1.1 Understanding the Classification of Microorganisms

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1.1 Understanding the classification of microorganisms Topic 1 Microorganisms And Topic 1 Microorganisms And Their Effects On Living Things Their Effects On Living Things Science Form 5

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Transcript of 1.1 Understanding the Classification of Microorganisms

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

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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

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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

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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

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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

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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

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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

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Understanding The Classification Of Microorganisms

Topic 1 Microorganisms and Their Effects On Living Things

Tadpole shapeBacteriophage

Rod shapeTobacco mosaic

Spherical shapePoliomyelietis

Spherical shapeAIDS

Virus

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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

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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.

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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

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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

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