Photosynthesis: The Key to Life on Earth
Where do the light-dependent reactions of photosynthesis occur?
The light-dependent reactions of photosynthesis occur in the thylakoid membranes of the chloroplasts.
What is needed in the light-dependent reactions?
The light-dependent reactions require water (H₂O) and sunlight as inputs.
What is produced in the light-dependent reactions?
The outputs of the light-dependent reactions are oxygen (O₂) and ATP (adenosine triphosphate).
Answers to the questions about photosynthesis
Based on the information provided in the chart, the light-dependent reactions of photosynthesis occur in the thylakoid membranes of the chloroplasts, and require water (H₂O) and sunlight as inputs. The outputs of the light-dependent reactions are oxygen (O₂) and ATP (adenosine triphosphate), which is a molecule that stores energy for use in other cellular processes.
Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of organic compounds such as glucose (a type of sugar). It is a fundamental process in the biosphere, as it is the primary means by which energy from the sun is captured and converted into a form that can be used by living organisms.
The light-independent reactions, also known as the Calvin cycle or the dark reactions, occur in the stroma of the chloroplasts, and use the ATP and carbon dioxide (CO₂) produced in the light-dependent reactions as inputs. The outputs of the light-independent reactions are sugar (C₂H₂O) and oxygen (O₂), which is released as a byproduct.