B8 Bioenergetics Photosynthesis
- Created by: Abiravee16
- Created on: 07-11-21 01:32
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- Photosynthesis
- Limiting Factors
- Temperature - The higher the temperature, the more kinetic energy the enzymes will have therefore they will work faster.
- Enzymes denature at 45 degrees and above
- Light Intensity
- Concentration of Carbon Dioxide
- Concentration of Chlorophyll
- Impacts the rate of photosynthesis
- Volume of Water
- Temperature - The higher the temperature, the more kinetic energy the enzymes will have therefore they will work faster.
- Equations
- Word Equation
- Carbon Dioxide + Water (light energy & Chlorophyll) ?> Glucose + Oxygen
- Reactants - Carbon Dioxide + Water
- Carbon Dioxide - one of the raw materials for photosynthesis, taken in through the stomata
- Water - one of the raw materials for photosynthesis, taken in through the roots
- products - glucose + oxygen
- Glucose
- A simple sugar that is formed during photosynthesis
- Starch - an insoluable product stored in roots, leaves, and stems
- Minerals - for cell growth and repair
- Protein synthesis - glucose is used to make amino acids for making proteins
- Nitrate ions - a mineral taken in through the plants roots and used to change glucose from photosynthesis into amino acids for protein synthesis
- Magnesium ions - making chlorophyll
- Lipids - fats and oils stored as seeds
- Cellulose - glucose is used to make this substance which is used to provide strength and is found in the cell wall of plant cells
- Oxygen - a waste product of photosynthesis, excreted through the stomata
- Glucose
- Symbol Equation
- 6CO2 + 6H2O --> C6H12O6 + 6O2
- Word Equation
- Endothermic reaction
- Requires a transfer of energy from the environment
- Leaf Cells
- Xylem cells - transorts water
- Phloem cells - tranports food
- Palisade cells - Found near the top of the leaf and contain many chloroplasts (to absorb maximum light).
- Upper Epidermis - Thin, transparent cells to allow sunlight to the palisade cells below them
- Spongy mesophyll layer - Air spaces between the cells allow efficient diffusion of gases between stomata and palisade cells
- Guard cells - Open and close to regulate gas exchange by the stomata
- Lower Epidermis Stomata - To allow gas exchange of CO2 and O2 by diffusion to/from the air.
- Palisade mesophyll layer
- In the chlorophyll stored in chloroplast in leaves
- Limiting Factors
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