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 – )

Question

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Answer 1

Textbook Question

Chapter 29, Problem 2TYK

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 2TYK

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 2

Textbook Question

Chapter 29, Problem 2TYK

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 2TYK

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 29, Problem 2TYK

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 2TYK

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 4

Textbook Question

Chapter 29, Problem 2TYK

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 2TYK

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 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 2TYK

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 2TYK

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 2TYK

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.