Which descriptors are likely to have applied to the earliest microbes on the planet? a. chemoautotrophic b. thermophilic c. chemoheterotrophic d. two of the above

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Answer 1

Textbook Question

Chapter 6, Problem 1Q

Which descriptors are likely to have applied to the earliest microbes on the planet?

a. chemoautotrophic
b. thermophilic
c. chemoheterotrophic
d. two of the above

Expert Solution & Answer

Summary Introduction

Introduction:

The different factors that affect the existence of various life forms present on the Earth are such as, temperature, oxygen, pH, osmotic pressure, radiations. Several other factors also affected the earliest life form that existed on the planet Earth.

Answer to Problem 1Q

Correct answer:

The descriptors most likely to have applied to the earliest microbes on the planet were chemoautotrophic and thermophilic. Hence, the option (d) is correct.

Option (d) is given as “two of the above”.

Explanation of Solution

Justify reason for the correct statement:

The first organisms required energy for their survival and in order to meet the requirement they had raw chemicals as substrate and no ready-made energy source, hence, they converted these chemicals into food and generated energy.

The temperature of the Earth was high during the initial days of development, and only organisms that could have survived in that temperature where thermophiles. Also the earliest fossils obtained are that of cyanobacteria, which support the existence of thermophiles as the earliest life forms.

Hence, option (d) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “chemoautotrophic”.

It is true that the earliest life-form that existed was chemoautotrophic but it is not the only correct answer as these were also thermophilic in nature. Hence, it is a wrong answer.

Option (b) is given as “thermophilic”.

It is true that the earliest life-form that existed was thermophilic but it is not the only correct answer as these were also chemoautotrophic in nature. Hence, it is a wrong answer.

Option (c) is given as “chemoheterotrophic”

The earliest cells had only raw chemicals and not the prepared food they converted these chemical molecules to generate food. Hence, it is a wrong answer.

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

Conclusion

The earliest life form that originated on Earth were chemoautotrophic and thermophilic as the early Earth condition only supported this type of physiology.

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Answer 2

Textbook Question

Chapter 6, Problem 1Q

Which descriptors are likely to have applied to the earliest microbes on the planet?

a. chemoautotrophic
b. thermophilic
c. chemoheterotrophic
d. two of the above

Expert Solution & Answer

Summary Introduction

Introduction:

The different factors that affect the existence of various life forms present on the Earth are such as, temperature, oxygen, pH, osmotic pressure, radiations. Several other factors also affected the earliest life form that existed on the planet Earth.

Answer to Problem 1Q

Correct answer:

The descriptors most likely to have applied to the earliest microbes on the planet were chemoautotrophic and thermophilic. Hence, the option (d) is correct.

Option (d) is given as “two of the above”.

Explanation of Solution

Justify reason for the correct statement:

The first organisms required energy for their survival and in order to meet the requirement they had raw chemicals as substrate and no ready-made energy source, hence, they converted these chemicals into food and generated energy.

The temperature of the Earth was high during the initial days of development, and only organisms that could have survived in that temperature where thermophiles. Also the earliest fossils obtained are that of cyanobacteria, which support the existence of thermophiles as the earliest life forms.

Hence, option (d) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “chemoautotrophic”.

It is true that the earliest life-form that existed was chemoautotrophic but it is not the only correct answer as these were also thermophilic in nature. Hence, it is a wrong answer.

Option (b) is given as “thermophilic”.

It is true that the earliest life-form that existed was thermophilic but it is not the only correct answer as these were also chemoautotrophic in nature. Hence, it is a wrong answer.

Option (c) is given as “chemoheterotrophic”

The earliest cells had only raw chemicals and not the prepared food they converted these chemical molecules to generate food. Hence, it is a wrong answer.

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

Conclusion

The earliest life form that originated on Earth were chemoautotrophic and thermophilic as the early Earth condition only supported this type of physiology.

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

Answer 3

Textbook Question

Chapter 6, Problem 1Q

Which descriptors are likely to have applied to the earliest microbes on the planet?

a. chemoautotrophic
b. thermophilic
c. chemoheterotrophic
d. two of the above

Expert Solution & Answer

Summary Introduction

Introduction:

The different factors that affect the existence of various life forms present on the Earth are such as, temperature, oxygen, pH, osmotic pressure, radiations. Several other factors also affected the earliest life form that existed on the planet Earth.

