nucleosomes

Question 2

When is a kinetochore assembled on the centromere?

Accepted Answer

A) prophase 
B) anaphase 
C) telophase 
D) metaphase 
E) interphase 
A) prophase 
B) anaphase 
C) telophase 
D) metaphase 
E) interphase

Question 3

What triggers the entry of a yeast cell into mitosis?

Accepted Answer

A) the addition of inhibitory phosphate groups to Cyclin-Cdk by the Cdc25 phosphatase 
B) the removal of inhibitory phosphate groups from Cyclin-Cdk by the Cdc25 phosphatase 
C) the addition of inhibitory phosphate groups to Cyclin-Cdk by the Wee1 kinase 
D) the removal of inhibitory phosphate groups from Cyclin-Cdk by the Wee1 kinase 
E) the removal of phosphate groups from the Wee1 kinase 
A) the addition of inhibitory phosphate groups to Cyclin-Cdk by the Cdc25 phosphatase 
B) the removal of inhibitory phosphate groups from Cyclin-Cdk by the Cdc25 phosphatase 
C) the addition of inhibitory phosphate groups to Cyclin-Cdk by the Wee1 kinase 
D) the removal of inhibitory phosphate groups from Cyclin-Cdk by the Wee1 kinase 
E) the removal of phosphate groups from the Wee1 kinase

Question 4

What is the name given to the site at which a dividing plant cell will build its cell division plane?

Accepted Answer

A) Pre-mitosis band 
B) prophase band 
C) preprophase band 
D) telophase band 
A) Pre-mitosis band 
B) prophase band 
C) preprophase band 
D) telophase band

Question 5

Epithelial cell division and turnover is thought to be regulated through the activity of:

Accepted Answer

A) voltage-gated channels 
B) ligand-gated channels 
C) mechano-gated channels 
D) all are correct choices 
A) voltage-gated channels 
B) ligand-gated channels 
C) mechano-gated channels 
D) all are correct choices

Question 6

In the human female, after their long arrest, when do oocytes resume meiosis?

Accepted Answer

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

Question 7

What happens if condensin protein is removed from frog egg extract used to treat chromosomes in vitro?

Accepted Answer

A) Compaction of the chromosomes continues as normal. 
B) Compaction of the chromosomes occurs more quickly than normal. 
C) Compaction of the chromosomes is prevented. 
D) The DNA expands further and fills the entire cell. 
E) Compaction of the chromosomes occurs but occurs more slowly. 
A) Compaction of the chromosomes continues as normal. 
B) Compaction of the chromosomes occurs more quickly than normal. 
C) Compaction of the chromosomes is prevented. 
D) The DNA expands further and fills the entire cell. 
E) Compaction of the chromosomes occurs but occurs more slowly.

Question 8

What usually happens to vertebrate eggs immediately after they have been fertilized?

Accepted Answer

A) Cytokinesis begins. 
B) They start to grow. 
C) Mitosis begins. 
D) Meiosis is completed. 
E) The egg sheds lots of cytoplasm. 
A) Cytokinesis begins. 
B) They start to grow. 
C) Mitosis begins. 
D) Meiosis is completed. 
E) The egg sheds lots of cytoplasm.

Question 9

The generally short-lived stage between the two meiotic divisions is called ________.

Accepted Answer

A) interphase 
B) intermediacy 
C) interkinesis 
D) middlephase 
E) zwitterphase 
A) interphase 
B) intermediacy 
C) interkinesis 
D) middlephase 
E) zwitterphase

Question 10

Once a fission yeast cell passes START, the cell is committed to DNA and cellular replication. What is responsible for activating cdc2 at this time? (Select all correct choices)

Accepted Answer

A) one or more G1 cyclins 
B) one or more G2 cyclins 
C) one or more S cyclins 
D) one or more M cyclins 
E) one or more G0 cyclins 
A) one or more G1 cyclins 
B) one or more G2 cyclins 
C) one or more S cyclins 
D) one or more M cyclins 
E) one or more G0 cyclins

Question 11

Regarding the formation of the cell wall partition between two newly created daughter plant cells, which statement is INCORRECT?

