The specific role of oxygen in most cells. Concept introduction: Cellular respiration is one of the key mechanisms that take place in the cells of organisms for the purpose of cellular activity and excretion of waste products. They are of two types, namely aerobic and anaerobic respiration.

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Answer 1

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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 8.1, Problem 2C

Summary Introduction

To explain: The specific role of oxygen in most cells.

Concept introduction: Cellular respiration is one of the key mechanisms that take place in the cells of organisms for the purpose of cellular activity and excretion of waste products. They are of two types, namely aerobic and anaerobic respiration.

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Explain why cells of most multicellular organisms cannot live long without oxygen.

It is essential for the cells in plants and animals to have an adequate supply of oxygen. Explain what the oxygen is needed for in the cells? (Be as specific as possible.)

a) At the organelle/molecular level inside a mitochondrion, wWhy do cells engaged in aerobic cellular respiration need O2? At what points during aerobic cellular resp is CO2 released? b) O2 and CO2 do not dissolve in water easily but cells must be moist to have functional phospholipid bilayers. For air breathers, moist lungs might collapse and stick together so what prevents this? c) Aquatic animals contend with the relatively lower O2 levels in water, but at least they don’t have to deal with ventilating lung. Complex gills like in fish maximize O2 exchange with a counter-current system ensuring there is always a gradient between the water and the blood. How does this ensure there is always a gradient between the water and the blood? (many people mix this up so think carefully)

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 8.1, Problem 2C

Summary Introduction

To explain: The specific role of oxygen in most cells.

Concept introduction: Cellular respiration is one of the key mechanisms that take place in the cells of organisms for the purpose of cellular activity and excretion of waste products. They are of two types, namely aerobic and anaerobic respiration.

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Check out a sample textbook solution

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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 8.1, Problem 2C

Summary Introduction

To explain: The specific role of oxygen in most cells.

Concept introduction: Cellular respiration is one of the key mechanisms that take place in the cells of organisms for the purpose of cellular activity and excretion of waste products. They are of two types, namely aerobic and anaerobic respiration.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 4

Question

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 8.1, Problem 2C

Summary Introduction