Interpretation:
The purpose of light dependent and light independent reactions of photosynthesis should be given.
Concept Introduction:
Photosynthesis: Plants adopt photosynthesis for production of needed molecules to accomplish growth. They use energy from sun in order to complete reaction between carbon dioxide and water which results in glucose production. It is endergonic reaction since it requires energy for production of glucose
Chlorophyll: The green color of plants is due to presence of chlorophyll pigment which helps in capturing sunlight for energy production.
Adenosine triphosphate ATP: The main job of ATP is to store energy and release it when cell is in need of energy.
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Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
- What are the two places where light energy is required in the light reaction of photosynthesis? Why must energy be supplied at precisely these points?arrow_forwardBriefly explain the light-dependent reactions of photosynthesis: where does this take place, what are the reactants and what is produced?arrow_forwardIn photosynthesis, which of the following is NOT true about the light-dependent (“light”) reaction? In photosynthesis, which of the following is NOT true about the light-dependent (“light”) reaction? Glucose is synthesized from CO2 and water during the light-dependent reaction The light-dependent reaction converts light energy to chemical energy stored in ATP The light-dependent reaction (non-cyclic) captures electrons in NADPH Light-excited electrons in chlorophyll provide the energy for ATP production None of the other four answers (All are true of the light-dependent reaction)arrow_forward
- Which of the following is NOT true of photosynthesis? Light-excited electrons in chlorophyll provide the energy for ATP production The light-independent (“dark”) reaction makes glucose from carbon dioxide (CO2) and water, using energy trapped by the light-dependent reaction The light-dependent reaction captures electrons in NADPH, which are used for glucose synthesis in the light-independent (“dark”) reaction The light-independent (“dark”) reaction converts light energy to chemical energy stored in ATP None of the other four answers (all are true of photosynthesis)arrow_forwardProvide an overview of photosynthesis by describing the purpose of the light and dark reactions. How do the light and dark reaction contribute to photosynthesis? Describe the products and by products of the light reactions and the general concept of the system. What part of the system does the DCPIP substitute?arrow_forward1) The light reactions begin with sunlight striking a photosystem. Which photosystem is this and what happens to the electrons there? 2) What happens to this first photosystem to prepare it to become activated by additional sunlight? 3) Why are there two different photosystems in the light reactions. 4) Where do these electron reside at the end of the Calvin Cycle (dark reactions)?arrow_forward
- In what part of photosynthesis does the first step of light reaction take place?arrow_forwardIn photosynthesis, what is encompassed by the term “light reactions”?arrow_forwardThe Calvin cycle, the "dark reaction" or Carbon fixation reactions of photosynthesis, cannot occur at night in a living plant. Which of the following best describes why this is true? A) The stomata are incapable of opening at night, thus CO2 cannot enter the leaf B) The reactions of the Calvin cycle are dependent on light reactions for high-energy compounds C) Several enxymes necessary for Calvin cycle activity have been degraded during the day and must be replaced D) Light is required to transport the water necessary for the cycle E) Cooler temperatures at night slow enzyme activity and rates of substrate diffusionarrow_forward
- What Are the General Properties of Photosynthesis?arrow_forwardPlants undergo both photosynthesis and cellular respiration. Why don’t plants simply use the ATP pro¬duced in the light reactions of photosynthesis to drive cellular processes? A) The ATP produced during photosynthesis is chemically different from the ATP produced during cellular respiration and cannot be used for anabolic reactions B) ATP cannot be stockpiled so the plants would have no energy during non-daylight hours C) The plants have no way of getting the ATP made during photosynthesis out of the chloroplasts to the rest of the cell D) Plants rely on cellular respiration to remove excess O2 and prevent photorespirationarrow_forwardWhat is immediate product of photosynthesis?arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College