1. How does higher rates of CO2 in the atmosphere cause less transpiration?
The chain of water molecules that exit the plant via the stomatat can no longer do so due to the stomata being closed
Respiration is hindered and thus energy is limited for the effort of transpiration
Stomata are permanently closed due to higher amounts of CO2 in the atmosphere
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2. How are the important molecules first made during the light dependent reaction?
By the slitting of a water molecule and light absorption by p680 chlorophyll to give an electron
Light is absorbed to produce excited eletrons that move between complexes
P680 chlorophyll absorbs sunlight to give and electron
3. What does higher rates of photosynthesis mean for the uptake of water?
Stomata are permanently closed due to higher amounts of CO2 in the atmosphere
Higher amounts of CO2 in the atmosphere means high rates of photosynthesis but also means the stomata on leaves (through CO2 diffuses through) are open for less time, and subsequently this results in less uptake of water and transpiration
Speeds transpiration up due to stomata being open for longer time
4. Where does the light independent reaction take place and what is NADPH and ATP used for?
Happens in the stroma of chloroplasts where NADPH and ATP are used for reducing components of the cycle to eventutally make carbohydrates and other organic molecules
Cytoplasm of chloroplasts due to the ribosomes and molecules available in this organelle
Thylakoids due to their large surface area for photosynthesis
5. What happens at photosystem 1 when the knocked off electron arrives there?
Splitting of water and excited electrons caused by p700 chlorophyll recieving light
Further sunlight is absorbed by p700 chlorophyll which causes a boost in energy
By the slitting of a water molecule and light absorption by p680 chlorophyll to give an electron
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