Exercise 6: Mitosis

Question 1

It refers to the type of cell division that produces two genetically identical cells.

Answer 1

mitosis

Question 2

TRUE or FALSE:
In multicellular eukaryotes, mitosis enables development, growth, and repair.

Answer 2

True

Question 3

TRUE or FALSE:
The number of chromosomes each daughter cell receives in mitosis is similar to that of the parent.

Answer 3

True

Question 4

TRUE or FALSE:
Cell division occurs only in certain parts of organisms.

Answer 4

True

Question 5

Which plant cells are active in cell division?

Answer 5

cells in the tips of shoots and roots

Question 6

TRUE or FALSE:
Cell division in animals is best observed during embryonic development.

Answer 6

True

Question 7

It refers to the non-dividing phase of the cell cycle.

Answer 7

interphase

Question 8

Give the 3 parts of interphase.

Answer 8

• G1-phase
• S-phase
• G2-phase

Question 9

TRUE or FALSE:
The nuclear genetic material doubles during the S-phase but the number of chromosomes remains the same.

Answer 9

True

Question 10

It refers to the dividing phase of the cell cycle.

Answer 10

M-phase

Question 11

Which processes are under the M-phase?

Answer 11

mitosis and cytokinesis

Question 12

It refers to the nuclear division in which equal number of monad chromosomes are distributed to the daughter nuclei.

Answer 12

mitosis

Question 13

It refers to the process of partitioning the cytoplasm to form two daughter cells.

Answer 13

cytokinesis

Question 14

Which stage of cell division is characterized by an apparent nucleus?

Answer 14

interphase

Question 15

Which stage of cell division is characterized by uncoiled and indistinguishable chromosomes?

Answer 15

interphase

Question 16

Which stage of mitosis is characterized by disappearing nucleoli and nuclear membrane?

Answer 16

prophase

Question 17

Which stage of mitosis is characterized by condensing chromatin fibers of chromosomes?

Answer 17

prophase

Question 18

Which stage of mitosis is characterized by the attachment of chromosomes into spindle fibers and alignment at the middle of the cell?

Answer 18

metaphase

Question 19

Which stage of mitosis is characterized by the complete disintegration of the nuclear envelope?

Answer 19

metaphase

Question 20

Which stage of mitosis is characterized by completely condensed dyad chromosomes?

Answer 20

metaphase

Question 21

Which stage of mitosis is characterized by the separation of sister chromatids towards the opposite poles of the cell.

Answer 21

anaphase

Question 22

Which fibers facilitate the movement of chromosomes in mitosis?

Answer 22

spindle fibers

Question 23

Which stage of mitosis is characterized by the uncoiling of chromosomes into chromatic and the reformation of the nuclear envelope.

Answer 23

telophase

Question 24

TRUE or FALSE:
By the time the nuclei have formed in telophase, cytokinesis has already started.

Answer 24

True

Question 25

In plant cell division, it refers to the structure which later becomes the middle lamella.

Answer 25

cell plate

Question 26

It refers to the constriction formed in the plasma membrane during cytokinesis.

Answer 26

cleavage furrow

Question 27

Give the formula for mitotic index.

Answer 27

mitotic index = (number of mitotic cells) / (number of cells examined)