The water necessary for photosynthesis is split into H 2 and O 2 . is directly involved in the synthesis of carbohydrates. provides the elections to replace lost electrons in photosystem II. provides H + needed to synthesize G3P. does none of the above.

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Answer 1

Textbook Question

Chapter 7, Problem 1TY

The water necessary for photosynthesis

is split into H₂ and O₂.
is directly involved in the synthesis of carbohydrates.
provides the elections to replace lost electrons in photosystem II.
provides H⁺ needed to synthesize G3P.
does none of the above.

Expert Solution & Answer

Summary Introduction

Introduction:

The Calvin cycle utilizes the energy produced by the light-dependent reaction into synthesizing carbohydrates from carbon dioxide. The NADPH (nicotinamide adenine dinucleotide phosphate) acts as a reducing agent that adds the high energy electrons to the carbon dioxide molecule to form polysaccharide (glucose).

Answer to Problem 1TY

The correct answer is option (c) provides the electrons to replace lost electrons in photosystem II.

Explanation of Solution

Explanation/justification for the correct answer:

Option (c) provides the electrons to replace lost electrons in photosystem. Water does provide lost electrons for photosystem II that are used for the electron transport chain. So, the correct answer is option (c).

Explanation for incorrect answer:

Option (a) is split into H₂ and O₂. Splitting of water under the presence of light to yield hydrogen and oxygen is known as photolysis of water to provide electrons for the reaction. So, this is an incorrect option.

Option (b) is directly involved in the synthesis of carbohydrates. Water is no directly involved in the synthesis of carbohydrates as it provides electrons for reduction of NADH that participates in the production of carbohydrates. So, this is an incorrect option.

Option (d) provides H+ needed to synthesize G3P. The protons for the synthesis for G3P come from the photolysis of water, but that is not the necessary source of protons they can also come from thylakoid membrane. So, this is an incorrect answer.

Option (e) does none of the above. The water is necessary for the compensation of the electrons that are lost in the photosystem II and these electrons participate in the electron transport chain. So, this is an incorrect answer.

Conclusion

Water is required as a source of electrons in the light reaction where photosystems get activated and lead to an electron transport chain to produce energy-rich molecules. Hence, the correct answer is option (c) provides the electrons to replace lost electrons in photosystem II.

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Students have asked these similar questions

Which of the following statements is FALSE? Water is the ultimate electron donor. Photosystem II has chlorophylls in its reaction center that has maximum light absorption at 680 nm. Plastoquinone has a higher reduction potential than plastocyanin. Proton gradient is created in the light phase of photosynthesis wherein the pH in the stroma is higher than in the lumen.

Draw a diagram of the dark phase of photosynthesis. You must represent this phase in the form of a cycle indicating the parts of carboxylation, reduction, generation of hexoses and regeneration. Ribulose, CO2, rubisco, phosphoglycerate (PGA), bisphosphoglycerate, phosphoglyceraldehyde (PGAL), ATP, ADP, NADPH, NADP, kinase, fructose, and glucose should appear.

Which of the following statements about photosynthesis is NOT true? Light independent reactions are very similar to the electron transport chain of cellular respiration Light is absolutely essential for both aspects of photosynthesis In order replace electrons, water is split to form oxygen gas Light dependent reactions are very similar, but in reverse, to the Krebs cycle and glycolysis

Answer 2

Textbook Question

Chapter 7, Problem 1TY

The water necessary for photosynthesis

is split into H₂ and O₂.
is directly involved in the synthesis of carbohydrates.
provides the elections to replace lost electrons in photosystem II.
provides H⁺ needed to synthesize G3P.
does none of the above.

Expert Solution & Answer

Summary Introduction

Introduction:

The Calvin cycle utilizes the energy produced by the light-dependent reaction into synthesizing carbohydrates from carbon dioxide. The NADPH (nicotinamide adenine dinucleotide phosphate) acts as a reducing agent that adds the high energy electrons to the carbon dioxide molecule to form polysaccharide (glucose).

Answer to Problem 1TY

The correct answer is option (c) provides the electrons to replace lost electrons in photosystem II.

Explanation of Solution

Explanation/justification for the correct answer:

Option (c) provides the electrons to replace lost electrons in photosystem. Water does provide lost electrons for photosystem II that are used for the electron transport chain. So, the correct answer is option (c).

Explanation for incorrect answer:

Option (a) is split into H₂ and O₂. Splitting of water under the presence of light to yield hydrogen and oxygen is known as photolysis of water to provide electrons for the reaction. So, this is an incorrect option.

Option (b) is directly involved in the synthesis of carbohydrates. Water is no directly involved in the synthesis of carbohydrates as it provides electrons for reduction of NADH that participates in the production of carbohydrates. So, this is an incorrect option.

Option (d) provides H+ needed to synthesize G3P. The protons for the synthesis for G3P come from the photolysis of water, but that is not the necessary source of protons they can also come from thylakoid membrane. So, this is an incorrect answer.

