(a) Interpretation: If life were to exist elsewhere in the universe, it would require some process like photosynthesis. Concept introduction: The plants use the sun’s light energy to convert water and carbon dioxide to form energy-rich glucose molecules by the process of photosynthesis. Photosynthesis occurs in the chloroplasts of plants. Animals being heterotrophic consume plants or other animals for energy requirements.

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Answer 1

Question

Chapter 19, Problem 20P

Interpretation Introduction

(a)

Interpretation:

If life were to exist elsewhere in the universe, it would require some process like photosynthesis.

Concept introduction:

The plants use the sun’s light energy to convert water and carbon dioxide to form energy-rich glucose molecules by the process of photosynthesis. Photosynthesis occurs in the chloroplasts of plants. Animals being heterotrophic consume plants or other animals for energy requirements.

Interpretation Introduction

(b)

Interpretation:

If the Starship Enterprise were to land on a distant planet and find no measurable oxygen in the atmosphere, could the crew conclude that photosynthesis is taking place or not.

Concept introduction:

Water acts as the electron donorin photosynthesis to produce glucose and oxygen. The absence of water hampers the process.

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Students have asked these similar questions

(a) It can be argued that, if life were to exist elsewhere in the universe, it would require some process like photosynthesis. Why is this argument reasonable? (b) If the starship Enterprise were to land on a distant planet and find no measurable oxygen in the atmosphere, could the crew conclude that photosynthesis is not taking place?

In photosynthesis, CO2 carbon atoms are transformed to glucose carbon atoms. (a) Are the CO2 carbon atoms being oxidized or reduced in this process? (b) Do the CO2 carbon atoms move to a higher or lower energy state in this process?

Radioactive isotopes are routinely used to investigate processes in living things. In 1941, biologists exposed photosynthesizing cells to water containing a heavy oxygen isotope, designated 18-O. The labelled isotope appears in the oxygen gas released in photosynthesis, demonstrating that the oxygen came from water. Explain where the 18-O would have ended up if the researchers had used 18-O-labelled carbon dioxide.

Answer 2

Question

Chapter 19, Problem 20P

Interpretation Introduction

(a)

Interpretation:

If life were to exist elsewhere in the universe, it would require some process like photosynthesis.

Concept introduction:

The plants use the sun’s light energy to convert water and carbon dioxide to form energy-rich glucose molecules by the process of photosynthesis. Photosynthesis occurs in the chloroplasts of plants. Animals being heterotrophic consume plants or other animals for energy requirements.

Interpretation Introduction

(b)

Interpretation:

If the Starship Enterprise were to land on a distant planet and find no measurable oxygen in the atmosphere, could the crew conclude that photosynthesis is taking place or not.

Concept introduction:

Water acts as the electron donorin photosynthesis to produce glucose and oxygen. The absence of water hampers the process.

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Answer 3

Question

Chapter 19, Problem 20P

Interpretation Introduction

(a)

Interpretation:

If life were to exist elsewhere in the universe, it would require some process like photosynthesis.

Concept introduction:

The plants use the sun’s light energy to convert water and carbon dioxide to form energy-rich glucose molecules by the process of photosynthesis. Photosynthesis occurs in the chloroplasts of plants. Animals being heterotrophic consume plants or other animals for energy requirements.

Interpretation Introduction

(b)

Interpretation:

If the Starship Enterprise were to land on a distant planet and find no measurable oxygen in the atmosphere, could the crew conclude that photosynthesis is taking place or not.

Concept introduction:

Water acts as the electron donorin photosynthesis to produce glucose and oxygen. The absence of water hampers the process.

Expert Solution & Answer

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Answer 4

Question

Chapter 19, Problem 20P

Interpretation Introduction

(a)

Interpretation:

If life were to exist elsewhere in the universe, it would require some process like photosynthesis.

Concept introduction:

The plants use the sun’s light energy to convert water and carbon dioxide to form energy-rich glucose molecules by the process of photosynthesis. Photosynthesis occurs in the chloroplasts of plants. Animals being heterotrophic consume plants or other animals for energy requirements.

Interpretation Introduction

(b)

Interpretation:

If the Starship Enterprise were to land on a distant planet and find no measurable oxygen in the atmosphere, could the crew conclude that photosynthesis is taking place or not.

Concept introduction:

Water acts as the electron donorin photosynthesis to produce glucose and oxygen. The absence of water hampers the process.

Expert Solution & Answer

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Answer 5

Chapter 19, Problem 20P

Interpretation Introduction

(a)

Interpretation:

If life were to exist elsewhere in the universe, it would require some process like photosynthesis.

Concept introduction:

The plants use the sun’s light energy to convert water and carbon dioxide to form energy-rich glucose molecules by the process of photosynthesis. Photosynthesis occurs in the chloroplasts of plants. Animals being heterotrophic consume plants or other animals for energy requirements.

Interpretation Introduction

(b)

Interpretation:

If the Starship Enterprise were to land on a distant planet and find no measurable oxygen in the atmosphere, could the crew conclude that photosynthesis is taking place or not.

Concept introduction:

Water acts as the electron donorin photosynthesis to produce glucose and oxygen. The absence of water hampers the process.

Answer 6

Chapter 19, Problem 20P

Interpretation Introduction

(a)

Interpretation:

If life were to exist elsewhere in the universe, it would require some process like photosynthesis.

Concept introduction:

The plants use the sun’s light energy to convert water and carbon dioxide to form energy-rich glucose molecules by the process of photosynthesis. Photosynthesis occurs in the chloroplasts of plants. Animals being heterotrophic consume plants or other animals for energy requirements.

Answer 7

Chapter 19, Problem 20P

Interpretation Introduction

(a)

Interpretation:

If life were to exist elsewhere in the universe, it would require some process like photosynthesis.

Concept introduction:

The plants use the sun’s light energy to convert water and carbon dioxide to form energy-rich glucose molecules by the process of photosynthesis. Photosynthesis occurs in the chloroplasts of plants. Animals being heterotrophic consume plants or other animals for energy requirements.

Answer 8

Interpretation Introduction

(b)

Interpretation:

If the Starship Enterprise were to land on a distant planet and find no measurable oxygen in the atmosphere, could the crew conclude that photosynthesis is taking place or not.

Concept introduction:

Water acts as the electron donorin photosynthesis to produce glucose and oxygen. The absence of water hampers the process.

Answer 9

Interpretation Introduction

(b)

Interpretation:

If the Starship Enterprise were to land on a distant planet and find no measurable oxygen in the atmosphere, could the crew conclude that photosynthesis is taking place or not.

Concept introduction:

Water acts as the electron donorin photosynthesis to produce glucose and oxygen. The absence of water hampers the process.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 19 - Prob. 1P Ch. 19 - Prob. 2P Ch. 19 - Prob. 3P Ch. 19 - Prob. 4P Ch. 19 - Prob. 5P Ch. 19 - Prob. 6P Ch. 19 - Prob. 7P Ch. 19 - Prob. 8P Ch. 19 - Prob. 9P Ch. 19 - Prob. 10P

Solution Summary: The author explains that if the Starship Enterprise were to land on a distant planet and find no measurable oxygen in the atmosphere, could the crew conclude that photosynthesis is taking place on the planet?

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