What do some photosynthetic bacteria use as a source of electrons instead of water? a. oxygen (O 2 ) b. hydrogen sulfide (H 2 S) c. organic compounds (e.g., CH 3 COO – ) d. nitrate (NO 3 – )

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Answer 1

Textbook Question

Chapter 26, Problem 1TYK

What do some photosynthetic bacteria use as a source of electrons instead of water?

a. oxygen (O₂)

b. hydrogen sulfide (H₂S)

c. organic compounds (e.g., CH₃COO^–)

d. nitrate (NO₃^–)

Expert Solution & Answer

Summary Introduction

Introduction:

In the photophosphorylation reaction, electrons are required. These electrons are acquired from water molecules. The molecule is split and oxygen is generated as a by-product.

Answer to Problem 1TYK

Correct answer:

Some of the photosynthetic bacteria use hydrogen sulfide (H₂S) instead of water as a source of electrons.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (b) is given that hydrogen sulfide is used an alternative source of energy by some photosynthetic bacteria instead of water. Some of the bacteria may not use water molecule as a source of electrons and use hydrogen sulfide instead. For example, a sulfur bacteria Thiobacillus oxidizes sulfur by sulfate production required for growth of plants. Some of them also use other different molecules such as iron ions. Hence, Option (b) is correct.

Explanation for incorrect answers:

Option (a) is given that oxygen (O₂) is used an alternative source of energy by some photosynthetic bacteria instead of water. In this process, oxygen is released as a by-product and does not act as an electron source. So, it is a wrong answer.

Option (c) is given that organic compounds like acetate are used as an alternative source of energy by some photosynthetic bacteria instead of water. The organic compounds such as acetate ions also do not provide electrons. So, it is a wrong answer.

Option (d) is given that nitrate (NO3-) is used an alternative source of energy by some photosynthetic bacteria, instead of water. The ammonia is converted into nitrate and is used up by the plants directly. Therefore, they do not provide electrons. So, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

Thus, some photosynthetic bacteria use hydrogen sulfide as an alternative source of energy.

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Students have asked these similar questions

How are the NADPH and G3P molecules made during photosynthesis similar? a. They are both end products of photosynthesis. b. They are both substrates for photosynthesis. c. They are both produced from carbon dioxide. d. They both store energy in chemical bonds.

C.B. van Niel is famous for his discoveries regarding photosynthesis in sulfur bacteria. Which of the following statements is true of his experiments? a. Van Niel found that oxygen created by plants is derived from water, not carbon dioxide b. He found that sulfur bacteria do not use light, but instead use hydrogen sulfide as a source of energy for producing sugars. c. Sulfur bacteria used water to produce hydrogen sulfide d. From his observations, he reasoned that all producers require a hydrogen source, but that source can vary. e. Both a) and d)

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Answer 2

Textbook Question

Chapter 26, Problem 1TYK

What do some photosynthetic bacteria use as a source of electrons instead of water?

a. oxygen (O₂)

b. hydrogen sulfide (H₂S)

c. organic compounds (e.g., CH₃COO^–)

d. nitrate (NO₃^–)

Expert Solution & Answer

Summary Introduction

Introduction:

In the photophosphorylation reaction, electrons are required. These electrons are acquired from water molecules. The molecule is split and oxygen is generated as a by-product.

Answer to Problem 1TYK

Correct answer:

Some of the photosynthetic bacteria use hydrogen sulfide (H₂S) instead of water as a source of electrons.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (b) is given that hydrogen sulfide is used an alternative source of energy by some photosynthetic bacteria instead of water. Some of the bacteria may not use water molecule as a source of electrons and use hydrogen sulfide instead. For example, a sulfur bacteria Thiobacillus oxidizes sulfur by sulfate production required for growth of plants. Some of them also use other different molecules such as iron ions. Hence, Option (b) is correct.

Explanation for incorrect answers:

Option (a) is given that oxygen (O₂) is used an alternative source of energy by some photosynthetic bacteria instead of water. In this process, oxygen is released as a by-product and does not act as an electron source. So, it is a wrong answer.

Option (c) is given that organic compounds like acetate are used as an alternative source of energy by some photosynthetic bacteria instead of water. The organic compounds such as acetate ions also do not provide electrons. So, it is a wrong answer.

