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Which one of the following is incorrect about the activities associated with PS-I and PS-II in non-cyclic photophospho-rylation?
- a)Water is oxidised in PS - II, but not in PS - I.
- b)Photons (light) are needed to activate both PS - I and PS - II.
- c)Photolysis of water, formation of ATP + NADPH + H occur.
- d)Production of NADPH + H+ is associated with PS - II, but not with PS - I.
Correct answer is option 'D'. Can you explain this answer?
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Which one of the following is incorrect about the activities associat...
Photosystem (PS) - 1 and II are two pigments system of light reaction. Non-cyclic photophosphorylation is the light-requiring part of photosynthesis in higher plants, in which an electron donor is required, and oxygen is produced as a waste product. It consists of two photoreactions, resulting in the synthesis of ATP and NADPH2. The hydrogen needed for the reduction of NADP (nicotinamide adenine dinucleotide phosphate) is made available from the breakdown of water.
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Which one of the following is incorrect about the activities associat...
Understanding PS-I and PS-II Activities
Photosystem I (PS-I) and Photosystem II (PS-II) play crucial roles in the process of non-cyclic photophosphorylation, which is essential for photosynthesis in plants. Let's break down the incorrect statement regarding PS-I and PS-II.
PS-II Functions
- Photolysis of Water: PS-II is responsible for the splitting of water (H2O) molecules into oxygen (O2), protons (H+), and electrons. This process provides the electrons needed for the electron transport chain.
- ATP Formation: PS-II also contributes to generating ATP through the proton gradient created during the electron transport chain.
PS-I Functions
- NADPH Production: PS-I is where NADP+ is reduced to NADPH. This occurs after the electrons have passed through the electron transport chain from PS-II and are re-excited by light.
- Light Absorption: PS-I absorbs light at a different wavelength (around 700 nm) than PS-II, which absorbs light at about 680 nm.
Why Option D is Incorrect
- The statement claims that "Production of NADPH + H+ is associated with PS-II, but not with PS-I." This is incorrect because:
- NADPH Formation: NADPH + H+ is primarily generated in PS-I, not PS-II.
- PS-II Role: PS-II is mainly involved in the oxidation of water and ATP synthesis, while PS-I handles the reduction of NADP+ to NADPH.
In summary, the incorrect statement in option D misattributes the production of NADPH to PS-II instead of PS-I, highlighting the distinct roles each photosystem plays in photosynthesis.
Photosystem I (PS-I) and Photosystem II (PS-II) play crucial roles in the process of non-cyclic photophosphorylation, which is essential for photosynthesis in plants. Let's break down the incorrect statement regarding PS-I and PS-II.
PS-II Functions
- Photolysis of Water: PS-II is responsible for the splitting of water (H2O) molecules into oxygen (O2), protons (H+), and electrons. This process provides the electrons needed for the electron transport chain.
- ATP Formation: PS-II also contributes to generating ATP through the proton gradient created during the electron transport chain.
PS-I Functions
- NADPH Production: PS-I is where NADP+ is reduced to NADPH. This occurs after the electrons have passed through the electron transport chain from PS-II and are re-excited by light.
- Light Absorption: PS-I absorbs light at a different wavelength (around 700 nm) than PS-II, which absorbs light at about 680 nm.
Why Option D is Incorrect
- The statement claims that "Production of NADPH + H+ is associated with PS-II, but not with PS-I." This is incorrect because:
- NADPH Formation: NADPH + H+ is primarily generated in PS-I, not PS-II.
- PS-II Role: PS-II is mainly involved in the oxidation of water and ATP synthesis, while PS-I handles the reduction of NADP+ to NADPH.
In summary, the incorrect statement in option D misattributes the production of NADPH to PS-II instead of PS-I, highlighting the distinct roles each photosystem plays in photosynthesis.
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Which one of the following is incorrect about the activities associated with PS-I and PS-II in non-cyclic photophospho-rylation?a)Water is oxidised in PS - II, but not in PS - I.b)Photons (light) are needed to activate both PS - I and PS - II.c)Photolysis of water, formation of ATP + NADPH + H occur.d)Production of NADPH + H+ is associated with PS - II, but not with PS - I.Correct answer is option 'D'. Can you explain this answer?
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Which one of the following is incorrect about the activities associated with PS-I and PS-II in non-cyclic photophospho-rylation?a)Water is oxidised in PS - II, but not in PS - I.b)Photons (light) are needed to activate both PS - I and PS - II.c)Photolysis of water, formation of ATP + NADPH + H occur.d)Production of NADPH + H+ is associated with PS - II, but not with PS - I.Correct answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which one of the following is incorrect about the activities associated with PS-I and PS-II in non-cyclic photophospho-rylation?a)Water is oxidised in PS - II, but not in PS - I.b)Photons (light) are needed to activate both PS - I and PS - II.c)Photolysis of water, formation of ATP + NADPH + H occur.d)Production of NADPH + H+ is associated with PS - II, but not with PS - I.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following is incorrect about the activities associated with PS-I and PS-II in non-cyclic photophospho-rylation?a)Water is oxidised in PS - II, but not in PS - I.b)Photons (light) are needed to activate both PS - I and PS - II.c)Photolysis of water, formation of ATP + NADPH + H occur.d)Production of NADPH + H+ is associated with PS - II, but not with PS - I.Correct answer is option 'D'. Can you explain this answer?.
Which one of the following is incorrect about the activities associated with PS-I and PS-II in non-cyclic photophospho-rylation?a)Water is oxidised in PS - II, but not in PS - I.b)Photons (light) are needed to activate both PS - I and PS - II.c)Photolysis of water, formation of ATP + NADPH + H occur.d)Production of NADPH + H+ is associated with PS - II, but not with PS - I.Correct answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which one of the following is incorrect about the activities associated with PS-I and PS-II in non-cyclic photophospho-rylation?a)Water is oxidised in PS - II, but not in PS - I.b)Photons (light) are needed to activate both PS - I and PS - II.c)Photolysis of water, formation of ATP + NADPH + H occur.d)Production of NADPH + H+ is associated with PS - II, but not with PS - I.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following is incorrect about the activities associated with PS-I and PS-II in non-cyclic photophospho-rylation?a)Water is oxidised in PS - II, but not in PS - I.b)Photons (light) are needed to activate both PS - I and PS - II.c)Photolysis of water, formation of ATP + NADPH + H occur.d)Production of NADPH + H+ is associated with PS - II, but not with PS - I.Correct answer is option 'D'. Can you explain this answer?.
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