Chapter 19 Pt. 2

Question 1

What is mitosis?

Answer 1

one nucleus divides into tow daughter nuclei containing the same number and kinds of chromosomes

Question 2

What is the cell cycle?

Answer 2

the entire sequence of events that a cell goes through, from its origin in the division of its parent cell through its own division into two daughter cells

Question 3

how long does the cell cycle usually take?

Answer 3

16-24 hours

Question 4

What is the interphase?

Answer 4

the period of the cell cycle between cell divisions

Question 5

Interphase is a time of intense __________ for cell division

Answer 5

preparation

Question 6

During interphase the ____ and _________ are duplicated

Answer 6

DNA

organelles

Question 7

During _________ the DNA and organelles are _________

Answer 7

interphase

duplicated

Question 8

During Interphase when the cell divides it creates ________ _____

Answer 8

daughter cells

Question 9

What are the three parts of interphase?

Answer 9

G1 (“first gap”)
S (DNA Synthesis)
G2 (“second gap”)

Question 10

During Interphase the genetic material is in the form of long, thin threads that rare often called ________

Answer 10

chromatin

Question 11

During Interphase the two copies, each an exact replicate of the original chromosome, stay attached to one another at a region known as the __________

Answer 11

centromere

Question 12

During Interphase, as long as the replicate copies remain attached, each copy is called a _________

Answer 12

chromatid

Question 13

If two attached chromatids are genetically identical and are referred to as ______ _________

Answer 13

sister chromatids

Question 14

What are the two conditions that must be made for healthy cells to divide?

Answer 14

(1) proteins monitor the environment within the cell to ensure that it’s appropriate for cell division
(2) the DNA has been accurately replicated

Question 15

What is the only exception to the two condition for healthy cells to divide?

Answer 15

cancer cells

Question 16

The division of body cells (after interphase) consists of what two processes that overlap somewhat in time?

Answer 16

(1) mitosis

(2) cytokinesis

Question 17

mitosis, the division of the _______

Answer 17

nucleus

Question 18

__________-the division of the cytoplasm

Answer 18

cytokinesis

Question 19

cytokinesis occurs toward the end of _______, sometime during ________

Answer 19

mitosis

telophase

Question 20

cytokinesis-the division of the ________

Answer 20

cytoplasm

Question 21

What are the four stages of mitosis?

Answer 21

(1) prophase
(2) metaphase
(3) anaphasse
(4) telophase

Question 22

Which stage of mitosis is this: a time when changes occur in the nucleus as well as the cytoplasm

Answer 22

prophase

Question 23

Which stage of mitosis is this: in the nucleus, the chromatin condenses and forms chromosomes as DNA wraps around histones

Answer 23

prophase

Question 24

Which stage of mitosis is this: the DNA forms a tightly compacted structures

Answer 24

prophase

Question 25

Which stage of mitosis is this: chromosomes condense

Answer 25

prophase

Question 26

Which stage of mitosis is this: during this no replication and gene activity is shut down

Answer 26

prophase

Question 27

Which stage of mitosis is this: the chromosomes attach to the mitotic spindles, forming a line at what is called the equator (center) of the mitotic spindles

Answer 27

metaphase

Question 28

Which stage of mitosis is this: chromosomes (consisting of two chromatids) line up at equatorial plate

Answer 28

metaphase

Question 29

Which stage of mitosis is this: begins when the sister chromatids of each chromosomes begin to separate, splitting at the centromere

Answer 29

anaphase

Question 30

Which stage of mitosis is this: the attachments between sister chromatids break

Answer 30

anaphase

Question 31

Which stage of mitosis is this: a nuclear envelope forms around each group of chromosomes at each pole, and the mitotic spindle disassembles

Answer 31

telophase

Question 32

Which stage of mitosis is this: new nuclei form, each with two complete sets of chromosomes

Answer 32

telophase

Question 33

Which stage of mitosis is this: cytokinesis divides cell into two daughter cells

Answer 33

telophase