C1.3 - Photosynthesis Flashcards
What is the primary pigment involved in photosynthesis?
Chlorophyll.
What are carotenoids?
Accessory pigments in plants that assist in photosynthesis.
What is the primary pigment in plants?
Chlorophyll a.
How can photosynthetic pigments be separated?
Using chromatography techniques.
What does the action spectrum of photosynthesis show?
The effectiveness of different wavelengths of light in driving photosynthesis, peaking in blue and red regions.
What role do photosynthetic organisms play in rock deposition?
They contribute to the formation of sedimentary rocks like limestone.
What is photolysis of water?
The process where water is split into hydrogen ions, electrons, and oxygen using light energy: $$2H_2O \xrightarrow{\text{light}} 4H^+ + 4e^- + O_2$$.
What is the optimal condition for photosynthesis related to temperature?
It follows a typical enzyme-temperature relationship.
What is the global impact of photosynthesis on the atmosphere?
It has created an oxygen-rich atmosphere over billions of years.
Why is understanding photosynthesis important?
It is crucial for comprehending broader ecological and environmental concepts.
How does photosynthesis affect ocean chemistry?
It influences pH levels and carbon content in oceans.
What are the products of the light-dependent reactions?
ATP and NADPH.
What is the overall equation for photosynthesis?
$$6CO_2 + 6H_2O + \text{light energy} \rightarrow C_6H_{12}O_6 + 6O_2$$
What factors can limit the rate of photosynthesis?
Light intensity, carbon dioxide concentration, and temperature.
What wavelengths of light does chlorophyll absorb most effectively?
Red light (650-700 nm) and blue light (400-500 nm).
