Question

if a plant has access to plenty of carbon dioxide and water but is moved into a completely dark room, what is the most likely outcome for the photosynthesis reaction?
the plant would use oxygen and glucose as reactants instead.
the reaction would continue, but at a much slower rate.
the production of glucose and oxygen would stop.
the plant would start making more carbon dioxide.

Explanation:

Step1: Understand photosynthesis requirements

Photosynthesis requires light, carbon dioxide, water.

Step2: Analyze the given condition

The plant is in a completely dark room. Light is essential for the light - dependent reactions of photosynthesis. Without light, the electron transport chain (which is part of the light - dependent reactions) cannot occur. This affects the production of ATP and NADPH.

Step3: Consider the impact on the Calvin cycle (light - independent reactions)

The Calvin cycle (which produces glucose) requires ATP and NADPH from the light - dependent reactions. Since there is no light, there is no production of ATP and NADPH.

Step4: Determine the outcome

The production of glucose and oxygen (which are products of photosynthesis) would stop.

Answer:

The production of glucose and oxygen would stop.