Accepted Answer

A) cell wall formation begins in the center of the cell and moves laterally 
B) a simpler precursor known as the cell disc is formed first 
C) Golgi-derived vesicles play a role in forming the new cell wall 
D) the assembly of proteins required during the cell wall partition formation is known as the phragmoplast 
A) cell wall formation begins in the center of the cell and moves laterally 
B) a simpler precursor known as the cell disc is formed first 
C) Golgi-derived vesicles play a role in forming the new cell wall 
D) the assembly of proteins required during the cell wall partition formation is known as the phragmoplast

Question 12

What molecule is responsible for holding sister chromatids together through G2 and into mitosis?

Accepted Answer

A) compressin 
B) cohesin 
C) condensin 
D) connexin 
E) contractin 
A) compressin 
B) cohesin 
C) condensin 
D) connexin 
E) contractin

Question 13

What event marks the end of zygotene?

Accepted Answer

A) the beginning of synapsis 
B) the beginning of genetic recombination 
C) the end of synapsis 
D) the start of metaphase 
E) the formation of the synaptonemal complex 
A) the beginning of synapsis 
B) the beginning of genetic recombination 
C) the end of synapsis 
D) the start of metaphase 
E) the formation of the synaptonemal complex

Question 14

What is the presently accepted function of the synaptonemal complex thought to be?

Accepted Answer

A) It serves to initiate genetic recombination. 
B) It maintains RNA in association with the chromosomes. 
C) It functions primarily as a scaffold to allow interacting chromatids to complete crossover activities. 
D) It prevents the breakage of the DNA double helix at the wrong place. 
E) It assures that the DNA double helix breaks at exactly the right place. 
A) It serves to initiate genetic recombination. 
B) It maintains RNA in association with the chromosomes. 
C) It functions primarily as a scaffold to allow interacting chromatids to complete crossover activities. 
D) It prevents the breakage of the DNA double helix at the wrong place. 
E) It assures that the DNA double helix breaks at exactly the right place.

Question 15

What appears to be responsible for the tighter cohesin-mediated adhesion between chromosomes seen at centromeres rather than along the chromosome arms?

Accepted Answer

A) elevated phosphorylation 
B) a kinase found at the centromere that phosphorylates cohesin 
C) a phosphatase found at the centromere that removes phosphate groups from cohesin 
D) a phosphatase found in the chromosome arms that removes phosphate groups from cohesin 
E) a phosphatase found in the chromosome arms that adds phosphate groups to cohesin 
A) elevated phosphorylation 
B) a kinase found at the centromere that phosphorylates cohesin 
C) a phosphatase found at the centromere that removes phosphate groups from cohesin 
D) a phosphatase found in the chromosome arms that removes phosphate groups from cohesin 
E) a phosphatase found in the chromosome arms that adds phosphate groups to cohesin

Question 16

By which process are gametes produced from a gametophyte?

Accepted Answer

A) meiosis 
B) cytokinesis 
C) mitosis 
D) fission 
E) replication 
A) meiosis 
B) cytokinesis 
C) mitosis 
D) fission 
E) replication

Question 17

What is the average length of M phase in mammalian cells?

Accepted Answer

A) about 1 hour 
B) about 10 minutes 
C) about 10 hours 
D) 4 hours and 35 minutes 
E) about a day 
A) about 1 hour 
B) about 10 minutes 
C) about 10 hours 
D) 4 hours and 35 minutes 
E) about a day

Question 18

Microtubules are nucleated in the vicinity of the centrosomes if cells possess centrosomes. Where do they nucleate in cells lacking centrosomes?

