Five Kingdom Classification
FIVE KINGDOM CLASSIFICATION
Biological System of Classification • Organisms are first divided into a few kingdoms • Phylum or division is made up of several classes • Classes are made up of orders • Within each order there is a family • Each family consists of a varying number of genus • A genus usually has several species. Organisms within the species can breed
PROCARYOTAE KINGDOM
Prokaryote
• Also called as bacteria, these as believed to be the most abundant organisms on earth • Many believed that they are the first forms of life on earth • Most of them are tiny. Smaller than human cells • They always contain DNA • Microbiology is the study of micro-organisms
Reproduction of Bacteria • They reproduce by the use of binary fission in which a new cell is formed by the division of a mother cell
Types of Bacteria • Coccus – spherical, globular • Baccilus – rod shaped • Spirilum – corkscrew
Capsule
• A bacteria is surrounded by a thick slime layer called capsule • The purpose of the capsule is to protect the bacteria from anything that can kill it
Factors that affect growth of bacterias • Enough food • Moisture • Darkness
Beneficial Bacteria • The bacteria that is in our body is not called as bacteria, but is called as enzymes ➢ Amylase enzyme – digests carbohydrates (mouth) ➢ Pepsin enzyme – digests meat (stomach) ➢ Renin enzyme – digests dairy (stomach) ➢ Lipase enzyme – digests fats (stomach)
PROTIST KINGDOM
Protozoans
• There are more than 56000 species of this animal-like organism • They are heterotrophic and single celled eukaryotes (heterotrophics are living beings that can produce their own food) • Protozoans means one celled animals • They usually group together and form colonies • They are either free living or parasitic • They are mostly microscopic • They are
Biological System of Classification • Organisms are first divided into a few kingdoms • Phylum or division is made up of several classes • Classes are made up of orders • Within each order there is a family • Each family consists of a varying number of genus • A genus usually has several species. Organisms within the species can breed
PROCARYOTAE KINGDOM
Prokaryote
• Also called as bacteria, these as believed to be the most abundant organisms on earth • Many believed that they are the first forms of life on earth • Most of them are tiny. Smaller than human cells • They always contain DNA • Microbiology is the study of micro-organisms
Reproduction of Bacteria • They reproduce by the use of binary fission in which a new cell is formed by the division of a mother cell
Types of Bacteria • Coccus – spherical, globular • Baccilus – rod shaped • Spirilum – corkscrew
Capsule
• A bacteria is surrounded by a thick slime layer called capsule • The purpose of the capsule is to protect the bacteria from anything that can kill it
Factors that affect growth of bacterias • Enough food • Moisture • Darkness
Beneficial Bacteria • The bacteria that is in our body is not called as bacteria, but is called as enzymes ➢ Amylase enzyme – digests carbohydrates (mouth) ➢ Pepsin enzyme – digests meat (stomach) ➢ Renin enzyme – digests dairy (stomach) ➢ Lipase enzyme – digests fats (stomach)
PROTIST KINGDOM
Protozoans
• There are more than 56000 species of this animal-like organism • They are heterotrophic and single celled eukaryotes (heterotrophics are living beings that can produce their own food) • Protozoans means one celled animals • They usually group together and form colonies • They are either free living or parasitic • They are mostly microscopic • They are