Classification of the Animal Kingdom
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A series of free High School Biology Video Lessons. Description of the animal kingdom. Description of the Protist Kingdom. An overview of the Bacteria Kingdom. An introduction to viruses.
Animal Kingdom
Unlike the organisms of the Archaea or Monera Kingdoms, the Animal Kingdom consists of multi-cellular, heterotrophic organisms that feed on other organisms to survive. Some of the characteristics of the animals in this kingdom are being able to develop throughout their lives, move independently and reproducing.
Description of the animal kingdom
Protist Kingdom
The protist kingdom is a classification that includes a diverse group of eukaryotic organisms. Typically, protists reproduce asexually via mitosis and range from unicellular to multicellular organisms. In the protist kingdom, there are two main groups: protozoa (which are generally heterotrophic) and algae (which are generally autotrophic). Organisms in the protozoa group include things like amoebas, slime molds and paramecium while common organisms in the algae group include green algae, brown algae, diatoms and euglena.
Description of the Protist Kingdom
Bacteria Kingdom
The Bacteria Kingdom, formerly called monera, are single celled prokaryotic organisms. Bacteria encompass two domains: eubacteria and archaea. Eubacteria and archaea have very different cell walls. They are also distinguished by their DNA - the DNA of archaea has histone proteins while that of eubacteria does not.
An overview of the Bacteria Kingdom.
Viruses
A virus is a nucleic acid encased in a protein shell and is inactive except within a host cell. Viruses penetrate host cells and inject their genetic information in the form of DNA or RNA. In the lytic cycle, the virus uses the cell's functions to replicate its genetic information and create more viruses. In the lysogenic cycle, the virus leaves its genetic material dormant inside the cell as the cell reproduces until environmental conditions revive it and initiate the lytic cycle.
An introduction to viruses.
More Lessons for Biology
Math Worksheets
A series of free High School Biology Video Lessons. Description of the animal kingdom. Description of the Protist Kingdom. An overview of the Bacteria Kingdom. An introduction to viruses.
Animal Kingdom
Unlike the organisms of the Archaea or Monera Kingdoms, the Animal Kingdom consists of multi-cellular, heterotrophic organisms that feed on other organisms to survive. Some of the characteristics of the animals in this kingdom are being able to develop throughout their lives, move independently and reproducing.
Description of the animal kingdom
The protist kingdom is a classification that includes a diverse group of eukaryotic organisms. Typically, protists reproduce asexually via mitosis and range from unicellular to multicellular organisms. In the protist kingdom, there are two main groups: protozoa (which are generally heterotrophic) and algae (which are generally autotrophic). Organisms in the protozoa group include things like amoebas, slime molds and paramecium while common organisms in the algae group include green algae, brown algae, diatoms and euglena.
Description of the Protist Kingdom
The Bacteria Kingdom, formerly called monera, are single celled prokaryotic organisms. Bacteria encompass two domains: eubacteria and archaea. Eubacteria and archaea have very different cell walls. They are also distinguished by their DNA - the DNA of archaea has histone proteins while that of eubacteria does not.
An overview of the Bacteria Kingdom.
A virus is a nucleic acid encased in a protein shell and is inactive except within a host cell. Viruses penetrate host cells and inject their genetic information in the form of DNA or RNA. In the lytic cycle, the virus uses the cell's functions to replicate its genetic information and create more viruses. In the lysogenic cycle, the virus leaves its genetic material dormant inside the cell as the cell reproduces until environmental conditions revive it and initiate the lytic cycle.
An introduction to viruses.
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