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BAB 1 FORM 5
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1.1 Understanding the classification of microorganisms
Topic 1 Microorganisms And Topic 1 Microorganisms And Their Effects On Living ThingsTheir Effects On Living ThingsTopic 1 Microorganisms And Topic 1 Microorganisms And Their Effects On Living ThingsTheir Effects On Living Things
Science Form 5
Understanding the classification of microorganisms
Method of reproduction
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things
A microorganism is an organism that is microscopic and is invisible to the naked eye.
Size
Structure
Method of Nutrition
Habitat
Microorganisms are classified based on their
Autotrophic : Make own food ( Contain chloroplast to synthesis own food through photosynthesis)
Parasitic : Feed on the cells of other living things
Saprophytic : Feed on dead organisms
Science Form 5
Classification of microorganisms
Virus Protozoa
Algae
Fungi
Bacteria
Classification ofmicroorganisms
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things Science Form 5
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things
Bacteria
Flagellum Cytoplasm
Nucleus material (DNA)
Glycogen granulesCapsule
Cell wall
Science Form 5
Spiral Comma
Spherical Rod
Shapes of bacteria
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things Science Form 5
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things
Characteristics of bacteria
Unicell
Size : 0.5 m – 10 m
Method of reproduction : Binary fission
Shapes : Spherical, rod, spiral, comma
Habitat : Wet places, soil, air, plants and animals
Structure : Capsule, cytoplasm, flagella, cell wall, nucleoid, ribosomes.
Nutrition : Parasites, saprophytes, autotrophic
When condition unsuitable, some bacteria formed spore
Science Form 5
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things
Bacteria cell grows Genetic material in nucleus is copied
Genetic material pullapart
Two identical cell pulls apart Cell pinches off
Reproduction Of Bacteria By Binary Fission
Science Form 5
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things
Fungi
Glycogen granule
Cytoplasm
Vacuole
Cell wall (Chitin)
Nucleus
Cell membrane
SporesBread
Hypha
Sporangium
Mycelium
Buds
Yeast Mucor
Science Form 5
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things
Characteristics of fungi
Unicell – yeast
Multicell – mucor
Size : 10 m – 100 m
Method of reproduction : Spores(mucor) and budding (yeast)
Habitat : Wet and dark places
Nutrition : Saprophytism, parasitism
Science Form 5
Protozoa
Plasma membrane
Ectoplasm
Endoplasm
Pseudopodium
Nucleus Food
vacuole
Micronucleus
Oral groove
Macronucleus
Food vacuole
Cilia
Contractile vacuole
Contractile vacuole
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things Science Form 5
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things
Characteristics of protozoa
Unicell
Size : 5 m – 250 m
Method of reproduction : Binary fission (amoeba) and conjugation (paramecium)
Shapes : spherical, oval, round, spindle-shaped and irregular
Habitat : water and soil
Nutrition : Parasites, saprophytes, autotrophic
Science Form 5
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things
Tadpole shapeBacteriophage
Rod shapeTobacco mosaic
Spherical shapePoliomyelietis
Spherical shapeAIDS
Virus
Science Form 5
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things
Characteristics of virus
Smallest microorganisms
Size : 0.02 m – 0.4 m
Method of reproduction : Reproduce in living cell so called as a host
Shapes : Spherical,rod and tadpole
Habitat : Living cells
Nutrition : Parasites
Science Form 5
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things
How a virus reproduces in a host cell
Stage 1A virus attached itself to a hostcell such as a bacterial cell and injects its genetic material (DNA) intothe host cell.
Stage 3New viruses are formed.
Stage 2The genetic material of the virususes the material in the host cellto reproduce.
Stage 4The new viruses burst the hostcell and release themselves. Theburst host cell dies.
Science Form 5
Round shapeChlamydomonas
Filamentous shapeSpirogyra
Oval shapePhytoplankton
Round shapePleurococcus
Algae
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things Science Form 5
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things
Characteristics of algae
Simple aquatic plants that make their own food through photosynthesis
Size : 1 m – 10 000 m
Method of reproduction : Binary fission, spores formation, fragmentation and conjugation
Shapes : Round, filamentous, oval.
Habitat : Fresh water, wet soil and trees.
Nutrition : Autotrophic
Science Form 5
Understanding The Classification Of Microorganisms
Topic 1 Microorganisms and Their Effects On Living Things
Summary of the characteristics of microorganisms
Algae Fungi Virus
Size1m –
10000m10m-100m
Habitat
Reproduction Binary fission
Conjugation
Fragmentation
Spores
BuddingLiving cells
•Fresh water•tree•damp soil
wet/darkplaces
0.02m-0.4m
Living cells
Nutrition Autotrophic
Parasitic
Saprophytic
Protozoa
5m-250m
Watersoil
Bacteria
0.5m – 10m
•soil, air•plant•animal
Science Form 5