PRESENTED BY PN SHAMSIDAR BT RAMLI INTRODUCTION What

PRESENTED BY: PN. SHAMSIDAR BT. RAMLI

INTRODUCTION What is cell? INTRODUCTION 1. Cell is the basic unit of living things ANIMAL CELLS 2. All living things are made up of one or more cells. PLANT CELLS MICROSCOPE QUESTIONS 9/18/2020 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. 2

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

PLANTS CELL INTRODUCTION ANIMAL CELLS PLANT CELLS Cytoplasm Nucleus Starch grains chromosomes Cell membrane MICROSCOPE QUESTIONS 9/18/2020 Cell wall Chloroplasts Cell sap Vacuole 4

PLANTS CELLS FUNCTIONS 1. Nucleus • Functions as control centre of the cell 2. Cytoplasm • Chemical reaction takes place here in INTRODUCTION ANIMAL CELLS PLANT CELLS 3. Cell membrane MICROSCOPE QUESTIONS 9/18/2020 4. Cell wall • Control the movement of materials in and out of the cell • Gives it regular shape, supports and holds the cell 5

PLANTS CELLS FUNCTIONS INTRODUCTION 5. Chloroplasts • Contains chlorophyll, a substance needed in photosynthesis ANIMAL CELLS PLANT CELLS 6. Starch grains • Store food MICROSCOPE QUESTIONS 9/18/2020 6

Differences between an animal cell and plant cell Animal Cell INTRODUCTION ANIMAL CELLS PLANT CELLS Plant Cell Has an irregular and variable shape Has a regular and fixed shape Has no cellulose cell wall Has a cellulose cell wall Has no chloroplasts Has many small vacuoles Has a large vacuoles Has no stored food Has stored food in the form of starch grains MICROSCOPE QUESTIONS 9/18/2020 7

MICROSCOPE INTRODUCTION ANIMAL CELLS PLANT CELLS MICROSCOPE QUESTIONS 9/18/2020 8

PARTS OF MICROSCOPE Parts of microscope INTRODUCTION Eye piece For looking at specimens Objectives lens Enables greater magnification of a specimen by moving body tube up and down Coarse adjustment For getting a rough focus of specimen Fine adjustment For setting a sharp focus of a specimen Stage A platform to put slides of a specimen Diaphragm For controlling the amount of light to view a specimen Mirror For reflecting light up through the slide on the stage to the eye ANIMAL CELLS PLANT CELLS MICROSCOPE QUESTIONS 9/18/2020 Function 9

Questions INTRODUCTION ANIMAL CELLS PLANT CELLS 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 MICROSCOPE Answer : B QUESTIONS 9/18/2020 10

QUESTIONS 2. The vacuole in a plant cell is filled with INTRODUCTION ANIMAL CELLS A. chlorophyll B. water C. cell sap PLANT CELLS MICROSCOPE D. chromosomoes Answer : C QUESTIONS 9/18/2020 11

QUESTIONS INTRODUCTION 3. The diagram below shows a typical animal cell. Na ANIMAL CELLS PLANT CELLS MICROSCOPE QUESTIONS Answer : P - nucleus R - cytoplasm Q - chromosomes S - vacuole T – cell membrane 12

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

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