Catégories : Tous - bacteria - fungi - virus - archaea

par Maziatul Husna Binti Khairuzaman Il y a 7 années

306

Week1_Introduction_to_Microbiology

Microorganisms, or microbes, are entities that are not visible to the naked eye and comprise various types such as viruses, bacteria, archaea, algae, fungi, and protozoa. Viruses are simple organisms that contain either RNA or DNA and are considered inert outside a host.

Week1_Introduction_to_Microbiology

Week1_Introduction_to_Microbiology

Prokaryotes (Unicellular) vs Eukaryotes (Multicellular)

Ribosome size

70 subunits

80 subunits

Nucleus, Mitochondria, Golgi Apparatus, Endoplasmic reticulum
No

Prokaryote

Yes

Eukaryote

Type of Microbes

Inert biochemical complex (Alive in host/ non-living in environment)

Simple organism: Have RNA/DNA

Very small. Must used electron microscope to see
Acellular
Eukaryotes
Algae

Important in Food chain

Photosynthesis

Cell wall: Cellulose

Unicellular/Multicellular

Singular: Alga

Fungi

Nutrients obtained: By absorption

Reproduce

Produce mold

Have typical mass of mycelia from hyphae

Singular: Fungus

Unicellular(yeast)/Multicellular (Mushroom)

Protozoa

Characteristic

Reproduction

Asexually

Sexually

Found as

Parasites

Free entities

Movement

Cilia

Flagella

Pseudopod

Nutrients obtained: absorption/ingestion from environment

Singular: Protozoan

Prokaryotes
Archaea

Extremophiles (Withstand very extreme temperature)

Thermoacidophiles (Both thermophilic and acidophilic)

Ex: Deinococcus radiodurans aka Conan the Bacterium

Polyexteremophile

Halophiles (Can tolerate saltiness)

Methanogens (reduce CO2 to methane)

Aka Methane-produced bacteria

Chemotrophic (Divert energy from organic and inorganic compound)

Lack in cell wall- peptidoglycan

Ex: Eschericha coli 0157:H7

Virulent stain

Characteristics

Various forms

Various shape

Enclosed genetic material

Naked Genetics

Singular: Bacteria

Unicellular

Importance of Microbiology

Genetic engineering:
Recombine RNA Technology
Produce:
Amino acids
Vitamins
Antibiotics
Reduce waste
As Source of food

Bacteria + Eukaryote vs Archaea + Eukaryote

Archaea + Eukaryote
Component RNA & Protein Synthesis System
Bacteria + Eukaryote
Ester-linked Membrane Lipid

Application

Agriculture
Fertilizer (Effective Microbes)
Enviromental
Bioremedies

Bacteria

Virus

Genetic
GFP (Green Fluorescence Protein)
DNA sequence
Immunology
Cancer Immunology
Industrial
Fuel
Chemical
Food
Yogurt
Cheese
Bread
Medical
Microbial culture
Microscope

Definition

Microbies are organism that are too small to be seen using the naked eye.