Option (e) does none of the above. The water is necessary for the compensation of the electrons that are lost in the photosystem II and these electrons participate in the electron transport chain. So, this is an incorrect answer.

Conclusion

Water is required as a source of electrons in the light reaction where photosystems get activated and lead to an electron transport chain to produce energy-rich molecules. Hence, the correct answer is option (c) provides the electrons to replace lost electrons in photosystem II.

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Answer 3

Textbook Question

Chapter 7, Problem 1TY

The water necessary for photosynthesis

is split into H₂ and O₂.
is directly involved in the synthesis of carbohydrates.
provides the elections to replace lost electrons in photosystem II.
provides H⁺ needed to synthesize G3P.
does none of the above.

Expert Solution & Answer

Summary Introduction

Introduction:

The Calvin cycle utilizes the energy produced by the light-dependent reaction into synthesizing carbohydrates from carbon dioxide. The NADPH (nicotinamide adenine dinucleotide phosphate) acts as a reducing agent that adds the high energy electrons to the carbon dioxide molecule to form polysaccharide (glucose).

Answer to Problem 1TY

The correct answer is option (c) provides the electrons to replace lost electrons in photosystem II.

Explanation of Solution

Explanation/justification for the correct answer:

Option (c) provides the electrons to replace lost electrons in photosystem. Water does provide lost electrons for photosystem II that are used for the electron transport chain. So, the correct answer is option (c).

Explanation for incorrect answer:

Option (a) is split into H₂ and O₂. Splitting of water under the presence of light to yield hydrogen and oxygen is known as photolysis of water to provide electrons for the reaction. So, this is an incorrect option.

Option (b) is directly involved in the synthesis of carbohydrates. Water is no directly involved in the synthesis of carbohydrates as it provides electrons for reduction of NADH that participates in the production of carbohydrates. So, this is an incorrect option.

Option (d) provides H+ needed to synthesize G3P. The protons for the synthesis for G3P come from the photolysis of water, but that is not the necessary source of protons they can also come from thylakoid membrane. So, this is an incorrect answer.

Option (e) does none of the above. The water is necessary for the compensation of the electrons that are lost in the photosystem II and these electrons participate in the electron transport chain. So, this is an incorrect answer.

Conclusion

Water is required as a source of electrons in the light reaction where photosystems get activated and lead to an electron transport chain to produce energy-rich molecules. Hence, the correct answer is option (c) provides the electrons to replace lost electrons in photosystem II.

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Answer 4

Textbook Question

Chapter 7, Problem 1TY

The water necessary for photosynthesis

is split into H₂ and O₂.
is directly involved in the synthesis of carbohydrates.
provides the elections to replace lost electrons in photosystem II.
provides H⁺ needed to synthesize G3P.
does none of the above.

Expert Solution & Answer

Summary Introduction

Introduction:

The Calvin cycle utilizes the energy produced by the light-dependent reaction into synthesizing carbohydrates from carbon dioxide. The NADPH (nicotinamide adenine dinucleotide phosphate) acts as a reducing agent that adds the high energy electrons to the carbon dioxide molecule to form polysaccharide (glucose).

Answer to Problem 1TY

The correct answer is option (c) provides the electrons to replace lost electrons in photosystem II.

Explanation of Solution

Explanation/justification for the correct answer:

Option (c) provides the electrons to replace lost electrons in photosystem. Water does provide lost electrons for photosystem II that are used for the electron transport chain. So, the correct answer is option (c).

Explanation for incorrect answer:

Option (a) is split into H₂ and O₂. Splitting of water under the presence of light to yield hydrogen and oxygen is known as photolysis of water to provide electrons for the reaction. So, this is an incorrect option.

Option (b) is directly involved in the synthesis of carbohydrates. Water is no directly involved in the synthesis of carbohydrates as it provides electrons for reduction of NADH that participates in the production of carbohydrates. So, this is an incorrect option.

Option (d) provides H+ needed to synthesize G3P. The protons for the synthesis for G3P come from the photolysis of water, but that is not the necessary source of protons they can also come from thylakoid membrane. So, this is an incorrect answer.

Option (e) does none of the above. The water is necessary for the compensation of the electrons that are lost in the photosystem II and these electrons participate in the electron transport chain. So, this is an incorrect answer.

Conclusion

Water is required as a source of electrons in the light reaction where photosystems get activated and lead to an electron transport chain to produce energy-rich molecules. Hence, the correct answer is option (c) provides the electrons to replace lost electrons in photosystem II.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Summary Introduction

Introduction:

The Calvin cycle utilizes the energy produced by the light-dependent reaction into synthesizing carbohydrates from carbon dioxide. The NADPH (nicotinamide adenine dinucleotide phosphate) acts as a reducing agent that adds the high energy electrons to the carbon dioxide molecule to form polysaccharide (glucose).

Answer to Problem 1TY

The correct answer is option (c) provides the electrons to replace lost electrons in photosystem II.

