2.6 Cell Divison

Question 1

What is cytokinesis?

Answer 1

Cytoplasmic division following nuclear division. Resulting in two new daughter cells

Question 2

Definition of interphase?

Answer 2

Phase of the cell cycle where the cell is not diving
It is subdivided into growth and synthesis phases

Question 3

Mitosis? Definition

Answer 3

Type of nuclear division that produces daughter cells genetically identical to each other and to the parent cell

Question 4

The eukaryotic cell cycle

Question 5

Cells reproduce by duplicating their contents and then splitting

Question 6

into two daughter cells.

Question 7

Early researchers observing cell division under the microscope

Question 8

could easily see the behaviour of chromosomes during mitosis

Question 9

which is nuclear division

Answer 9

followed by cytokinesis or cytoplasmic

Question 10

division

Answer 10

resulting in two daughter cells (see topic 2.6.2).

Question 11

However

Answer 11

nuclear and cytoplasmic division

Question 12

occupy only a small part of the cell cycle (see Figure 1). Between

Question 13

each M phase is an interphase. Interphase

Answer 13

when studied

Question 14

under the microscope

Answer 14

appears to be uneventful. However

Question 15

sophisticated techniques have enabled scientists to learn that

Question 16

during interphase there are elaborate preparations being made for

Question 17

cell division

Answer 17

in a carefully ordered and controlled sequence

Question 18

checkpoints.

Question 19

M

Question 20

M

Question 21

24 hrs

Question 22

Interphase

Question 23

Figure 1 The cell cycle in eukaryotic cells. M indicates the division phase and

Question 24

interphase is divided into G

Answer 24

S and G2. Cells may also enter a Go phase

Question 25

they may undergo differentiation

Answer 25

or apoptosis (programmed cell death) or