Question 1

Match the correct term with its corresponding description:
-oncogene

Accepted Answer

A) process in which malignant cells spread from one part of the body to another 
B) gene that helps transform a normal cell into a tumor cell 
C) enzyme that lengthens telomeres 
D) accumulation of abnormally dividing cells 
E) disease that occurs when a malignant neoplasm physically and metabolically disrupts body tissues
F)tumors form when these gene products are missing
G)noncoding DNA sequence at the end of chromosomes that protects coding sequences from degradation
H)gene that, by mutation, can become an oncogene 
A) process in which malignant cells spread from one part of the body to another 
B) gene that helps transform a normal cell into a tumor cell 
C) enzyme that lengthens telomeres 
D) accumulation of abnormally dividing cells 
E) disease that occurs when a malignant neoplasm physically and metabolically disrupts body tissues
F)tumors form when these gene products are missing
G)noncoding DNA sequence at the end of chromosomes that protects coding sequences from degradation
H)gene that, by mutation, can become an oncogene B

Question 2

Why are stem cells able to divide indefinitely?

Accepted Answer

Stem cells are immortal because they continue to make telomerase-an enzyme that lengthens telomeres by adding TTAGGG repeats to them. In an adult body, only stem cells make telomerase; differentiated cells normally do not.

Question 3

​A senescent cell is metabolically active but cannot divide because it has sustained some type of damage.

Accepted Answer

A) True 
 B)False  False

Question 4

Who was Henrietta Lacks? How was she important to the study of cells?

Accepted Answer

She was a cancer patient whose cells wer

Question 5

-?The cell in the accompanying figure is in ____.

Accepted Answer

A) ?early prophase 
B) ?prophase 
C) ?telophase 
D) ?anaphase 
E) ?metaphase 
A) ?early prophase 
B) ?prophase 
C) ?telophase 
D) ?anaphase 
E) ?metaphase

Question 6

An epidermal growth factor (EGF) stimulates a cell to enter mitosis by binding to a receptor on the cell's plasma membrane. The EGF receptor is a product of a ____ gene.

Accepted Answer

A) repressor 
B) structural 
C) master 
D) proto-onco 
E) growth 
A) repressor 
B) structural 
C) master 
D) proto-onco 
E) growth

Question 7

The mitotic spindle attaches to chromosomes at the _____.

Accepted Answer

A) centriole 
B) contractile ring 
C) centromere 
D) centrosome 
E) telomere 
A) centriole 
B) contractile ring 
C) centromere 
D) centrosome 
E) telomere

Question 8

​What is a cell line and what is its significance in studying human diseases?

Accepted Answer

​Cell lines are immortal cell

Question 9

Mitosis ends when ____.​

Accepted Answer

A) ​sister chromatids are packaged in the same cell 
B) ​DNA replicates 
C) ​a new nuclear envelope forms around each cluster of chromosomes 
D) ​centrioles move toward opposite poles of the cell 
E) ​new plasma membranes form to separate the two descendent cells 
A) ​sister chromatids are packaged in the same cell 
B) ​DNA replicates 
C) ​a new nuclear envelope forms around each cluster of chromosomes 
D) ​centrioles move toward opposite poles of the cell 
E) ​new plasma membranes form to separate the two descendent cells

Question 10

Cytokinesis in plant cells ____.

Accepted Answer

A) requires vesicles to cluster at the future plane of division 
B) occurs when the plasma membrane is pulled inward by a ring of microtubules 
C) usually precedes nuclear division 
D) involves a cleavage furrow 
E) occurs exactly the same as in animal cells 
A) requires vesicles to cluster at the future plane of division 
B) occurs when the plasma membrane is pulled inward by a ring of microtubules 
C) usually precedes nuclear division 
D) involves a cleavage furrow 
E) occurs exactly the same as in animal cells

Question 11

Chromosomes are duplicated during the ____ phase of the cell cycle.

Accepted Answer

A) M 
B) D 
C) G1 
D) G2 
E) S 
A) M 
B) D 
C) G1 
D) G2 
E) S

Question 12

A contractile ring forms to separate two cells during cytokinesis in plants.​

Accepted Answer

A) True 
 B)False

Question 13

Define mitosis and explain why prokaryotes do not undergo mitosis.

Accepted Answer

Mitosis is a nuclear division

Question 14

Sometimes, malignant cells do not stay properly anchored in tissues because of the loss of function of ____.

