Answer:
I'm not sure if this is correct but I think it's C
ATP enters the Calvin Cycle. Glucose (G3P) is a molecule that leaves the cycle.
An organism free of interference from other species could use the full range of conditions. ( biotic and abiotic)
Answer:
Vitamins are used in their original form by the cells. They are either water soluble or fat soluble, hence no enzyme is required to digest vitamins. They are absorbed directly from the digestive tract, transported by blood to the cells, and the cells absorb and use them whenever they need.