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Cells - Coggle Diagram
Cells
Rough endoplasmic reticulum
appears rough due to the ribosomes attached to its outer surface
a flat network of flattened spaces lined with a membrane
the outer surface is continuous with the nuclear envelope
it transports ribosomes to the Golgi apparatus
nucleus
surrounded by nuclear envelope
controls cell activities
essential for cell division
contains nucleoli and chromatin
nucleolus plays a part in making proteins
chromatin is a network of threadlike structures that controls cell activities and is made up of DNA
Cell surface mambrane
selectively permeable
controls the substances leaving and entering the cell
encloses the entire cell
smooth endoplasmic reticulum
no ribosomes attached
synthesises substances such as fats and steroids
involved in detoxification
Golgi apparatus
consist of flattened spaces surrounded by membranes
modifies substances made by rer
stores and packages the substances in vesicles for secretion out of the cell
mitochondrion
performs aerobic respiration
oxidies food to release energy
the energy may be used to perform cell activities
cell wall
plant cell only
made of cellulose and is fully permeable
protects the cell from injuries and gives the cell a regular shape
ribosomes
small round structures that either attach to the rer or lie freely in the cytoplasm
created by nucleolus
synthesise proteins
cytoplasm
most cell activities occur here
contains organelles
chloroplasts
only in plants
contains chlorophyll that is essential for pholtosynthesis
vacuole
plant: large central cell containing cell sap enclosed by tonoplast
animal: many small vacuoles containing food substances and water
