BIO note
CHAPTER 1 : A LOCAL ECOSYSTEM
What is an ecosystem?
Characteristics?
The size of a population of organisms?
Factors for this variation?
Environmental factors?
An ecosystem is any environment containing living organisms that interact with each other and with the non-living parts of the environment.
Largely self-sustaining. - materials and energy are exchanged via food webs. - any size. (eg. a pond, a forest, a desert or a piece of bushland.)
Does not remain constant - increased or decline dramatically
Increasing human activity and interference (eg. The clearing of vast area of forests and woodlands for agriculture) - disease, predation, competition, availability of resources
Vocabulary : self-sustaining: Dramatically:
Interference:
Predation
Bushland
interaction:
Distribution:
Abiotic & biotic:
- able to provide for your own needs without help from others
- something happens suddenly and is very noticeable and surprising.
- unwanted or unnecessary involvement in something
- a relationship between predator and prey
- naturally vegetated areas (covered with plants), especially of Australia
- work together or affect by each other
- how much of it there is in each place or at each time
- non-living things / living thins
+
PHOTOSYNTHESIS AND RESPIRATION
What is photosynthesis?
What is respiration?
Relationships ?
The process by which plant cells capture energy from sunlight and use it to combine carbon dioxide and water to make sugars and oxygen.
6CO2 + 12H2O C6H12O6 + 6O2+6H2O
Carbon dioxide + water sugar + oxygen
The process by which cells obtain energy. (organic molecules, particularly sugars, are broken down to produce carbon dioxide and water, and energy is released)
Glucose + oxygen carbon dioxide + water +energy
Energy from the sun is incorporated into the products of photosynthesis, which are used by plants. When animals
What is an ecosystem?
Characteristics?
The size of a population of organisms?
Factors for this variation?
Environmental factors?
An ecosystem is any environment containing living organisms that interact with each other and with the non-living parts of the environment.
Largely self-sustaining. - materials and energy are exchanged via food webs. - any size. (eg. a pond, a forest, a desert or a piece of bushland.)
Does not remain constant - increased or decline dramatically
Increasing human activity and interference (eg. The clearing of vast area of forests and woodlands for agriculture) - disease, predation, competition, availability of resources
Vocabulary : self-sustaining: Dramatically:
Interference:
Predation
Bushland
interaction:
Distribution:
Abiotic & biotic:
- able to provide for your own needs without help from others
- something happens suddenly and is very noticeable and surprising.
- unwanted or unnecessary involvement in something
- a relationship between predator and prey
- naturally vegetated areas (covered with plants), especially of Australia
- work together or affect by each other
- how much of it there is in each place or at each time
- non-living things / living thins
+
PHOTOSYNTHESIS AND RESPIRATION
What is photosynthesis?
What is respiration?
Relationships ?
The process by which plant cells capture energy from sunlight and use it to combine carbon dioxide and water to make sugars and oxygen.
6CO2 + 12H2O C6H12O6 + 6O2+6H2O
Carbon dioxide + water sugar + oxygen
The process by which cells obtain energy. (organic molecules, particularly sugars, are broken down to produce carbon dioxide and water, and energy is released)
Glucose + oxygen carbon dioxide + water +energy
Energy from the sun is incorporated into the products of photosynthesis, which are used by plants. When animals