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Read the following statements (1) F0 par...

Read the following statements (1) F0 part of ATPase is associated with breakdown of proton gradient. (2) a H-carrier contributes in creation of proton gradient. (3) movement of electrons in ETS is coupled to pumping of protons into the lumen. (4) formation of NADPH+H+ is related with the creation of proton gradient. How many of the above statements are correct?

A

Two

B

One

C

Four

D

Three

Text Solution

AI Generated Solution

The correct Answer is:
To determine how many of the given statements are correct regarding the processes involved in photosynthesis, we will analyze each statement step by step. **Step 1: Analyze Statement 1** - Statement: "F0 part of ATPase is associated with breakdown of proton gradient." - Explanation: The F0 part of ATP synthase (ATPase) is indeed responsible for utilizing the proton gradient to synthesize ATP. As protons flow through the F0 channel, it facilitates the conversion of ADP and inorganic phosphate (Pi) into ATP. Therefore, this statement is **correct**. **Step 2: Analyze Statement 2** - Statement: "A H-carrier contributes in creation of proton gradient." - Explanation: In the context of photosynthesis, plastoquinone acts as a hydrogen carrier that transports electrons and protons across the thylakoid membrane. It helps in establishing a proton gradient by moving protons from the stroma into the lumen. Thus, this statement is also **correct**. **Step 3: Analyze Statement 3** - Statement: "Movement of electrons in ETS is coupled to pumping of protons into lumen." - Explanation: The electron transport system (ETS) involves the transfer of electrons through various carriers, which is coupled with the active transport of protons into the thylakoid lumen. This process creates a proton gradient essential for ATP synthesis. Therefore, this statement is **correct**. **Step 4: Analyze Statement 4** - Statement: "Formation of NADPH+H+ is related with the creation of proton gradient." - Explanation: The formation of NADPH occurs when NADP+ accepts electrons and protons at the end of the electron transport chain. The proton gradient created during the electron transport is crucial for driving the synthesis of NADPH. Hence, this statement is also **correct**. **Conclusion:** All four statements are correct. Therefore, the answer is that **all 4 statements are correct**. ### Summary of Correctness 1. **Statement 1**: Correct 2. **Statement 2**: Correct 3. **Statement 3**: Correct 4. **Statement 4**: Correct Thus, the total number of correct statements is **4**. ---
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