Cell Cycle and Mitosis(packet thing) Flashcards

(44 cards)

1
Q

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

A

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

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2
Q

What are the two main phases of the cell cycle?

A

The inter phase and the mitotic phase

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3
Q

What is the phase between times when a cell is dividing

A

Interphase

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4
Q

What is occurring in a cell during interphase?

A

carrying out normal, metabolic, function.

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5
Q

What is occurring in a cell during mitosis phase?

A

Cell division

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6
Q

Name three things that form during cell cycle

A

Hair, skin, blood cells.

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7
Q

What process never occurs in interphase?

A

cell division

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8
Q

What do cells copy during interphase

A

Their chromatids

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9
Q

Where are chromatids found?

A

nucleus

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10
Q

In what phase do most cells spend their lifetime?

A

interphase

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11
Q

How often do human skin cells divide each day

A

once a day

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12
Q

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

A

22hrs

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13
Q

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

A

nerve cell

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14
Q

What are the three stages of interphase

A

G1, S phase, and G2

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15
Q

What is G1

A

Growth 1- cell creates organelles and starts metabolism

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16
Q

What is S stage

A

DNA synthesis and chromosomes copied

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17
Q

What is G2

A

Cell growth in preperation for division

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18
Q

What stage of the cycle do cells sometimes exit?

19
Q

what is G0?

A

Cells are alive and metabolically active but do not divide.

20
Q

Examples of G0

A

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

21
Q

What is cytokinesis

A

division of the cytoplasm

22
Q

what stage occurs after cytokinesis

23
Q

What are these two new cells called?

A

daughter cells- identical

24
Q

What cell structures are made in G1

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
31
What is the final and shortest phase of interphase
G2
32
How long would a typical cell be in G2 phase
4-5 hrs
33
How is cell prepared for mitosis in g2
Growth and Enzymes are produced
34
What follows the g2 phase
mitosis
35
What part of the cell is dividing in mitosis
Nucleus+ Dna
36
What is another name for mitosis
karyokinesis
37
When are chromosomes duplicated?
during mitosis
38
What process follows mitosis?
cytokinises
39
What process is used by bacteria to divide and reproduce?
binary fission
40
What are the names of body and reproductive cells
Somatic= body germ= reproductive
41
Name the 4 mitotic stages
Prophase, metaphase, anaphase, telophase.
42
What is unique about genetic material during interphase?
its called chromatin and it is not clearly visible
43
What makes chromosomes become visible during propase?
condensation and coiling
44
What stage are sister chromatids sperated and move to opposite ends?
Anaphase