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Norlida Azila binti Hussin

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Chapter 2

Cell Structure and Cell Organisation

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2.1 Cell Structure and Function

Cellular components of animal andplant cellsComparison between animal andplant cells.

The density of organelles in specificcells.

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Animal cell

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Plant cell

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Cellular component function

Cell membrane Cell wall

Cytoplasm

Nucleus

Vacuole

Mitochondria

Ribosome

Endoplasmic reticulum

Golgi apparatus

Lysosome

Centriole

Chloroplast

Fill in theblank. Read

the text book& then answer this question.

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Cell membrane

General term-membrane found inside the cell Plasma membrane-encloses the content of a cell Consist proteins and phospholipids

Form a boundary Semi-permeable Act as selective barrier-regulate substance

movements

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Cell wall

Rigid outer layer-encloses whole plant cell Composed of cellulose

Permeable-tiny pores Give shape, mechanical support & protect

plant cell from rupturing due to the

excessive intake of water

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Cytoplasm

Between nucleus and plasma membrane Consist of jelly-like matrix-organelles

suspended Contain organic & inorganic substances &

acts as medium for biochemical reaction

Provide substances obtained fromexternal environment to the organelles.

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Nucleus

Largest, spherical or oval Contain chromosomes, nucleoplasm & nucleolus Double-layered membrane Control centre Chromosomes-genetic information-characteristic

& function

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Vacuole

A large sac containing cell sap &surrounded by tonoplast

Found in plants Contractile vacuole-regulate water content

in freshwater microorganism

Storage place-sugars, amino acids,pigment, waste product etc Support herbaceous plants-not wilt easily

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Mitochondria

Cellular respiration-energy in form ATP(adenosine triphosphates)

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Ribosome

Attach to surface of rough ER Consist ribonucleic acid (RNA) & protein Synthesis protein occur here-information carried

by chromosomes

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Endoplasmic reticulum

Rough ER-ribosome-transport protein Smooth ER-site metabolic reaction incl.

synthesis of lipid & detoxification of drugs &

poisons.

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Golgi apparatus (refer textbook)

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Lysosomes

Refer to textbook.

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Animal cells vs plant cells

refer to Activity 2.2page 20

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The density of organelles in specificcells

The abundance of organelles present in acell varies depending on the type of cellsand their functions.

Refer Activity 2.3 page 21

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Activity 2.2 Similarities-have nucleus, cytoplasm, plasma

membrane, Golgi apparatus, mitochondrian,endoplasmic reticulum

Differences Irregular in shapeoften regular in shape Absent-present No large vacuole/if present: small, numberous &

scattered-large filled with cell sap No chloroplast- chloroplast containing

chlorophyll are present in photosynthetic cells Form glycogen-form starch

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Activity 2.3

1. Mitochondria2. Mitochondria

3. Divide actively to produce new cells4. Mitochondria, Golgi apparatus(secrete

polysaccharides for formation of new cell

walls)5. To carried out photosynthesis6. Chloroplast

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Presentation

Mind mapping Topic: living process in Amoeba sp.

Structure group

Movement 1 Feeding 2 Reproductive 3 Respiration 4Cell specialisation in multicellular organism --5