PRESENTED BY: PN. SHAMSIDAR BT. RAMLI

INTRODUCTION

ANIMAL CELLS

PLANT CELLS

MICROSCOPE

QUESTIONS

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.

INTRODUCTION

ANIMAL CELLS

PLANT CELLS

MICROSCOPE

QUESTIONS

ANIMAL CELLS

Nucleus

Cytoplasm

Cell membrane

Control the movement of materials in and out of the cell

Funtions as control centre of the cell

Chemical reaction takes place here in which new substances are formed by giving out or taking in energy

INTRODUCTION

ANIMAL CELLS

PLANT CELLS

MICROSCOPE

QUESTIONS

PLANTS CELL

Cell wall

Cell membrane

Cytoplasm Nucleus

Vacuole

Chloroplasts

Starch grains

Cell sap

chromosomes

INTRODUCTION

ANIMAL CELLS

PLANT CELLS

MICROSCOPE

QUESTIONS

PLANTS CELLS FUNCTIONS

1. Nucleus • Functions as control centre of the cell

2. Cytoplasm • Chemical reaction takes place here in

3. Cell membrane• Control the movement of materials in and out of the cell

4. Cell wall• Gives it regular shape, supports and holds the cell

INTRODUCTION

ANIMAL CELLS

PLANT CELLS

MICROSCOPE

QUESTIONS

PLANTS CELLS FUNCTIONS

6. Starch grains • Store food

5. Chloroplasts • Contains chlorophyll, a substance needed in photosynthesis

INTRODUCTION

ANIMAL CELLS

PLANT CELLS

MICROSCOPE

QUESTIONS

Differences between an animal cell and plant cell

Animal Cell 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 chloroplasts

Has many small vacuoles Has a large vacuoles

Has no stored food Has stored food in the form of starch grains

INTRODUCTION

ANIMAL CELLS

PLANT CELLS

MICROSCOPE

QUESTIONS

MICROSCOPE

INTRODUCTION

ANIMAL CELLS

PLANT CELLS

MICROSCOPE

QUESTIONS

PARTS OF MICROSCOPEParts of microscope Function

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

INTRODUCTION

ANIMAL CELLS

PLANT CELLS

MICROSCOPE

QUESTIONS

Questions

Answer : B

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

INTRODUCTION

ANIMAL CELLS

PLANT CELLS

MICROSCOPE

QUESTIONS

QUESTIONS

Answer : C

2. The vacuole in a plant cell is filled with

A. chlorophyll

B. water

C. cell sap

D. chromosomoes

INTRODUCTION

ANIMAL CELLS

PLANT CELLS

MICROSCOPE

QUESTIONS

QUESTIONS

3. The diagram below shows a typical animal cell. Name the parts of the diagram labelled P, Q, R, S and T.

P - nucleus

Q - chromosomes

R - cytoplasm

S - vacuole

Answer :

T – cell membrane

INTRODUCTION

ANIMAL CELLS

PLANT CELLS

MICROSCOPE

QUESTIONS

QUESTIONS

b) Gives it regular shape, supports and holds the cell

cell wall

c) controls all the activities in the cell.

starch grains

a) stores food

nucleus

4. Name the part of a plant cell that

INTRODUCTION

ANIMAL CELLS

PLANT CELLS

MICROSCOPE

QUESTIONS

QUESTIONS

a) Has no cell wall

b) Has no chloroplasts

c) Has no starch grains

THE END

5. Give four differences between an animal cell an a plant cell

d) Has no vacuole