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Assertion (A): Muscle fibers are classified as red and white fibers based on the amount of myoglobin present in them.
Reason (R): Red fibers contain more myoglobin, which enhances their ability to store oxygen and sustain aerobic metabolism.
  • a)
    If both Assertion and Reason are true and Reason is the correct explanation of Assertion
  • b)
    If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
  • c)
    If Assertion is true but Reason is false
  • d)
    If both Assertion and Reason are false
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Assertion (A): Muscle fibers are classified as red and white fibers ba...
- Assertion (A) is true: Muscle fibers are indeed classified into red and white fibers based on myoglobin content.
- Reason (R) is also true: Red fibers do contain more myoglobin, which allows for better oxygen storage and supports aerobic metabolism.
- Since the reason provided accurately explains why muscle fibers are classified this way, the correct option is Option A.
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Most Upvoted Answer
Assertion (A): Muscle fibers are classified as red and white fibers ba...
Understanding Muscle Fibers
Muscle fibers are essential components of the muscular system, and they can be classified into two main types: red fibers and white fibers. This classification is primarily based on the amount of myoglobin present in each type.
Assertion (A): Muscle fibers are classified as red and white fibers based on the amount of myoglobin present in them.
- Red fibers, also known as slow-twitch fibers, contain a high concentration of myoglobin.
- White fibers, or fast-twitch fibers, have lower myoglobin levels.
Reason (R): Red fibers contain more myoglobin, which enhances their ability to store oxygen and sustain aerobic metabolism.
- Myoglobin is a protein that binds oxygen, allowing muscle cells to store oxygen for prolonged periods.
- The high myoglobin content in red fibers enables them to perform well during endurance activities, supporting aerobic metabolism.
Conclusion: Why Option A is Correct
Both the assertion and reason are true, and the reason provides a correct explanation for the assertion:
- The classification of muscle fibers based on myoglobin content directly correlates with their physiological functions.
- Red fibers' ability to store oxygen due to high myoglobin content is pivotal for their role in sustained aerobic activities.
In summary, the classification of muscle fibers as red and white indeed hinges on myoglobin levels, with red fibers excelling in oxygen storage and aerobic metabolism. Therefore, the correct answer is option 'A' because both statements are true, and the reason accurately explains the assertion.
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Assertion (A): Muscle fibers are classified as red and white fibers based on the amount of myoglobin present in them. Reason (R): Red fibers contain more myoglobin, which enhances their ability to store oxygen and sustain aerobic metabolism.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'A'. Can you explain this answer?
Question Description
Assertion (A): Muscle fibers are classified as red and white fibers based on the amount of myoglobin present in them. Reason (R): Red fibers contain more myoglobin, which enhances their ability to store oxygen and sustain aerobic metabolism.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'A'. Can you explain this answer? for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Assertion (A): Muscle fibers are classified as red and white fibers based on the amount of myoglobin present in them. Reason (R): Red fibers contain more myoglobin, which enhances their ability to store oxygen and sustain aerobic metabolism.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): Muscle fibers are classified as red and white fibers based on the amount of myoglobin present in them. Reason (R): Red fibers contain more myoglobin, which enhances their ability to store oxygen and sustain aerobic metabolism.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'A'. Can you explain this answer?.
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