The right answer is A: Enzyme activity decreases at these temperatures
Temperature influences the activity of the enzymes responsible for assisting with chemical reactions in the Calvin cycle. When temperatures are low, enzyme activity is slow. As temperatures increase, the activity of the enzymes that assist in these chemical reactions also increases to a certain extent, which is the optimal response to temperature. It is at this point that the rate of photosynthesis of plants is the highest.
As the temperature continues to rise beyond this point, the enzyme activity decreases until photosynthesis stops. It is important to remember that the rate of photosynthesis in C3 plants is higher in cold conditions, whereas it is the opposite in C4 plants.
Starch Molecules are too big to diffuse into cells.
Answer:
Plants absorb nitrogen from: the soil ( second choice)
Because half of the energy is going into your head to process that half witch then makes you consume the other half for your whole body