Question

unit 3.1 quiz- due 11/24
when cells perform photosynthesis, they transform energy from one form to another. which of the following does not take place during photosynthesis?
-only one of these choices is incorrect.
low - energy carbon molecules, such as co2, are formed.
oxygen is given off as a by - product.
chlorophyll absorbs light from the sun.
chemical energy is stored in the bonds of carbohydrate molecules.

Explanation:

1. In photosynthesis, plants use carbon dioxide ($\ce{CO_2}$) and water to produce glucose (a high - energy carbon molecule) and oxygen. So, low - energy carbon molecules like $\ce{CO_2}$ are used up, not formed, during photosynthesis.
2. Chlorophyll absorbs light from the Sun, which is a key part of the light - dependent reactions of photosynthesis.
3. Oxygen is a by - product of the light - dependent reactions of photosynthesis when water is split.
4. The chemical energy from the Sun is stored in the bonds of carbohydrate (glucose) molecules during the light - independent reactions (Calvin cycle) of photosynthesis.

Answer:

A. Low - energy carbon molecules, such as CO₂, are formed.