chapter 4

Question 1

is the life cycle of individual cells.

Answer 1

cell cycle

Question 2

are initiated by division of mother cells.

Answer 2

cells

Question 3

when plants cell are in their final form and they stop dividing is called

Answer 3

(cell
cycle arrests).

Question 4

are more protective if dead.

Answer 4

bark cells

Question 5

The cell cycle can be
divided into

Answer 5

growth phase and division phase

Question 5

The cell cycle can be
divided into

Answer 5

growth phase and division phase

Question 6

is the phase of the cell cycle in which a typical cell spends most of its life.

Answer 6

interphase

Question 7

Three phases can be
detected during
interphase.

Answer 7

G1 Phase
S Phase
G2 phase

Question 8

are
synthesized to be used
for DNA replication.

Answer 8

Nucleotides

Question 9

During the G1 phase (gap 1)
The cell is recovering
from division.

true or false

Answer 9

true

Question 10

is the longest
part of the cell cycle.

Answer 10

g1 or growth 1 phase

Question 11

Thousands of genes are
attached in a linear
sequence forming a

Answer 11

chromosome

Question 12

how many chromosomes do most plants have

Answer 12

5 to 30 chromosomes

Question 13

has a
centromere and is
capped by a telomere on each end

Answer 13

chromosome

Question 14

Each duplicate is a
chromatid; or a

Answer 14

sister chromatids

Question 15

enter S phase and replicate
one or more times before
differentiating is called

Answer 15

endoreduplication

Question 16

Cells prepare for division.
The α- and β-tubulins
necessary for spindle
microtubules are
synthesized

Answer 16

during g2 phase

Question 17

The cell produces ______
for processing
chromosomes and
breaking down the nuclear
envelope.

Answer 17

proteins

Question 18

Division of the
nucleus is called

Answer 18

karyokinesis.

Question 19

Duplication
division

Answer 19

mitosis

Question 20

Reduction
division

Answer 20

meiosis

Question 21

Division of the
cytoplasm is

Answer 21

cytokinesis.

Question 22

occurs as the body grows and increases
in cell number.

Answer 22

mitosis

Question 23

two types of division phase

Answer 23

mitosis and meiosis

Question 24

what are the stages in mitosis

Answer 24

Prophase

Metaphase

Anaphase

Telophase

Question 25

The first phase in mitosis is

Answer 25

prophase.

Question 26

what phase is it when Chromosomes condense, the nucleolus becomes invisible, the nuclear envelope breaks into
vesicles. Spindle fibers attach to the kinetochore—a

Answer 26

prophase

Question 27

a protein layer on
each chromatid.

Answer 27

kinetochore

Question 28

what phase is it when Microtubules push
and pull the chromosomes toward the cell

Answer 28

methaphase

Question 29

what phase of mitosis if the Spindle
microtubules shorten and pull the twin
chromatids toward opposite
poles of the cell.

Answer 29

Anaphase

Question 30

what phase of mitosis when the chromatids
reach each pole of the cell, Chromosomes
uncondensed. New nucleoli
appear.

Answer 30

Telophase