CHAPTER 2:
CELL AS THE BASIC UNIT OF LIFE
2.1 WHAT IS A CELL?
basic unit of living things
microscopic. Only can be
seen by using:-
MICROSCOPE
Cheek cells
Onion cells
STRUCTURE FUNCTION
NUCLEUS control centre
CYTOPLASM medium for chemical reaction
CELL MEMBRANE movement of substance in and out
CELL WALL give definite shape
CHLOROPLAST manufacture their own food
VACUOLES act as a store
COMPARISON BETWEEN ANIMAL CELLS AND PLANT CELLS
SIMILAR
-have nucleus
-have cytoplasm
-have cell membrane
DIFFERENCE
Irregular shape and flexible shape Regular shape and rigid
Not have vacuole vacuole have large vacuole
Not have chloroplast chloroplast have chloroplast
Not have cell wall Cell wall have cell wall
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Cell structure and functions
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SCIENCE FORM 1 CHAPTER 2 (2.1)
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