Grade 7 - Cells, Functions of Organels

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Transcript of Grade 7 - Cells, Functions of Organels

Page 1: Grade 7 - Cells, Functions of Organels

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Organelles

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Outer membrane of cell that controls movement in and out of the cell

Double layer

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Most commonly found in plant cells & bacteria

Supports & protects plant cells

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To control cell activities

Separated from cytoplasm by nuclear membrane

Contains genetic material - DNA

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Surrounds nucleus Made of two layers Openings allow

material to enter and leave nucleus

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Inside nucleus Contains RNA to build proteins

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Gel-like mixture Surrounded by

cell membrane Contains

material for cell metabolism

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Moves materials around in cell Smooth ER: lacks ribosomes => the place of fats

synthesis Rough ER : ribosomes embedded in surface => to

transport protein package to other organelles

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Each cell contains thousands

The place of protein synthesis

Found on ribosomes & floating throughout the cell

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Produces energy through chemical reactions – breaking down fats & carbohydrates

Controls level of water and other materials in cell

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Protein 'packaging'

Move materials within and out of the cell

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Digestive organelle for proteins, fats, and carbohydrates

Transports undigested material to cell membrane for removal Cell breaks down if lysosome explodes

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Membrane-bound sacs for storage, digestion, and waste removal

Contains water solution

Help plants maintain shape

a place to store food reserves

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Play a role in cell reproduction

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Usually found in plant cells Contains green chlorophyll Where photosynthesis takes place

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To control movement in and out of the cell

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Supports & protects plant cells2

To control cell activities3

Openings allow material to enter and leave nucleus

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Contains RNA to build proteins 5

Contains material for cell metabolism

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The place of fats synthesis7

Cell membrane

Cell wall

Nucleus

Nuclear membrane

Nucleolus

Cytoplsm

Smooth ER

To transport protein package to other organelles

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The place of protein synthesis9

To produce energy10

Move materials within and out of the cell

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Digestive organelle for proteins, fats, and carbohydrates

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a place to store food reserves13

Play a role in cell reproduction14

Ribosome

Mitochondrion

Golgi apparatus

Lysosome

Vacuoles

Centrosome

Photosynthesis takes place15

Chloroplast

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To control movement in and out of the cell

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Supports & protects plant cells

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To control cell activities

3

Openings allow material to enter and leave nucleus

4

Contains RNA to build proteins

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Contains material for cell metabolism

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The place of fats synthesis

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To transport protein package to other organelles

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The place of protein synthesis

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To produce energy

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Move materials within and out of the cell

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Digestive organelle for proteins, fats, and carbohydrates

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a place to store food reserves

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Play a role in cell reproduction

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Photosynthesis takes place15