Accepted Answer

A) in the vicinity of the nucleolus 
B) in the vicinity of the mitochondria 
C) in the vicinity of the chromosomes 
D) in the vicinity of the cell membrane 
E) in the vicinity of the lysosomes 
A) in the vicinity of the nucleolus 
B) in the vicinity of the mitochondria 
C) in the vicinity of the chromosomes 
D) in the vicinity of the cell membrane 
E) in the vicinity of the lysosomes

Question 19

During which stage of prophase I does the bulk of oocyte growth occur?

Accepted Answer

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

Question 20

What controls the progression of a cell from G2 to M?

Accepted Answer

A) mitotic cyclin B-Cdk1 
B) synthetic Cdk 
C) the spindle 
D) chromosome compaction 
E) mitotic cyclin A- Cpk 
A) mitotic cyclin B-Cdk1 
B) synthetic Cdk 
C) the spindle 
D) chromosome compaction 
E) mitotic cyclin A- Cpk

What is required for the separation of homologous chromosomes at anaphase I of meiosis I?

When is a kinetochore assembled on the centromere?

What triggers the entry of a yeast cell into mitosis?

What is the name given to the site at which a dividing plant cell will build its cell division plane?

Epithelial cell division and turnover is thought to be regulated through the activity of:

In the human female, after their long arrest, when do oocytes resume meiosis?

What happens if condensin protein is removed from frog egg extract used to treat chromosomes in vitro?

What usually happens to vertebrate eggs immediately after they have been fertilized?

The generally short-lived stage between the two meiotic divisions is called ________.

Once a fission yeast cell passes START, the cell is committed to DNA and cellular replication. What is responsible for activating cdc2 at this time? (Select all correct choices)

Regarding the formation of the cell wall partition between two newly created daughter plant cells, which statement is INCORRECT?

What molecule is responsible for holding sister chromatids together through G₂ and into mitosis?

What event marks the end of zygotene?

What is the presently accepted function of the synaptonemal complex thought to be?

What appears to be responsible for the tighter cohesin-mediated adhesion between chromosomes seen at centromeres rather than along the chromosome arms?

By which process are gametes produced from a gametophyte?

What is the average length of M phase in mammalian cells?

Microtubules are nucleated in the vicinity of the centrosomes if cells possess centrosomes. Where do they nucleate in cells lacking centrosomes?

During which stage of prophase I does the bulk of oocyte growth occur?

What controls the progression of a cell from G₂ to M?

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

Exam 14: Cellular Reproduction

What is required for the separation of homologous chromosomes at anaphase I of meiosis I?

When is a kinetochore assembled on the centromere?

What triggers the entry of a yeast cell into mitosis?

What is the name given to the site at which a dividing plant cell will build its cell division plane?

Epithelial cell division and turnover is thought to be regulated through the activity of:

In the human female, after their long arrest, when do oocytes resume meiosis?

What happens if condensin protein is removed from frog egg extract used to treat chromosomes in vitro?

What usually happens to vertebrate eggs immediately after they have been fertilized?

The generally short-lived stage between the two meiotic divisions is called ________.

Once a fission yeast cell passes START, the cell is committed to DNA and cellular replication. What is responsible for activating cdc2 at this time? (Select all correct choices)

Regarding the formation of the cell wall partition between two newly created daughter plant cells, which statement is INCORRECT?

What molecule is responsible for holding sister chromatids together through G2 and into mitosis?

What event marks the end of zygotene?

What is the presently accepted function of the synaptonemal complex thought to be?

What appears to be responsible for the tighter cohesin-mediated adhesion between chromosomes seen at centromeres rather than along the chromosome arms?

By which process are gametes produced from a gametophyte?

What is the average length of M phase in mammalian cells?

Microtubules are nucleated in the vicinity of the centrosomes if cells possess centrosomes. Where do they nucleate in cells lacking centrosomes?

During which stage of prophase I does the bulk of oocyte growth occur?

What controls the progression of a cell from G2 to M?

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

What molecule is responsible for holding sister chromatids together through G₂ and into mitosis?

What controls the progression of a cell from G₂ to M?