Different elemental cycles take place in an environment. As a result of these cycles, different elements enter the biotic world. These elements play an important role in the living world. Some take part in important biochemical processes, while others are used to form biomolecules.

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Definition Definition Set of metabolic processes and reactions that produce energy from organic substances such as glucose. Cellular respiration takes place in the organism’s cells, where the chemical energy from nutrients or molecules of oxygen is converted into adenosine triphosphate (ATP). Cellular respiration that occurs in the presence of oxygen is called aerobic respiration; in the absence of oxygen, it is called anaerobic respiration.

Chapter 21, Problem 7RAT

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Introduction:

Different elemental cycles take place in an environment. As a result of these cycles, different elements enter the biotic world. These elements play an important role in the living world. Some take part in important biochemical processes, while others are used to form biomolecules.

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Explain (a) why the flow of energy through the biosphere depends on the cycling of nutrients, and (b) why the cycling of nutrients depends on gravity.

It is estimated that the total amount of oxygen (O2) contained in BIFs is equivalent to 6.6% of the oxygen present in the modern atmosphere. This is quite impressive given that the atmosphere during Archaean and early Proterozoic times was largely devoid of oxygen! Therefore, this reflects the photosynthetic efficiency of the early biosphere, coupled with its operation over long periods of time. Knowing that the mass of the modern atmosphere is 5.01×1018 kg, of which 21% is oxygen, what is the mass (in kilograms) of oxygen contained within BIFs? Answer x 1016 kg of O2 contained in BIF deposits Knowing that the molecular mass of O2 is 32 g/mole (0.032 kg/mole), how many moles of O2 are contained within BIFs? Answer x 1018 moles of O2 contained in BIF deposits Not sure what the "answers" are?

It is estimated that the total amount of oxygen (O2) contained in BIFs is equivalent to 6.6% of the oxygen present in the modern atmosphere. This is quite impressive given that the atmosphere during Archaean and early Proterozoic times was largely devoid of oxygen! Therefore, this reflects the photosynthetic efficiency of the early biosphere, coupled with its operation over long periods of time. Knowing that the mass of the modern atmosphere is 5.01×1018 kg, of which 21% is oxygen, what is the mass (in kilograms) of oxygen contained within BIFs?

Answer 2

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Definition Definition Set of metabolic processes and reactions that produce energy from organic substances such as glucose. Cellular respiration takes place in the organism’s cells, where the chemical energy from nutrients or molecules of oxygen is converted into adenosine triphosphate (ATP). Cellular respiration that occurs in the presence of oxygen is called aerobic respiration; in the absence of oxygen, it is called anaerobic respiration.

Chapter 21, Problem 7RAT

To determine

Introduction:

Different elemental cycles take place in an environment. As a result of these cycles, different elements enter the biotic world. These elements play an important role in the living world. Some take part in important biochemical processes, while others are used to form biomolecules.

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Answer 3

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Definition Definition Set of metabolic processes and reactions that produce energy from organic substances such as glucose. Cellular respiration takes place in the organism’s cells, where the chemical energy from nutrients or molecules of oxygen is converted into adenosine triphosphate (ATP). Cellular respiration that occurs in the presence of oxygen is called aerobic respiration; in the absence of oxygen, it is called anaerobic respiration.

Chapter 21, Problem 7RAT

To determine

Introduction:

Different elemental cycles take place in an environment. As a result of these cycles, different elements enter the biotic world. These elements play an important role in the living world. Some take part in important biochemical processes, while others are used to form biomolecules.

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Answer 4

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Definition Definition Set of metabolic processes and reactions that produce energy from organic substances such as glucose. Cellular respiration takes place in the organism’s cells, where the chemical energy from nutrients or molecules of oxygen is converted into adenosine triphosphate (ATP). Cellular respiration that occurs in the presence of oxygen is called aerobic respiration; in the absence of oxygen, it is called anaerobic respiration.

Chapter 21, Problem 7RAT

To determine

Introduction:

Different elemental cycles take place in an environment. As a result of these cycles, different elements enter the biotic world. These elements play an important role in the living world. Some take part in important biochemical processes, while others are used to form biomolecules.

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Answer 5

Chapter 21, Problem 7RAT

To determine

Introduction:

Different elemental cycles take place in an environment. As a result of these cycles, different elements enter the biotic world. These elements play an important role in the living world. Some take part in important biochemical processes, while others are used to form biomolecules.

Answer 6

Chapter 21, Problem 7RAT

To determine

Introduction:

Different elemental cycles take place in an environment. As a result of these cycles, different elements enter the biotic world. These elements play an important role in the living world. Some take part in important biochemical processes, while others are used to form biomolecules.

Answer 7

Chapter 21, Problem 7RAT

To determine

Introduction:

Different elemental cycles take place in an environment. As a result of these cycles, different elements enter the biotic world. These elements play an important role in the living world. Some take part in important biochemical processes, while others are used to form biomolecules.

Answer 8

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Ch. 21 - What is ecology?Ch. 21 - Prob. 2RCQ Ch. 21 - What is the difference between a community and an...Ch. 21 - Describe exponential growth. Under what conditions...Ch. 21 - Why do populations that live in unstable...Ch. 21 - Describe logistic growth. Under what conditions do...Ch. 21 - What are the differences between Type I, Type II,...Ch. 21 - Explain how global human population size is...Ch. 21 - What is the age structure of a population? What...Ch. 21 - Prob. 10RCQ

Different elemental cycles take place in an environment. As a result of these cycles, different elements enter the biotic world. These elements play an important role in the living world. Some take part in important biochemical processes, while others are used to form biomolecules.

Solution Summary: The author explains that different elemental cycles take place in an environment, resulting in different elements entering the biotic world.

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Introduction:

Different elemental cycles take place in an environment. As a result of these cycles, different elements enter the biotic world. These elements play an important role in the living world. Some take part in important biochemical processes, while others are used to form biomolecules.

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Chapter 21 Solutions

Different elemental cycles take place in an environment. As a result of these cycles, different elements enter the biotic world. These elements play an important role in the living world. Some take part in important biochemical processes, while others are used to form biomolecules.

Solution Summary: The author explains that different elemental cycles take place in an environment, resulting in different elements entering the biotic world.

Concept explainers

Videos

Introduction: Different elemental cycles take place in an environment. As a result of these cycles, different elements enter the biotic world. These elements play an important role in the living world. Some take part in important biochemical processes, while others are used to form biomolecules.

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Chapter 21 Solutions

Introduction:

Different elemental cycles take place in an environment. As a result of these cycles, different elements enter the biotic world. These elements play an important role in the living world. Some take part in important biochemical processes, while others are used to form biomolecules.