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
