Question 1

Genes known as _________ encode proteins that stimulate cell division.

Accepted Answer

proto-oncogenes

Question 2

Which of the following is not a stage of mitosis?

Accepted Answer

A) Interphase 
B) Prophase 
C) Anaphase 
D) Metaphase 
E) Telophase 
A) Interphase 
B) Prophase 
C) Anaphase 
D) Metaphase 
E) Telophase A

Question 3

All of the following are correct about cancer except:

Accepted Answer

A) malignant tumors are invasive 
B) malignant tumors are not encapsulated 
C) cancer cells can sometimes spread into the bloodstream 
D) benign cells are those that have metastasized 
E) cancers are the direct result of mutations in growth-regulating genes 
A) malignant tumors are invasive 
B) malignant tumors are not encapsulated 
C) cancer cells can sometimes spread into the bloodstream 
D) benign cells are those that have metastasized 
E) cancers are the direct result of mutations in growth-regulating genes D

Question 4

During which stage of the cell cycle does the M checkpoint occur?

Accepted Answer

A) Metaphase 
B) Prophase 
C) Telophase 
D) S phase 
E) G1 
A) Metaphase 
B) Prophase 
C) Telophase 
D) S phase 
E) G1

Question 5

Why is mitosis also referred to as karyokinesis?

Accepted Answer

The nucleus is also referred t

Question 6

Which of the following does not occur during telophase?

Accepted Answer

A) the nuclear membrane disappears 
B) the nucleolus reappears 
C) chromosomes uncoil 
D) the spindle is disassembled 
E) cytokinesis often begins now 
A) the nuclear membrane disappears 
B) the nucleolus reappears 
C) chromosomes uncoil 
D) the spindle is disassembled 
E) cytokinesis often begins now

Question 7

When the chromosomes line up at the equatorial plane,you can conclude the cell is in:

Accepted Answer

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

Question 8

During which phase of the cell cycle is DNA synthesized?

Accepted Answer

A) G1 
B) G2 
C) S 
D) Prophase 
E) Metaphase 
A) G1 
B) G2 
C) S 
D) Prophase 
E) Metaphase

Question 9

Cytoplasm is cleaved in two during the _____________________ phase of the cell's life cycle.

Accepted Answer

C phase or

Question 10

After duplication,sister chromatids remain joined together:

Accepted Answer

A) until metaphase 
B) by the centromere 
C) throughout mitosis 
D) until telophase 
E) by the kinetochore 
A) until metaphase 
B) by the centromere 
C) throughout mitosis 
D) until telophase 
E) by the kinetochore

Question 11

A ______________ is a long DNA molecule that contains genes and has proteins to help it retain its shape.

Accepted Answer

The answer of A ______________ is a long DNA molecule...

Question 12

Mutations disabling key elements of the G1 checkpoint are associated with many cancers.

Accepted Answer

A) True 
 B)False

Question 13

During which stage of the cell cycle does the mitotic spindle begin to form?

Accepted Answer

A) S phase 
B) G1 
C) Telophase 
D) Prophase 
A) S phase 
B) G1 
C) Telophase 
D) Prophase

Question 14

The G1,S,and G2 phases of the cell cycle are collectively known as:

Accepted Answer

A) interphase 
B) prophase 
C) mitosis 
D) meiosis 
E) metaphase 
A) interphase 
B) prophase 
C) mitosis 
D) meiosis 
E) metaphase

Question 15

Most eukaryotes have between ___________ chromosomes in their body cells.

Accepted Answer

A) 1 and 15 
B) 10 and 50 
C) 100 and 200 
D) 200 and 300 
E) 350 and 500 
A) 1 and 15 
B) 10 and 50 
C) 100 and 200 
D) 200 and 300 
E) 350 and 500

Question 16

Describe what occurs during prophase of mitosis.

Accepted Answer

Chromosomes condense,the nucle

Question 17

What is telomerase?

Accepted Answer

A) A protein found in abundance on colon cancer cells 
B) An enzyme that inhibits the formation of small blood vessels that feed a tumor 
C) An enzyme that adds bases back to the tip of chromosomes every time a cell divides 
D) A chemical that allows the telophase stage of mitosis to proceed 
E) A chemical involved in RNA synthesis 
A) A protein found in abundance on colon cancer cells 
B) An enzyme that inhibits the formation of small blood vessels that feed a tumor 
C) An enzyme that adds bases back to the tip of chromosomes every time a cell divides 
D) A chemical that allows the telophase stage of mitosis to proceed 
E) A chemical involved in RNA synthesis

Question 18

What is the goal of angiogenesis inhibitors?

