B4 Mind map (the basics)
This mind map lays out the basis of Module B4 - The Proesses of Life.
It includes:
- Enzymes,
- Diffusion
- Photosynthesis
- Respiration
- Created by: Maddie!
- Created on: 22-11-12 19:11
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- B4
- Diffusion
- Diffusion is the passive overall movement of particles from a region of their higher concnetration to a region of their lower concerntration
- Osmosis
- Osmosis is the overall movement of water from a dilute to a more concentrated solution through a partially permeable membrane
- Active transport
- Active is the overall movement of chemicals across a cell membrane from a region of lower concentration to a region of higher concentration using energy released by respiration
- Enzymes
- Enzymes are proteins that speed up chemical reactions
- 'Lock and Key' model
- Enzymes only speed up one reaction, so a substrate has to be the correct shape to fit into the enzymes actrive site
- Temperature and pH
- At first, the higher the temperature, the faster the reaction but if it gets too hot the reaction time slows down and the active site will become denatured
- If the pH is too high or too low, it interferes with the bonds holding the enzyme together - which denatues the active site
- At first, the higher the temperature, the faster the reaction but if it gets too hot the reaction time slows down and the active site will become denatured
- Respiration
- Aerobic respiration
- This type of respiration uses oxygen and produces lots of energy, and we use it most of the time
- Anaerobic respiration
- This type of respiration does not use oxygen and releases short bursts of energy when the body can't provide oxygen to our muscles
- Aerobic respiration
- Photosynthesis
- Photosynthesis is a series of chmical reactions that uses energy from sunlight to produce food
- Diffusion
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