OCR Biology F214:Photosynthesis Part 1
- Created by: Ruby
- Created on: 12-11-12 00:02
The Importance of photosynthesis
From 4.2.1 a-d
ü Define the term: autotrophs and heterotrophy
ü State that the light energy is used during photosynthesis to produce complex organic molecules
ü Explain how the respiration in plants and animals depend upon the products of photosynthesis
ü State that in plants photosynthesis is a two stage process taking place in the chloroplast
Sooo….What is an Autotrophs?
· -Definition: An organisms that uses light energy or chemical energy and organic molecules such as carbon dioxide, water molecules to synthesize complex organic molecules
1.Examples of Autotrophs include chemoautotroph’s
· -The first form of Autotrophs were on Earth were chemoautotroph’s, which are prokaryotes that synthesis complex organic molecules, using energy derived from exrginc chemical reactions
· -Examples of chemoautotroph’s are nitrifying bacteria used for recycling nitrogen because they obtain their energy from oxidizing ammonia to nitrate or oxidate nitrite into nitrates
· -Another example of an chemoautotroph are organisms living near darkness, near oceanic vents which supports a very specific food chain for those area
2.Example of a autotrphs are phototrophs
· -Phototrophs are organisms that can photosynthesize, THEY CAN SELF FEEDING FOR PETE SAKE!
· -Their source of energy is sunlight and their raw material is inorganic molecules such as carbon dioxide/water
· -Funnily enough, Majority of photoautotroph’s are the food chains of the Earth
· -Examples: Plants, some bacteria and some prototista like algae
Sooo…….What is a…
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