Biology
- Eukaryotic Cells
Cell Webquest ? Ms. Carter Eukaryotic Cells California Standard: Cell Biology 1.a, e, f, g CELL BIOLOGY 1 a. The fundamental life processes of plants and animals depend on a variety of chemical reactions that occur in specialized areas of the organism?s...
- #2.2. Cell Structure - Syllabus 2016
1.1 The microscope in cell studies1.2 Cells as the basic units of living organisms All organisms are composed of cells. Knowledge of their structure and function underpins much of biology. The fundamental differences between eukaryotic...
- #2.1. Cell Structure - Syllabus 2015
? The microscope in cell studies ? Cells as the basic units of living organisms ? Detailed structure of typical animal and plant cells, as seen using the electron microscope ? Outline functions of organelles in plant and animal cells ? Characteristics...
- Orgin Of Eukaryotes
News feature article on the Orgin of Eukaryotes Cells BREAKING NEWS: We have discovered the ancestors of the eukaryote cells. The Eukaryotic cells wasn't the earliest form of cell, but originated from it's ancestor the prokaryotic cells. There...
- The Evolution Of Cooperation
Biology concepts ? biological timeline, serial endosymbiosis, endocystosis, evolution Taxonomy, the placing of species in different groups based on their characteristics, changeseveryday ? literally everyday ? organisms are placed in different groups...
Biology
endosymbiosis
Term: endosymbiosis
Literally meaning: " living together inside?
Origin: Anc Greek
????-/endo-(= compining form for ?inside?, ?internal?, ?within?)
?????????/symbiosis(=living toghether)
>???/syn(=together, with) + ????/vios(=life)
Coined/History
Three biologists stand out in the history of the theory of endosymbiosis. At first in 1905, Russian scientist Konstantin Merezhkovsky (1855-1921) coined the term ?symbiogenesis? to describe ?the living together of different kinds of organisms?. In the 1920s American biologist Ivan Wallin (1883-1969) again proposed in his book ?Symbionticism and the Origin of Species?, that organelles such as chloroplasts and mitochondria originated as symbiotic bacteria. This idea was resuscitated by American biologist Lynn Margulis (1938- ) in 1967. She also proposed that organelles such as mitochondria living inside of nucleated cells evolved from ancient independent-living bacteria. ?The crucial piece of evidence unavailable to Wallin until just before he died,? writes Margulis, ?was the discovery that mitochondria and plastids possess their very own DNA. Wallin knew though that mitochondria and plastids tend to reproduce at different times than do the cells in which they reside?as if demonstrating a residual impulse of their earlier, wilder days.?
Sourses
- Lynn Margulis, Dorion Sagan: ?What Is Life??
University ofCalifornia - Sorin Sonea, Leo Mathieu: ?Prokaryotology: A Coherent View.? Les Presses De L'universite De
Montreal
Definition
The theory which supports that certain organelles as mitochondria and chloroplasts originated as free-living procaryotes that were taken inside another cell giving rise to the first eukaryotic cells.
- Eukaryotic Cells
Cell Webquest ? Ms. Carter Eukaryotic Cells California Standard: Cell Biology 1.a, e, f, g CELL BIOLOGY 1 a. The fundamental life processes of plants and animals depend on a variety of chemical reactions that occur in specialized areas of the organism?s...
- #2.2. Cell Structure - Syllabus 2016
1.1 The microscope in cell studies1.2 Cells as the basic units of living organisms All organisms are composed of cells. Knowledge of their structure and function underpins much of biology. The fundamental differences between eukaryotic...
- #2.1. Cell Structure - Syllabus 2015
? The microscope in cell studies ? Cells as the basic units of living organisms ? Detailed structure of typical animal and plant cells, as seen using the electron microscope ? Outline functions of organelles in plant and animal cells ? Characteristics...
- Orgin Of Eukaryotes
News feature article on the Orgin of Eukaryotes Cells BREAKING NEWS: We have discovered the ancestors of the eukaryote cells. The Eukaryotic cells wasn't the earliest form of cell, but originated from it's ancestor the prokaryotic cells. There...
- The Evolution Of Cooperation
Biology concepts ? biological timeline, serial endosymbiosis, endocystosis, evolution Taxonomy, the placing of species in different groups based on their characteristics, changeseveryday ? literally everyday ? organisms are placed in different groups...