Which of the following is a false statement about photosynthesis? a. During the light-independent reactions, electrons and ATP from the light reactions combine with atmospheric carbon dioxide to produce sugars; b. The light-independent reactions take place in the chloroplast stroma; c. Oxygen produced during the light-independent reactions is released into the atmosphere; d. Chlorophyll absorbs blue and red light and reflects green light; e. The end product of photosynthesis is a carbohydrate such as glucose.

Key Concepts

Photosynthesis Overview

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy, specifically glucose, using carbon dioxide and water. This process occurs primarily in the chloroplasts of plant cells and involves two main stages: the light-dependent reactions and the light-independent reactions (Calvin cycle).

Light-Dependent and Light-Independent Reactions

The light-dependent reactions occur in the thylakoid membranes of chloroplasts, where sunlight is captured to produce ATP and NADPH, releasing oxygen as a byproduct. The light-independent reactions, or Calvin cycle, take place in the stroma, utilizing ATP and NADPH to convert carbon dioxide into glucose. Understanding the distinction between these two stages is crucial for analyzing statements about photosynthesis.

Role of Chlorophyll

Chlorophyll is the green pigment found in chloroplasts that plays a vital role in photosynthesis by absorbing light energy, primarily in the blue and red wavelengths, while reflecting green light. This absorption of light energy is essential for driving the light-dependent reactions, which ultimately contribute to the synthesis of carbohydrates during photosynthesis.