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B8 photosynthesis + B9 Respiration - Coggle Diagram
B8 photosynthesis + B9 Respiration
Respiration
That respiration is an exothermic reaction because it transfers energy to the environment, and that it transfers all the energy needed for living processes.
That aerobic respiration is the process of transferring energy from glucose using oxygen, and that it occurs continuously in living cells.
That the energy transferred from respiration is used by organisms to make larger molecules from smaller ones, active transport, muscle contraction and maintaining body temperature
That most of the reactions of aerobic respiration occur in the mitochondria
Photosynthersis
Key facts
That energy is transferred to chloroplasts from the environment when they absorb light.
That photosynthesis is an endothermic reaction because energy is transferred from the environment
That photosynthesis is carried out by plants and algae to form ‘food’ in the form of glucose
How plants use Glucoes
That the glucose produced during photosynthesis can be used in respiration to release energy.
That some glucose is converted into starch for storage. Starch is compact and insoluble. This means that it does not cause cells to gain or lose water by osmosis
That some glucose is converted into cellulose, which strengthens cell walls. Some is converted into fats and oils, which are often used as energy storage in seeds.
That some glucose is combined with nitrate ions to make amino acids which are then used to synthesise proteins. The nitrate ions must be absorbed from the soil and plants growing in soil low in nitrate have stunted growth.
The rate of photosynthersis
How the rate of photosynthesis can be affected by temperature, the level of carbon dioxide, light intensity, or by the amount of chlorophyll in the plant and know that any of these factors can be the limiting factors (that stops photosynthesis from happening faster).
How to investigate how light intensity affects the rate of photosynthesis in an aquatic plant (Required Practical), and how to calculate the rate of photosynthesis (e.g. by dividing how much oxygen is produced by the time taken to produce it) using the correct unit for rate.
That inverse proportion is when one variable increases as the other one decreases at the same rate.
That the inverse square law is an example of inverse proportion that links together light intensity and the distance between the light source and a plant. The equation is: 1/d^2
Artificially Controlling Plant Growth
That in greenhouses, the factors that affect the rate of photosynthesis can be controlled to increase the rate of photosynthesis, which in turn increases the profit made from the plants.
How to interpret data that relates to the conditions in a greenhouse