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Cells: The Building Blocks of Life

Learn about cells, the basic units of life, their functions in animals and plants, and the key differences between animal and plant cells. Explore the parts of a microscope and test your knowledge with cell-related questions.

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Cells: The Building Blocks of Life

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  1. CELL IS A UNIT OF LIFE PRESENTED BY: PN. SHAMSIDAR BT. RAMLI

  2. INTRODUCTION What is cell? 1. Cell is the basic unit of living things 2. All living things are made up of one or more cells. 3. The term ‘cell’ was first used by Robert Hooke, a botanist. He observed that cells in a sliced piece of cork and the cells of a honeycomb alike. 4. You need a microscope to observe cells.

  3. ANIMAL CELLS Funtions as control centre of the cell Nucleus Cell membrane Control the movement of materials in and out of the cell Cytoplasm Chemical reaction takes place here in which new substances are formed by giving out or taking in energy

  4. PLANTS CELL Cytoplasm Nucleus Starch grains chromosomes Cell membrane Cell wall Chloroplasts Cell sap Vacuole

  5. PLANTS CELLS FUNCTIONS • Functions as control centre of the cell 1.Nucleus • Chemical reaction takes place here in 2. Cytoplasm • Control the movement of materials in and out of the cell 3. Cell membrane • Gives it regular shape, supports and holds the cell 4. Cell wall

  6. PLANTS CELLS FUNCTIONS 5. Chloroplasts • Contains chlorophyll, a substance needed in photosynthesis 6. Starch grains • Store food

  7. Differences between an animal cell and plant cell

  8. MICROSCOPE

  9. PARTS OF MICROSCOPE

  10. Questions 1. An animal cell has a variable shape because A. It has a very small vacuoles B. Its cell membrane is flexibles C. It does not have chloroplasts D. Its nucleus is small and dence Answer : B

  11. QUESTIONS 2. The vacuole in a plant cell is filled with A. chlorophyll B. water C. cell sap D. chromosomoes Answer : C

  12. QUESTIONS 3. The diagram below shows a typical animal cell. Name the parts of the diagram labelled P, Q, R, S and T. Answer : P - nucleus R - cytoplasm T – cell membrane Q - chromosomes S - vacuole

  13. QUESTIONS 4. Name the part of a plant cell that a) stores food starch grains b) Gives it regular shape, supports and holds the cell cell wall c) controls all the activities in the cell. nucleus

  14. QUESTIONS 5. Give four differences between an animal cell an a plant cell a) Has no cell wall b) Has no chloroplasts c) Has no starch grains d) Has no vacuole THE END

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