Cell Cycle and Mitosis(packet thing) Flashcards Preview

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Flashcards in Cell Cycle and Mitosis(packet thing) Deck (44)
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1

What is meant by the cell cycle or cell division cycle?

Series of events that occur in a eukaryotic cell between its formation and replication.

2

What are the two main phases of the cell cycle?

The inter phase and the mitotic phase

3

What is the phase between times when a cell is dividing

Interphase

4

What is occurring in a cell during interphase?

carrying out normal, metabolic, function.

5

What is occurring in a cell during mitosis phase?

Cell division

6

Name three things that form during cell cycle

Hair, skin, blood cells.

7

What process never occurs in interphase?

cell division

8

What do cells copy during interphase

Their chromatids

9

Where are chromatids found?

nucleus

10

In what phase do most cells spend their lifetime?

interphase

11

How often do human skin cells divide each day

once a day

12

How many hours per day is a human skin cell in interphase

22hrs

13

What type of cell may spend decades in interphase instead of dividing?

nerve cell

14

What are the three stages of interphase

G1, S phase, and G2

15

What is G1

Growth 1- cell creates organelles and starts metabolism

16

What is S stage

DNA synthesis and chromosomes copied

17

What is G2

Cell growth in preperation for division

18

What stage of the cycle do cells sometimes exit?

G1

19

what is G0?

Cells are alive and metabolically active but do not divide.

20

Examples of G0

Heart, eye and brain cells (unable to be replaced)

21

What is cytokinesis

division of the cytoplasm

22

what stage occurs after cytokinesis

G1

23

What are these two new cells called?

daughter cells- identical

24

What cell structures are made in G1

organelles

25

Why is there a great amount of protein synthesis occuring during G1

because proteins and enzymes are being made

26

What does s phase stand for

Synthesis phase

27

What happens during s phase

replication

28

How do each of the DNA molecules appear in the cromosome

1 DNA double Helix

29

At the end of S phase each chromosome has how many coiled Dna molecules?

2

30

What structure holds the duplicated chromosomes together and is also copied during S phase

Centrosome