Option (d) is given that nitrate (NO3-) is used an alternative source of energy by some photosynthetic bacteria, instead of water. The ammonia is converted into nitrate and is used up by the plants directly. Therefore, they do not provide electrons. So, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

Thus, some photosynthetic bacteria use hydrogen sulfide as an alternative source of energy.

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Answer 3

Textbook Question

Chapter 26, Problem 1TYK

What do some photosynthetic bacteria use as a source of electrons instead of water?

a. oxygen (O₂)

b. hydrogen sulfide (H₂S)

c. organic compounds (e.g., CH₃COO^–)

d. nitrate (NO₃^–)

Expert Solution & Answer

Summary Introduction

Introduction:

In the photophosphorylation reaction, electrons are required. These electrons are acquired from water molecules. The molecule is split and oxygen is generated as a by-product.

Answer to Problem 1TYK

Correct answer:

Some of the photosynthetic bacteria use hydrogen sulfide (H₂S) instead of water as a source of electrons.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (b) is given that hydrogen sulfide is used an alternative source of energy by some photosynthetic bacteria instead of water. Some of the bacteria may not use water molecule as a source of electrons and use hydrogen sulfide instead. For example, a sulfur bacteria Thiobacillus oxidizes sulfur by sulfate production required for growth of plants. Some of them also use other different molecules such as iron ions. Hence, Option (b) is correct.

Explanation for incorrect answers:

Option (a) is given that oxygen (O₂) is used an alternative source of energy by some photosynthetic bacteria instead of water. In this process, oxygen is released as a by-product and does not act as an electron source. So, it is a wrong answer.

Option (c) is given that organic compounds like acetate are used as an alternative source of energy by some photosynthetic bacteria instead of water. The organic compounds such as acetate ions also do not provide electrons. So, it is a wrong answer.

Option (d) is given that nitrate (NO3-) is used an alternative source of energy by some photosynthetic bacteria, instead of water. The ammonia is converted into nitrate and is used up by the plants directly. Therefore, they do not provide electrons. So, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

Thus, some photosynthetic bacteria use hydrogen sulfide as an alternative source of energy.

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

Answer 4

Textbook Question

Chapter 26, Problem 1TYK

What do some photosynthetic bacteria use as a source of electrons instead of water?

a. oxygen (O₂)

b. hydrogen sulfide (H₂S)

c. organic compounds (e.g., CH₃COO^–)

d. nitrate (NO₃^–)

Expert Solution & Answer

Summary Introduction

Introduction:

In the photophosphorylation reaction, electrons are required. These electrons are acquired from water molecules. The molecule is split and oxygen is generated as a by-product.

Answer to Problem 1TYK

Correct answer:

Some of the photosynthetic bacteria use hydrogen sulfide (H₂S) instead of water as a source of electrons.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (b) is given that hydrogen sulfide is used an alternative source of energy by some photosynthetic bacteria instead of water. Some of the bacteria may not use water molecule as a source of electrons and use hydrogen sulfide instead. For example, a sulfur bacteria Thiobacillus oxidizes sulfur by sulfate production required for growth of plants. Some of them also use other different molecules such as iron ions. Hence, Option (b) is correct.

Explanation for incorrect answers:

Option (a) is given that oxygen (O₂) is used an alternative source of energy by some photosynthetic bacteria instead of water. In this process, oxygen is released as a by-product and does not act as an electron source. So, it is a wrong answer.

Option (c) is given that organic compounds like acetate are used as an alternative source of energy by some photosynthetic bacteria instead of water. The organic compounds such as acetate ions also do not provide electrons. So, it is a wrong answer.

Option (d) is given that nitrate (NO3-) is used an alternative source of energy by some photosynthetic bacteria, instead of water. The ammonia is converted into nitrate and is used up by the plants directly. Therefore, they do not provide electrons. So, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

Thus, some photosynthetic bacteria use hydrogen sulfide as an alternative source of energy.

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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:

In the photophosphorylation reaction, electrons are required. These electrons are acquired from water molecules. The molecule is split and oxygen is generated as a by-product.

Answer to Problem 1TYK

Correct answer:

Some of the photosynthetic bacteria use hydrogen sulfide (H₂S) instead of water as a source of electrons.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (b) is given that hydrogen sulfide is used an alternative source of energy by some photosynthetic bacteria instead of water. Some of the bacteria may not use water molecule as a source of electrons and use hydrogen sulfide instead. For example, a sulfur bacteria Thiobacillus oxidizes sulfur by sulfate production required for growth of plants. Some of them also use other different molecules such as iron ions. Hence, Option (b) is correct.

