Assertion : Cyclic photophosphorylation synthesizes ATP.Reason : ATP synthesise in cyclic photophosphorylation is not associated with NADPH
Question
Assertion : Cyclic photophosphorylation synthesizes ATP.Reason : ATP synthesise in cyclic photophosphorylation is not associated with NADPH
Solution
The assertion and the reason are both correct and they are related.
Step 1: Understanding the Assertion "Cyclic photophosphorylation synthesizes ATP." This is a process that occurs in the chloroplasts during photosynthesis. Light energy is used to transfer electrons from a photosystem to an electron transport chain. This creates a flow of protons across the thylakoid membrane, which drives the synthesis of ATP.
Step 2: Understanding the Reason "ATP synthesis in cyclic photophosphorylation is not associated with NADPH." In cyclic photophosphorylation, the electrons are recycled back into the photosystem, so there is no production of NADPH. NADPH is produced in a different process called non-cyclic photophosphorylation.
Step 3: Connecting the Assertion and the Reason The reason is explaining a specific aspect of the assertion. It's detailing that while ATP is produced in cyclic photophosphorylation, NADPH is not. This is a key difference between cyclic and non-cyclic photophosphorylation. So, the assertion and the reason are correct and they are related.
Similar Questions
Synthesis of ATP and NADPH
Assertion – Cyclic photophosphorylationoccurs in stromaReason – Stroma membrane lacks PS IIand NADP reductase.Choose correct answer- (Pg. 213, M)A) Both Assertion & Reason are correctand Reason is correct explanation for AB) Both Assertion & Reason are correctbut Reason is not correct explanationfor AssertionC) Assertion is correct but Reason iswrongD) Both Assertion & Reason are wrong13.6.3 Chemiosmotic Hypothesis60. ATP Synthesis is linked to _i_ graduateacross a membrane in _ii_ (Pg. 213, E)(i) (ii)A) Electron Photosynthesis& respirationB) Electron Photosynthesis onlyC) Proton Photosynthesisand respirationD) Proton Photosynthesis butnotrespiration61. Which of the following statements is true?(Pg. 213, E)A) the protons accumulate towards outerside of membrane in photosynthesisB) the protons accumulate to wards innerside (lumen) of thylakoid in respiration.C) The protons accumulate towards outerside of membrane of respirationthylakoidD) None of these62. The proton gradient may be formed inphotosynthesis due to- (Pg. 213, E)A) Splitting of waterB) Reduction of NAD+C) Both A and BD) None of these63. Assertion – Protons move throughphotosystems, protons are transportedacross membrane.Reason – Primary acceptor of electrons isan H carrier (Pg. 213, M)A) Both Assertion & Reason are correctand Reason is explanation of AssertionB) Both Assertion & Reason are correctand Reason is not the explanation forAssertionC) Assertion is correct but Reason is notcorrectD) Assertion & Reason both are incorrect64. Which of these is an H carrier?(Pg. 213, E)A) PS II B) FerredoxinC) Plastocyanin D) Plastoquinone65. NADP reductase enzyme is located on________ of thylakoid membrane.(Pg. 214, E)A) Stroma side (outer side)B) Lumen side (I,e. outer side)C) Stroma Side (i.e. inner side)D) Lumen side (i.e. inner side)66. The proton gradient is also formed due to-(Pg. 214, E)A) reduction of NAD+B) reduction of NADP+C) reduction of both NAD+ & NADP+D) reduction of FAD+67. Which of the following is true?(Pg. 214, M)A) ATP & NADPH + H+ both are formedtowards stroma.B) ATP & NADPH + H+ both are formed inlumen of thylakoidC) ATP is formed in lumen while NADPH +H+ is formed towards stroma.
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