Explanation of Solution

Explanation/justification for the correct answer:

Option (c) provides the electrons to replace lost electrons in photosystem. Water does provide lost electrons for photosystem II that are used for the electron transport chain. So, the correct answer is option (c).

Explanation for incorrect answer:

Option (a) is split into H₂ and O₂. Splitting of water under the presence of light to yield hydrogen and oxygen is known as photolysis of water to provide electrons for the reaction. So, this is an incorrect option.

Option (b) is directly involved in the synthesis of carbohydrates. Water is no directly involved in the synthesis of carbohydrates as it provides electrons for reduction of NADH that participates in the production of carbohydrates. So, this is an incorrect option.

Option (d) provides H+ needed to synthesize G3P. The protons for the synthesis for G3P come from the photolysis of water, but that is not the necessary source of protons they can also come from thylakoid membrane. So, this is an incorrect answer.

Option (e) does none of the above. The water is necessary for the compensation of the electrons that are lost in the photosystem II and these electrons participate in the electron transport chain. So, this is an incorrect answer.

Conclusion

Water is required as a source of electrons in the light reaction where photosystems get activated and lead to an electron transport chain to produce energy-rich molecules. Hence, the correct answer is option (c) provides the electrons to replace lost electrons in photosystem II.

Answer 8

Expert Solution & Answer

Summary Introduction

Introduction:

The Calvin cycle utilizes the energy produced by the light-dependent reaction into synthesizing carbohydrates from carbon dioxide. The NADPH (nicotinamide adenine dinucleotide phosphate) acts as a reducing agent that adds the high energy electrons to the carbon dioxide molecule to form polysaccharide (glucose).

Answer to Problem 1TY

The correct answer is option (c) provides the electrons to replace lost electrons in photosystem II.

Explanation of Solution

Explanation/justification for the correct answer:

Option (c) provides the electrons to replace lost electrons in photosystem. Water does provide lost electrons for photosystem II that are used for the electron transport chain. So, the correct answer is option (c).

Explanation for incorrect answer:

Option (a) is split into H₂ and O₂. Splitting of water under the presence of light to yield hydrogen and oxygen is known as photolysis of water to provide electrons for the reaction. So, this is an incorrect option.

Option (b) is directly involved in the synthesis of carbohydrates. Water is no directly involved in the synthesis of carbohydrates as it provides electrons for reduction of NADH that participates in the production of carbohydrates. So, this is an incorrect option.

Option (d) provides H+ needed to synthesize G3P. The protons for the synthesis for G3P come from the photolysis of water, but that is not the necessary source of protons they can also come from thylakoid membrane. So, this is an incorrect answer.

Option (e) does none of the above. The water is necessary for the compensation of the electrons that are lost in the photosystem II and these electrons participate in the electron transport chain. So, this is an incorrect answer.

Conclusion

Water is required as a source of electrons in the light reaction where photosystems get activated and lead to an electron transport chain to produce energy-rich molecules. Hence, the correct answer is option (c) provides the electrons to replace lost electrons in photosystem II.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

Introduction:

The Calvin cycle utilizes the energy produced by the light-dependent reaction into synthesizing carbohydrates from carbon dioxide. The NADPH (nicotinamide adenine dinucleotide phosphate) acts as a reducing agent that adds the high energy electrons to the carbon dioxide molecule to form polysaccharide (glucose).

Answer 12

Answer to Problem 1TY

The correct answer is option (c) provides the electrons to replace lost electrons in photosystem II.

Answer 13

Explanation of Solution

Explanation/justification for the correct answer:

Option (c) provides the electrons to replace lost electrons in photosystem. Water does provide lost electrons for photosystem II that are used for the electron transport chain. So, the correct answer is option (c).

Explanation for incorrect answer:

Option (a) is split into H₂ and O₂. Splitting of water under the presence of light to yield hydrogen and oxygen is known as photolysis of water to provide electrons for the reaction. So, this is an incorrect option.

Option (b) is directly involved in the synthesis of carbohydrates. Water is no directly involved in the synthesis of carbohydrates as it provides electrons for reduction of NADH that participates in the production of carbohydrates. So, this is an incorrect option.

Option (d) provides H+ needed to synthesize G3P. The protons for the synthesis for G3P come from the photolysis of water, but that is not the necessary source of protons they can also come from thylakoid membrane. So, this is an incorrect answer.

Option (e) does none of the above. The water is necessary for the compensation of the electrons that are lost in the photosystem II and these electrons participate in the electron transport chain. So, this is an incorrect answer.

Answer 14

Conclusion

Water is required as a source of electrons in the light reaction where photosystems get activated and lead to an electron transport chain to produce energy-rich molecules. Hence, the correct answer is option (c) provides the electrons to replace lost electrons in photosystem II.

Answer 15

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The water necessary for photosynthesis is split into H 2 and O 2 . is directly involved in the synthesis of carbohydrates. provides the elections to replace lost electrons in photosystem II. provides H + needed to synthesize G3P. does none of the above.

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