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Unit 1 - Chapter 13: The Cell Cycle - Coggle Diagram
Unit 1 - Chapter 13: The Cell Cycle
Cell continuity
refers to living cells arising from living cells of the same type
Chromosomes
: Tightly coiled and highly organised structures of DNA and protein
Haploid
: One set of chromosomes
Gene
: A short region of chromosomes that contain a code for the production of of a protein
Diploid
: Two set of chromosomes
Interphase
: A long period of the cells cycle during which the cell spends most of its life and carries out its everyday activities
Mitosis
: Nuclear division in which the number of chromosomes in the daughter nuclei is the same as the parent nucleus
Cell division (Cytokinesis)
: The process of the whole cell splitting in two
Mitosis And Cell division
Stage 3 Anaphase:
Centromeres holding the chromosomes together break in two
Spindle fibres contract pulling the chromosomes to either pole of the cell
Stage 2 Metaphase:
Chromosomes line up along the
equator
of the cell
Stage 4 Telophase:
Nuclear membrane begins to reform around the chromosome
Spindle fibres dissolve and the cell readies for the next stage of cell division
Cell Division (Cytokinesis)
Cleavage furrow
forms in
animal
cells
Cell plate
forms in
plant
cells
Stage 1 Prophase:
Chromatin
condenses
and becomes
visible
as
chromosomes
.
Duplicated
chromosomes
attach together at the
centromere
releasing chromosomes into cytoplasm.
Spindle fibres originating at centriole
begin to from and attach to the
chromosomes at
points called
centromere
Function of Mitosis
Single-celled:
Reproduction
Multicellular:
Growth and repair
Mitosis
Resulting cells have the
same number of cells
as the
parent cell.
Resulting cells are
genetically identical
to the parent cell.
Two
new cells result.
Cancer
is a group of disorders in which the cells lose control over the rate of mitosis and cell division.
Cancer
can be
caused
by
UV light, cigarette smoke
Meiosis
: Is a type of nuclear division that leads to
4
daughter cells being produced each containing
half
the
number of chromosomes
as the parent cell
Functions:
Sexual reproduction, genetic variation
Meiosis
Resulting cells have
half the number of chromosomes
as the
parent cell.
Resulting cells are
not genetically identical
to the parent cell.
Four
new cells result.