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Biology - Coggle Diagram
Biology
Chapter 1: Cell Structure and Organisation
Parts of cells
Cell Membrane
Material made up cell membrane
Lipids
Proteins
Appear as
Partially Permeable Membrane
Purpose
Hence controls the movement of substances
It only
allow some substances
to pass through it
Present in
Animal Cells
Plant Cells
Cell Walls
Material made up cell wall
Cellulose
Appear as
A wall that
enclose
the
entire
plant cell
Fully permeable
Not controlling movement of substances into and out of the cells
Present in
Plant Cells
Purpose
Protects the cell from injury
Give plant cell a fixed shape
Cytoplasm
Appear as
Jelly-like substances
Purpose
Fills the inside of the cell and is enclosed by cell membrane
Where most cell activities occurs
Materials made up cytoplasm
Organelles
Purpose
Performs a specific job within the cell
Structure
Cellular structure that is not visible under light microscope
Present in
Animal cells
Plant cells
Nucleus
Appear as
Surrounded by membrane called nuclear membrane
Purpose
Contains genetic information in the form of chromosomes
Control cell activities such as cell growth and the repair of worn-out parts
Essential for cell-division. Cells without nucleus are unable to divide
Present in
Animal cells
Plant cells
Except for
Specialised cells
such as red blood cell
Parts of nucleus
Nucleus membrane
Purpose
Separates contents of the nucleus from the rest of the cytoplasm
Chromosomes
Made up of
DNA (Deoxyribonucleic acid)
Where heredity information is stored
46 chromosomes in each human body cell
Purpose
Control cell activities