Answer to Problem 1Q

Correct answer:

The descriptors most likely to have applied to the earliest microbes on the planet were chemoautotrophic and thermophilic. Hence, the option (d) is correct.

Option (d) is given as “two of the above”.

Explanation of Solution

Justify reason for the correct statement:

The first organisms required energy for their survival and in order to meet the requirement they had raw chemicals as substrate and no ready-made energy source, hence, they converted these chemicals into food and generated energy.

The temperature of the Earth was high during the initial days of development, and only organisms that could have survived in that temperature where thermophiles. Also the earliest fossils obtained are that of cyanobacteria, which support the existence of thermophiles as the earliest life forms.

Hence, option (d) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “chemoautotrophic”.

It is true that the earliest life-form that existed was chemoautotrophic but it is not the only correct answer as these were also thermophilic in nature. Hence, it is a wrong answer.

Option (b) is given as “thermophilic”.

It is true that the earliest life-form that existed was thermophilic but it is not the only correct answer as these were also chemoautotrophic in nature. Hence, it is a wrong answer.

Option (c) is given as “chemoheterotrophic”

The earliest cells had only raw chemicals and not the prepared food they converted these chemical molecules to generate food. Hence, it is a wrong answer.

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

Conclusion

The earliest life form that originated on Earth were chemoautotrophic and thermophilic as the early Earth condition only supported this type of physiology.

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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 6, Problem 1Q

Which descriptors are likely to have applied to the earliest microbes on the planet?

a. chemoautotrophic
b. thermophilic
c. chemoheterotrophic
d. two of the above

Expert Solution & Answer

Summary Introduction

Introduction:

The different factors that affect the existence of various life forms present on the Earth are such as, temperature, oxygen, pH, osmotic pressure, radiations. Several other factors also affected the earliest life form that existed on the planet Earth.

Answer to Problem 1Q

Correct answer:

The descriptors most likely to have applied to the earliest microbes on the planet were chemoautotrophic and thermophilic. Hence, the option (d) is correct.

Option (d) is given as “two of the above”.

Explanation of Solution

Justify reason for the correct statement:

The first organisms required energy for their survival and in order to meet the requirement they had raw chemicals as substrate and no ready-made energy source, hence, they converted these chemicals into food and generated energy.

The temperature of the Earth was high during the initial days of development, and only organisms that could have survived in that temperature where thermophiles. Also the earliest fossils obtained are that of cyanobacteria, which support the existence of thermophiles as the earliest life forms.

Hence, option (d) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “chemoautotrophic”.

It is true that the earliest life-form that existed was chemoautotrophic but it is not the only correct answer as these were also thermophilic in nature. Hence, it is a wrong answer.

Option (b) is given as “thermophilic”.

It is true that the earliest life-form that existed was thermophilic but it is not the only correct answer as these were also chemoautotrophic in nature. Hence, it is a wrong answer.

Option (c) is given as “chemoheterotrophic”

The earliest cells had only raw chemicals and not the prepared food they converted these chemical molecules to generate food. Hence, it is a wrong answer.

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

Conclusion

The earliest life form that originated on Earth were chemoautotrophic and thermophilic as the early Earth condition only supported this type of physiology.

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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 different factors that affect the existence of various life forms present on the Earth are such as, temperature, oxygen, pH, osmotic pressure, radiations. Several other factors also affected the earliest life form that existed on the planet Earth.

Answer to Problem 1Q

Correct answer:

The descriptors most likely to have applied to the earliest microbes on the planet were chemoautotrophic and thermophilic. Hence, the option (d) is correct.

Option (d) is given as “two of the above”.

Explanation of Solution

Justify reason for the correct statement:

The first organisms required energy for their survival and in order to meet the requirement they had raw chemicals as substrate and no ready-made energy source, hence, they converted these chemicals into food and generated energy.

The temperature of the Earth was high during the initial days of development, and only organisms that could have survived in that temperature where thermophiles. Also the earliest fossils obtained are that of cyanobacteria, which support the existence of thermophiles as the earliest life forms.

