Exercise Physiology: Theory and Application to Fitness and Performance
10th Edition
ISBN: 9781259870453
Author: Scott K Powers, Edward T Howley
Publisher: McGraw-Hill Education
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Question
Chapter 3, Problem 1O
Summary Introduction
To discuss: The function of the cell membrane, nucleus, and mitochondria.
Introduction: A cell is the fundamental, structural, and functional unit of the living organisms, which is bounded by a cell membrane. A cell contains different organelles. Each organelle has its own specific features and functions. Each cellular organelle possesses different structural peculiarities.
Expert Solution & Answer
Explanation of Solution
The functions of the cell membrane are as follows:
- It is a semipermeable barrier that basically separates the cell from extracellular membrane.
- Cell membrane encloses the cellular components.
- This membrane regulates the passage of various types of molecules in or out of the cell.
The functions of nucleus are as follows:
- It contains genetic information in its chromatin.
- It is the control center of the cell.
- Nucleus plays an essential role in cell division.
The functions of mitochondria are as follows:
- They convert the complex form of chemical energy into a simpler form of chemical energy that is adenosine triphosphate (ATP).
- Inside the mitochondria,
cellular respiration occurs, which includes glycolysis, Krebs cycle, electron transport chain, and oxidative phosphorylation. - It is also called as the “power house” of the cell and produces around 95 percentage of the ATP required by the cell.
- Mitochondria can store calcium that helps in maintaining homeostasis of the level of calcium in the cell.
- They regulate the cellular
metabolism and also have roles in apoptosis, thermogenesis, and cell signaling.
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Chapter 3 Solutions
Exercise Physiology: Theory and Application to Fitness and Performance
Ch. 3 - Prob. 1OCh. 3 - Prob. 2OCh. 3 - Prob. 3OCh. 3 - Prob. 4OCh. 3 - Prob. 5OCh. 3 - Prob. 6OCh. 3 - Prob. 7OCh. 3 - Prob. 8OCh. 3 - Prob. 9OCh. 3 - Prob. 10O
Ch. 3 - Prob. 1SACh. 3 - Prob. 2SACh. 3 - Prob. 3SACh. 3 - Prob. 4SACh. 3 - Prob. 5SACh. 3 - Prob. 6SACh. 3 - Prob. 7SACh. 3 - Prob. 8SACh. 3 - Briefly discuss the function of glycolysis in...Ch. 3 - Prob. 10SACh. 3 - Prob. 11SACh. 3 - Prob. 12SACh. 3 - Prob. 13SACh. 3 - Briefly discuss the interaction of anaerobic...Ch. 3 - Prob. 15SACh. 3 - Prob. 16SACh. 3 - Prob. 17SA
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