Explanation for incorrect answers:

Option (a) is given that oxygen (O₂) is used an alternative source of energy by some photosynthetic bacteria instead of water. In this process, oxygen is released as a by-product and does not act as an electron source. So, it is a wrong answer.

Option (c) is given that organic compounds like acetate are used as an alternative source of energy by some photosynthetic bacteria instead of water. The organic compounds such as acetate ions also do not provide electrons. So, it is a wrong answer.

Option (d) is given that nitrate (NO3-) is used an alternative source of energy by some photosynthetic bacteria, instead of water. The ammonia is converted into nitrate and is used up by the plants directly. Therefore, they do not provide electrons. So, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

Thus, some photosynthetic bacteria use hydrogen sulfide as an alternative source of energy.

Answer 8

Expert Solution & Answer

Summary Introduction

Introduction:

In the photophosphorylation reaction, electrons are required. These electrons are acquired from water molecules. The molecule is split and oxygen is generated as a by-product.

Answer to Problem 1TYK

Correct answer:

Some of the photosynthetic bacteria use hydrogen sulfide (H₂S) instead of water as a source of electrons.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (b) is given that hydrogen sulfide is used an alternative source of energy by some photosynthetic bacteria instead of water. Some of the bacteria may not use water molecule as a source of electrons and use hydrogen sulfide instead. For example, a sulfur bacteria Thiobacillus oxidizes sulfur by sulfate production required for growth of plants. Some of them also use other different molecules such as iron ions. Hence, Option (b) is correct.

Explanation for incorrect answers:

Option (a) is given that oxygen (O₂) is used an alternative source of energy by some photosynthetic bacteria instead of water. In this process, oxygen is released as a by-product and does not act as an electron source. So, it is a wrong answer.

Option (c) is given that organic compounds like acetate are used as an alternative source of energy by some photosynthetic bacteria instead of water. The organic compounds such as acetate ions also do not provide electrons. So, it is a wrong answer.

Option (d) is given that nitrate (NO3-) is used an alternative source of energy by some photosynthetic bacteria, instead of water. The ammonia is converted into nitrate and is used up by the plants directly. Therefore, they do not provide electrons. So, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

Thus, some photosynthetic bacteria use hydrogen sulfide as an alternative source of energy.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

Introduction:

In the photophosphorylation reaction, electrons are required. These electrons are acquired from water molecules. The molecule is split and oxygen is generated as a by-product.

Answer 12

Answer to Problem 1TYK

Correct answer:

Some of the photosynthetic bacteria use hydrogen sulfide (H₂S) instead of water as a source of electrons.

Answer 13

Explanation of Solution

Explanation/Justification for the correct answer:

Option (b) is given that hydrogen sulfide is used an alternative source of energy by some photosynthetic bacteria instead of water. Some of the bacteria may not use water molecule as a source of electrons and use hydrogen sulfide instead. For example, a sulfur bacteria Thiobacillus oxidizes sulfur by sulfate production required for growth of plants. Some of them also use other different molecules such as iron ions. Hence, Option (b) is correct.

Explanation for incorrect answers:

Option (a) is given that oxygen (O₂) is used an alternative source of energy by some photosynthetic bacteria instead of water. In this process, oxygen is released as a by-product and does not act as an electron source. So, it is a wrong answer.

Option (c) is given that organic compounds like acetate are used as an alternative source of energy by some photosynthetic bacteria instead of water. The organic compounds such as acetate ions also do not provide electrons. So, it is a wrong answer.

Option (d) is given that nitrate (NO3-) is used an alternative source of energy by some photosynthetic bacteria, instead of water. The ammonia is converted into nitrate and is used up by the plants directly. Therefore, they do not provide electrons. So, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Answer 14

Conclusion

Thus, some photosynthetic bacteria use hydrogen sulfide as an alternative source of energy.

Answer 15

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What do some photosynthetic bacteria use as a source of electrons instead of water? a. oxygen (O 2 ) b. hydrogen sulfide (H 2 S) c. organic compounds (e.g., CH 3 COO – ) d. nitrate (NO 3 – )

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