Hence, option (d) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “chemoautotrophic”.

It is true that the earliest life-form that existed was chemoautotrophic but it is not the only correct answer as these were also thermophilic in nature. Hence, it is a wrong answer.

Option (b) is given as “thermophilic”.

It is true that the earliest life-form that existed was thermophilic but it is not the only correct answer as these were also chemoautotrophic in nature. Hence, it is a wrong answer.

Option (c) is given as “chemoheterotrophic”

The earliest cells had only raw chemicals and not the prepared food they converted these chemical molecules to generate food. Hence, it is a wrong answer.

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

Conclusion

The earliest life form that originated on Earth were chemoautotrophic and thermophilic as the early Earth condition only supported this type of physiology.

Answer 8

Expert Solution & Answer

Summary Introduction

Introduction:

The different factors that affect the existence of various life forms present on the Earth are such as, temperature, oxygen, pH, osmotic pressure, radiations. Several other factors also affected the earliest life form that existed on the planet Earth.

Answer to Problem 1Q

Correct answer:

The descriptors most likely to have applied to the earliest microbes on the planet were chemoautotrophic and thermophilic. Hence, the option (d) is correct.

Option (d) is given as “two of the above”.

Explanation of Solution

Justify reason for the correct statement:

The first organisms required energy for their survival and in order to meet the requirement they had raw chemicals as substrate and no ready-made energy source, hence, they converted these chemicals into food and generated energy.

The temperature of the Earth was high during the initial days of development, and only organisms that could have survived in that temperature where thermophiles. Also the earliest fossils obtained are that of cyanobacteria, which support the existence of thermophiles as the earliest life forms.

Hence, option (d) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “chemoautotrophic”.

It is true that the earliest life-form that existed was chemoautotrophic but it is not the only correct answer as these were also thermophilic in nature. Hence, it is a wrong answer.

Option (b) is given as “thermophilic”.

It is true that the earliest life-form that existed was thermophilic but it is not the only correct answer as these were also chemoautotrophic in nature. Hence, it is a wrong answer.

Option (c) is given as “chemoheterotrophic”

The earliest cells had only raw chemicals and not the prepared food they converted these chemical molecules to generate food. Hence, it is a wrong answer.

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

Conclusion

The earliest life form that originated on Earth were chemoautotrophic and thermophilic as the early Earth condition only supported this type of physiology.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

Introduction:

The different factors that affect the existence of various life forms present on the Earth are such as, temperature, oxygen, pH, osmotic pressure, radiations. Several other factors also affected the earliest life form that existed on the planet Earth.

Answer 12

Answer to Problem 1Q

Correct answer:

The descriptors most likely to have applied to the earliest microbes on the planet were chemoautotrophic and thermophilic. Hence, the option (d) is correct.

Option (d) is given as “two of the above”.

Answer 13

Explanation of Solution

Justify reason for the correct statement:

The first organisms required energy for their survival and in order to meet the requirement they had raw chemicals as substrate and no ready-made energy source, hence, they converted these chemicals into food and generated energy.

The temperature of the Earth was high during the initial days of development, and only organisms that could have survived in that temperature where thermophiles. Also the earliest fossils obtained are that of cyanobacteria, which support the existence of thermophiles as the earliest life forms.

Hence, option (d) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “chemoautotrophic”.

It is true that the earliest life-form that existed was chemoautotrophic but it is not the only correct answer as these were also thermophilic in nature. Hence, it is a wrong answer.

Option (b) is given as “thermophilic”.

It is true that the earliest life-form that existed was thermophilic but it is not the only correct answer as these were also chemoautotrophic in nature. Hence, it is a wrong answer.

Option (c) is given as “chemoheterotrophic”

The earliest cells had only raw chemicals and not the prepared food they converted these chemical molecules to generate food. Hence, it is a wrong answer.

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

Answer 14

Conclusion

The earliest life form that originated on Earth were chemoautotrophic and thermophilic as the early Earth condition only supported this type of physiology.

Answer 15

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Which descriptors are likely to have applied to the earliest microbes on the planet? a. chemoautotrophic b. thermophilic c. chemoheterotrophic d. two of the above

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