Accepted Answer

A) plasma membrane adhesion proteins 
B) nuclear membranes 
C) cell walls 
D) oncogenes 
E) tumor suppressor genes 
A) plasma membrane adhesion proteins 
B) nuclear membranes 
C) cell walls 
D) oncogenes 
E) tumor suppressor genes

Question 15

​Cancer cells characteristically express high levels of telomerase.

Accepted Answer

A) True 
 B)False

Question 16

The distribution of cytoplasm to daughter cells is accomplished during ____.

Accepted Answer

A) eukaryotic fission 
B) mitosis 
C) meiosis 
D) cytokinesis 
E) interphase 
A) eukaryotic fission 
B) mitosis 
C) meiosis 
D) cytokinesis 
E) interphase

Question 17

Which phase of the cell cycle lasts the longest?

Accepted Answer

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

Question 18

Match each term with its corresponding description.
-cleavage furrow

Accepted Answer

A) formed from lengthening microtubules 
B) a band of actin and motor proteins that forms under the plasma membrane during anaphase 
C) disk-shaped structure that forms and partitions descendant cells during cytokinesis in a plant cell 
D) location at which spindle microtubules assemble and bind to chromosomes 
E) in a dividing animal cell, the indentation where cytoplasmic division will occur 
A) formed from lengthening microtubules 
B) a band of actin and motor proteins that forms under the plasma membrane during anaphase 
C) disk-shaped structure that forms and partitions descendant cells during cytokinesis in a plant cell 
D) location at which spindle microtubules assemble and bind to chromosomes 
E) in a dividing animal cell, the indentation where cytoplasmic division will occur

Question 19

​All cells in the human body have functioning telomerase enzymes.

Accepted Answer

A) True 
 B)False

Question 20

Chromosomes are present as attached sister chromatids in which stages? ?
I.Metaphase
II.Telophase
III.Prophase
IV.Anaphase

Accepted Answer

A) III and IV 
B) I, III, and IV 
C) I and III 
D) I, II, and III 
E) I, II, III, and IV 
A) III and IV 
B) I, III, and IV 
C) I and III 
D) I, II, and III 
E) I, II, III, and IV

Exam 11: How Cells Reproduce

Match the correct term with its corresponding description: -oncogene

Why are stem cells able to divide indefinitely?

​A senescent cell is metabolically active but cannot divide because it has sustained some type of damage.

Who was Henrietta Lacks? How was she important to the study of cells?

-?The cell in the accompanying figure is in ____.

An epidermal growth factor (EGF) stimulates a cell to enter mitosis by binding to a receptor on the cell's plasma membrane. The EGF receptor is a product of a ____ gene.

The mitotic spindle attaches to chromosomes at the _____.

​What is a cell line and what is its significance in studying human diseases?

Mitosis ends when ____.​

Cytokinesis in plant cells ____.

Chromosomes are duplicated during the ____ phase of the cell cycle.

A contractile ring forms to separate two cells during cytokinesis in plants.​

Define mitosis and explain why prokaryotes do not undergo mitosis.

Sometimes, malignant cells do not stay properly anchored in tissues because of the loss of function of ____.

​Cancer cells characteristically express high levels of telomerase.

The distribution of cytoplasm to daughter cells is accomplished during ____.

Which phase of the cell cycle lasts the longest?

Match each term with its corresponding description. -cleavage furrow

​All cells in the human body have functioning telomerase enzymes.

Chromosomes are present as attached sister chromatids in which stages? ? I.Metaphase II.Telophase III.Prophase IV.Anaphase

The Science of Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure

Ground Rules of Metabolism

Where It Starts-Photosynthesis

Releasing Chemical Energy

DNA Structure and Function

From DNA to Protein

Control of Gene Expression

Meiosis and Sexual Reproduction

Patterns in Inherited Traits

Human Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Lifes Origin and Early Evolution

Viruses, Bacteria, and Archaea

The Protists

Plant Evolution

Fungi

Animals I: Major Invertebrate Groups

Animals Ii: the Chordates

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Reproduction and Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Effects on the Biosphere

Filters

A senescent cell is metabolically active but cannot divide because it has sustained some type of damage.

What is a cell line and what is its significance in studying human diseases?

Mitosis ends when ____.

A contractile ring forms to separate two cells during cytokinesis in plants.

Cancer cells characteristically express high levels of telomerase.

All cells in the human body have functioning telomerase enzymes.