Science: Mitosis

Question 1

T/F Single cell organisms can reproduce by cell division.

Answer 1

True

Question 2

T/F The only function of cell division is reproduction

Answer 2

False

Question 3

T/R In multi-cellular organisms, cell division can help repair injured areas

Answer 3

True

Question 4

T/F Cell division produces two cells that are different from each other.

Answer 4

False

Question 5

what does the word part cyto mean?

Answer 5

hollow vessel

Question 6

what does the word part kinesis mean?

Answer 6

division

Question 7

Explain how cell division may take place for different reasons in unicellular org vs. multicellular org.

Answer 7

Unicellular-reproduction

Multicellular-growth, development, repair and reproduction

Question 8

Describe asexual reproduction.

Answer 8

• Occurs in unicellular organisms and some multicellular org

- a parent org buds, producing offspring.

Question 9

What is the name of genetic material in a cell?

Answer 9

DNA

Question 10

What does DNA stand for?

Answer 10

Deoxyribonucleic acid

Question 11

What determines the traits that a living thing inherits and needs to live?

Answer 11

DNA

Question 12

What contains instructions for an organisms growth, development, and activities?

Answer 12

DNA

Question 13

Describe the functions of DNA.

Answer 13

1. Determines the traits that a living thing inherits and needs to live
2. Contains instructions for an organisms growth, development, and activities

Question 14

Where is DNA found in a eukaryotic cell?

Answer 14

nucleus

Question 15

What is chromatin?

Answer 15

Where DNA and proteins exist for most of a cell’s life cycle

Question 16

A duplicated chromosome consists of two identical structures called what?

Answer 16

chromatids

Question 17

What are chromatids held together by?

Answer 17

centromere

Question 18

A duplicated chromosome is made of?

Answer 18

Two chromatids

Question 19

What are the tree stages of a cell cycle?

Answer 19

Interphase, Mitosis and Cytokinesis

Question 20

What is the name of the cell cycle during which the cell is not dividing?

Answer 20

Interphase

Question 21

What happens during interphase?

Answer 21

• cell is not dividing
• cell grows to about twice the size
• produces organelles
• still engages in normal life activities (transport & getting rid of wastes)
• Changes in this phase prepare it for division

Question 22

The part of the cell cycle during which the nucleus divides.

Answer 22

Mitosis

Question 23

Do prokaryotes undergo mitosis? How do you know?

Answer 23

No because they don’t have a nucleus.

Question 24

What is the end product of Mitosis?

Answer 24

Two nuclei that are identical to the original nucleus. (two identical sets of chromosomes with tow separate nuclei.

Question 25

What part of the cell cycle involves division of the parent cell's cytoplasm.

Answer 25

Cytokinesis

Question 26

When does cytokinesis begin?

Answer 26

the last step of mitosis

Question 27

Describe how cytokinesis happens.

Answer 27

the cell membrane pinches inward between the new nuclei

Question 28

Describe how cytokinesis happens in a cell with a cell wall.

Answer 28

A cell plate forms and becomes cell membranes that separate the new cells. The new cell walls form where the plate was.

Question 29

In what cell phase does the cell spend the most time?

Answer 29

Interphase

Question 30

In what part of the cell cycle is the cell not dividing?

Answer 30

Interphase

Question 31

What are the four phases of mitosis?

Answer 31

Prophase Metaphase Anaphase Telophase

Question 32

During this phase, the chromatin in the nucleus of a cell condenses and becomes visible under a microscope

Answer 32

Prophase

Question 33

During this phase, each chromosome consists of two chromatids held together by a centromere and the membrane around the nucleus breaks down

Answer 33

Prophase

Question 34

During this phase, chromosomes line up in the middle of the cell. The centromeres of the chromosomes are the same distance from each side the cells

Answer 34

Metaphase

Question 35

During this phase, the chromatids separate, they are pulled to opposite sides of the cell.

Answer 35

Anaphase

Question 36

During this phase, each side of the cell ends up with a complete set of chromosomes

Answer 36

Anaphase

Question 37

This is the last phase of mitosis

Answer 37

Telophase

Question 38

During this phase, a new nuclear membrane forms around each group of chromosomes

Answer 38

Telophase

Question 39

During this phase the cell will have two identical nuclei and the chromosomes become less condensed

Answer 39

Telophase

Question 40

During this phase cytokinesis begins

Answer 40

Telophase

Question 41

Three reasons that cells divide are?

Answer 41

reproduction, growth & repair

Question 42

They lack nuclei, so prokaryotes do not undergo ________?

Answer 42

Mitosis

Question 43

The cell produces organelles during which phase?

Answer 43

Interphase

Question 44

________ results in the formation of two new cells.

Answer 44

Cytokinesis

Question 45

Loose chromatin is compacted into ___a____, each of which has two ____b____ that are held together by a centromere.

Answer 45

a- chromosomes | b- chromatids

Question 46

_______ provides the information for cell growth and function.

Answer 46

DNA

Question 47

The cell spends most of its time in the ______ stage of the cell cycle

Answer 47

Interphase

Question 48

After ________, the nucleus of the parent cell has divided into two new nuclei.

Answer 48

Mitosis

Question 49

A _______ is the condensed visible form of chromatin

Answer 49

Chromosomes

Question 50

Describe the difference between division of a single-celled and multicellular organism

Answer 50

Unicellular organisms go through asexual reproduction with budding from the parent cell. Muliticellular organisms go through mitosis.

Question 51

Starting with prophase, what is the order of the phases of mitosis.

Answer 51

Prophase Metaphase, Anaphase, Telophase