Cell Division

Question 1

process by which cells reproduce themselves.

Answer 1

Cell division

Question 2

The two types of cell division

Answer 2

• somatic cell division
• reproductive cell division

Question 3

Nuclear division

Answer 3

Mitosis

Question 4

Cytoplasmic division

Answer 4

Cytokinesis

Question 5

produce two genetically
identical cells, each with the
same number and kind of
chromosomes as the original
cell.

Answer 5

Somatic cell division

Question 6

produces gametes, the cells
needed to form the next
generation of sexually
reproducing organisms

Answer 6

Reproductive cell division

Question 7

The cell cycle is an orderly sequence of events in which a somatic cell duplicates its
contents and divides in two.

Answer 7

Somatic cell division

Question 8

Human cells contain __ pairs of
chromosomes, for a total of __.

Answer 8

23, 46

Question 9

Consists of two sets of chromosomes called

Answer 9

Diploid cells

Question 10

The two chromosomes that make up each pair are called

Answer 10

homologous chromosomes
or homologs

Question 11

The exception to this rule is one pair of
chromosomes called the

Answer 11

Sex chromosomes

Question 12

What is are the cell cycles

Answer 12

Mitosis phase
Interphase

Question 13

3 phase of interphase

Answer 13

G1
S
G2

Question 14

What are the four stages of mitosis phase

Answer 14

Prophase
Metaphase
Anaphase
Telophase

Question 15

prophase chromosome consists of
a pair of identical strands called

Answer 15

Chromatids

Question 16

At the outside of each centromere
is a protein complex known as the

Answer 16

Kinetochore

Question 17

In the middle of the chromosomes

Answer 17

Centromere

Question 18

a football-shaped
assembly of microtubules that
attach to the kinetochore

Answer 18

Mitotic spindle

Question 19

the mitotic
spindle align the centromeres of
the chromatid pairs at the exact
center of the mitotic spindle.

Answer 19

Microtubules

Question 20

This plane of alignment of the
centromeres is called the

Answer 20

Metaphase plate

Question 21

The microtubules of the mitotic
spindle align the centromeres of
the chromatid pairs at the exact
center of the mitotic spindle.

Answer 21

Metaphase

Question 22

The centromeres split,
separating the two members of
each chromatid pair, which
move toward opposite poles of
the cell.

Answer 22

Anaphase

Question 23

The identical sets of
chromosomes, now at
opposite poles of the cell,
uncoil and revert to the
threadlike chromatin form.

Answer 23

Telophase

Question 24

This process usually begins in late anaphase with the
formation of a ____ a slight indentation
of the plasma membrane, and is completed after
telophase.

Answer 24

Cleavage furrow

Question 25

usually appears midway between
the centrosomes and extends around the periphery of the cell

Answer 25

Cleavage furrow

Question 26

Replication of DNA and centrosomes

Answer 26

S phase

Question 27

the reproductive cell division that occurs in the gonads (ovaries
and testes), produces gametes in which the number of
chromosomes is reduced by half.

Answer 27

Meiosis

Question 28

As a result, gametes contain a single set of 23 chromosomes
and thus are _____

Answer 28

Haploids cell

Question 29

Two sister chromatids of
each pair of homologous
chromosomes pair off , an
event called

Answer 29

Synapsis

Question 30

The resulting four chromatids
form a structure called a

Answer 30

Tetrad

Question 31

Such an exchange between
parts of nonsister (genetically
different) chromatids is called

Answer 31

Crossing-over