Accepted Answer

A) They inhibit the formation of small blood vessels that feed a tumor. 
B) They prevent the activation of protein kinases in the cell. 
C) They target the Ras protein,causing it to stop promoting cell division. 
D) They inhibit the synthesis of HER1 proteins on cancerous cells. 
E) All of the choices are correct. 
A) They inhibit the formation of small blood vessels that feed a tumor. 
B) They prevent the activation of protein kinases in the cell. 
C) They target the Ras protein,causing it to stop promoting cell division. 
D) They inhibit the synthesis of HER1 proteins on cancerous cells. 
E) All of the choices are correct.

Question 19

Which is not correct about the way prokaryotes divide?

Accepted Answer

A) They divide by binary fission. 
B) The chromosome is a single circular molecule of DNA. 
C) The replication of DNA occurs in one direction around the circle. 
D) They use the same DNA bases as in eukaryotes. 
E) When the cell reaches an appropriate size,the cell divides into two equal halves. 
A) They divide by binary fission. 
B) The chromosome is a single circular molecule of DNA. 
C) The replication of DNA occurs in one direction around the circle. 
D) They use the same DNA bases as in eukaryotes. 
E) When the cell reaches an appropriate size,the cell divides into two equal halves.

Question 20

During which stage of mitosis do replicated chromosomes condense and the nuclear envelope disappears?

Accepted Answer

A) Interphase 
B) Prophase 
C) Telophase 
D) Metaphase 
E) Anaphase 
A) Interphase 
B) Prophase 
C) Telophase 
D) Metaphase 
E) Anaphase

Exam 8: Mitosis

Genes known as _________ encode proteins that stimulate cell division.

Which of the following is not a stage of mitosis?

All of the following are correct about cancer except:

During which stage of the cell cycle does the M checkpoint occur?

Why is mitosis also referred to as karyokinesis?

Which of the following does not occur during telophase?

When the chromosomes line up at the equatorial plane,you can conclude the cell is in:

During which phase of the cell cycle is DNA synthesized?

Cytoplasm is cleaved in two during the _____________________ phase of the cell's life cycle.

After duplication,sister chromatids remain joined together:

A ______________ is a long DNA molecule that contains genes and has proteins to help it retain its shape.

Mutations disabling key elements of the G1 checkpoint are associated with many cancers.

During which stage of the cell cycle does the mitotic spindle begin to form?

The G1,S,and G2 phases of the cell cycle are collectively known as:

Most eukaryotes have between ___________ chromosomes in their body cells.

Describe what occurs during prophase of mitosis.

What is telomerase?

What is the goal of angiogenesis inhibitors?

Which is not correct about the way prokaryotes divide?

During which stage of mitosis do replicated chromosomes condense and the nuclear envelope disappears?

The Science of Biology

The Chemistry of Life

Molecules of Life

Cells

Energy and Life

Photosynthesis: Acquiring Energy From the Sun

How Cells Harvest Energy From Food

Meiosis

Foundations of Genetics

DNA: the Genetic Material

How Genes Work

Genomics and Biotechnology

Evolution and Natural Selection

How We Name Living Things

Prokaryotes: the First Single-Celled Creatures

Protists: Advent of the Eukaryotes

Fungi Invade the Land

Evolution of the Animal Phyla

History of the Vertebrates

How Humans Evolved

The Animal Body and How It Moves

Circulation

Respiration

The Path of Food Through the Animal Body

Maintaining the Internal Environment

How the Animal Body Defends Itself

The Nervous System

The Senses

Chemical Signaling Within the Animal Body

Reproduction and Development

Evolution of Plants

Plant Form and Function

Plant Reproduction and Growth

Populations and Communities

Ecosystems

Behavior and the Environment

Human Influences on the Living World

Filters

Mutations disabling key elements of the G₁ checkpoint are associated with many cancers.

The G₁,S,and G₂ phases of the cell cycle are collectively known as: