Cell Organelles

CentriolesClick icon to add picture

• A pair of small cylindrical structure

• Composed of microtubules

• Involved in the separation of chromosomes during cell division in animal cells and protists

• Not found in plant cell

Chloroplast

Definition

• Found in some plant cells (green organelle)

• Photosynthesis takes place

• Composed of many folded layers of membrane

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Cytoplasm

• the contents of a cell

• It is more than 90% water

• Contain ions, salts enzymes, food molecule and other organelles other than the nucleus.

Cytosol

• The fluid component of cytoplasm

• In which organelles are located

Endoplasmic Reticulum• It is where, where most

reactions takes place

• The cell makes lipids and other chemicals,

• it sometimes has ribosomes attached.

• Involved with the production , processing, transport, and storage of materials with the cell

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Golgi Apparatus

• essential in packaging different products from the endoplasmic reticulum and the ribosomes into their final form.

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Lysosomes

• membrane- bound vesicles

• Containing powerful enzymes that breakdown debris and foreign material

• Found in most animal cell

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Mitochondria

• Composed of many unfolded layers of membrane

• Involved in the energy transformation that release energy

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Nucleus

• Large organelle

• The nucleus is the control centre of the cell

• dictates what all of the other organelles do.

• The nucleus also stores the DNA.

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Image• Encloses the cytoplasm

in all cells

• Controls the movement of substances into and out of the cell

• Responsible for recognition, adhesion and chemical communication between cells

Plasma Membrane

Plastids

• Found only in plant cells

• Which develop from simple organelles called proplast

• Plastids include chloroplast, amyloplasts & chromplast(contain colour pigments)

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Ribosomes

• The nucleus is the control centre of the cell

• dictates what all of the other organelles do.

• The nucleus also stores the DNA Definition

Tonoplast

• Vacuole membrane in plant cells

• Regulates the movement of substances into and out of the vacuole.

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Vacuole

• found in most cells

• Plant cells: have large fluid filled vacuole

• Containing cell sap which support physical support through turgidity and storage

• In other cells vacuole maybe involved in intracellular digestion or water balance

Vesicles

• Membrane –bound organelles

• Often associated with transport in cell

Cell wall

• Found only in PLANT cells

• Gives support to the cell

• Is a second layer or “fence” like the cell membrane.

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Location: All cells

Description: Made of microtubules - microfilaments

Function: Strengthen cell & maintains the shape

Moves organelles within the cell

By Shekofa Jafari 11C

Cytoskeleton