Cell Cycle and Mitosis(packet thing) Flashcards
(44 cards)
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.
What are the two main phases of the cell cycle?
The inter phase and the mitotic phase
What is the phase between times when a cell is dividing
Interphase
What is occurring in a cell during interphase?
carrying out normal, metabolic, function.
What is occurring in a cell during mitosis phase?
Cell division
Name three things that form during cell cycle
Hair, skin, blood cells.
What process never occurs in interphase?
cell division
What do cells copy during interphase
Their chromatids
Where are chromatids found?
nucleus
In what phase do most cells spend their lifetime?
interphase
How often do human skin cells divide each day
once a day
How many hours per day is a human skin cell in interphase
22hrs
What type of cell may spend decades in interphase instead of dividing?
nerve cell
What are the three stages of interphase
G1, S phase, and G2
What is G1
Growth 1- cell creates organelles and starts metabolism
What is S stage
DNA synthesis and chromosomes copied
What is G2
Cell growth in preperation for division
What stage of the cycle do cells sometimes exit?
G1
what is G0?
Cells are alive and metabolically active but do not divide.
Examples of G0
Heart, eye and brain cells (unable to be replaced)
What is cytokinesis
division of the cytoplasm
what stage occurs after cytokinesis
G1
What are these two new cells called?
daughter cells- identical
What cell structures are made in G1
organelles