C1.3 光合作用（分子）：练习题

What is the primary effect of increasing the concentration of carbon dioxide on the rate of photosynthesis, assuming light and temperature are not limiting?

During chromatography, why do different photosynthetic pigments separate into distinct bands on the paper?

A scientist measures the absorption spectrum of isolated chlorophyll a and chlorophyll b, and then the action spectrum of a whole plant. What observation would confirm that accessory pigments are involved in photosynthesis?

In the light-dependent reactions of photosynthesis, what is the specific role of photolysis?

In the light-dependent reactions of photosynthesis, what is the primary role of water molecules?

Define the term action spectrum and explain its relationship to the absorption spectrum in photosynthesis.

Explain the specific role of \(NADP^+\) during the light-dependent reactions of photosynthesis.

Predict and explain the immediate changes in the concentrations of glycerate-3-phosphate (GP) and ribulose bisphosphate (RuBP) when a plant is moved from a brightly lit environment into total darkness.

a) Distinguish between an absorption spectrum and an action spectrum in the context of photosynthesis.
b) Identify the two specific regions of the visible light spectrum where chlorophyll pigments show the highest percentage of light absorption.

The Calvin cycle represents the light-independent reactions of photosynthesis occurring in the stroma.

a) Outline the process of carbon fixation, including the enzyme and the initial 5-carbon molecule involved.
b) Explain why the products of the light-dependent reactions, ATP and reduced NADP (NADPH), are essential for the production of triose phosphate (TP).
c) State the name of the process that allows the Calvin cycle to continue after the production of triose phosphate.