Biology
- Revision Notes
EAL Biology revision Sheet. This is not to be used on its own, but in conjunction with your notes, experiments, textbook and blog. Scientific MethodYou should be able to: · Identify variables · ...
- Ecology Revision
Ecology The following are some points to help you, it does not contain everything! You must revise on your own making summary notes and diagrams to help you. You have your notes, this web and your text book to help you. Please use all of these resources,...
- # 67 Summary Of Ecology
1 A habitat is a place where an organism lives. The niche of an organism is the role that it plays in the community.2 A population is a group of organisms of the same species, living in the same place at the same time, that can interbreed with one another....
- # 66 The Nitrogen Cycle
Living organisms need nitrogen because nitrogen atoms are an essential part of proteins, nucleic acids and ATP. The air contains about 78% nitrogen gas. However, this is in the form of nitrogen molecules, in which two nitrogen atoms are held together...
- #7.1 Biological Molecules - Syllabus 2015
? Structure of carbohydrates, lipids and proteins and their roles in living organisms ? Water and living organisms Learning Outcomes Candidates should be able to: (a) [PA] carry out tests for reducing and non-reducing sugars (including using colour...
Biology
#64.1 Ecology Syllabus 2015
? Levels of ecological organisation
? Energy flow through ecosystems
? Recycling of nitrogen
Learning Outcomes
Candidates should be able to:
(a) define the terms habitat, niche, population, community and ecosystem and be able to recognise
examples of each ;
(b) explain the terms autotroph, heterotroph, producer, consumer and trophic level in the context of food chains and food webs ;
(c) explain how energy losses occur along food chains and discuss the efficiency of energy transfer
between trophic levels;
(d) describe how nitrogen is cycled within an ecosystem, including the roles of nitrogen-fixing bacteria (e.g. Rhizobium) and nitrifying bacteria (Nitrosomonas and Nitrobacter);
(e) use the knowledge gained in this section in new situations or to solve related problems.
Note: An ecosystem should be studied in relation to an area familiar to the candidates.
? Energy flow through ecosystems
? Recycling of nitrogen
Learning Outcomes
Candidates should be able to:
(a) define the terms habitat, niche, population, community and ecosystem and be able to recognise
examples of each ;
(b) explain the terms autotroph, heterotroph, producer, consumer and trophic level in the context of food chains and food webs ;
(c) explain how energy losses occur along food chains and discuss the efficiency of energy transfer
between trophic levels;
(d) describe how nitrogen is cycled within an ecosystem, including the roles of nitrogen-fixing bacteria (e.g. Rhizobium) and nitrifying bacteria (Nitrosomonas and Nitrobacter);
(e) use the knowledge gained in this section in new situations or to solve related problems.
Note: An ecosystem should be studied in relation to an area familiar to the candidates.
- Revision Notes
EAL Biology revision Sheet. This is not to be used on its own, but in conjunction with your notes, experiments, textbook and blog. Scientific MethodYou should be able to: · Identify variables · ...
- Ecology Revision
Ecology The following are some points to help you, it does not contain everything! You must revise on your own making summary notes and diagrams to help you. You have your notes, this web and your text book to help you. Please use all of these resources,...
- # 67 Summary Of Ecology
1 A habitat is a place where an organism lives. The niche of an organism is the role that it plays in the community.2 A population is a group of organisms of the same species, living in the same place at the same time, that can interbreed with one another....
- # 66 The Nitrogen Cycle
Living organisms need nitrogen because nitrogen atoms are an essential part of proteins, nucleic acids and ATP. The air contains about 78% nitrogen gas. However, this is in the form of nitrogen molecules, in which two nitrogen atoms are held together...
- #7.1 Biological Molecules - Syllabus 2015
? Structure of carbohydrates, lipids and proteins and their roles in living organisms ? Water and living organisms Learning Outcomes Candidates should be able to: (a) [PA] carry out tests for reducing and non-reducing sugars (including using colour...