Myoglobin has a special function in muscle tissue. It:
a. Breaks down glycogen
b. Is a contractile protein
c. Holds a reserve supply of oxygen in the muscle

검증된 단계별 안내

Step 1: Understand the role of myoglobin in muscle tissue. Myoglobin is a protein found in muscle cells that is involved in oxygen storage and transport within the muscle.

Step 2: Review the options given: (a) breaks down glycogen, (b) is a contractile protein, and (c) holds a reserve supply of oxygen in the muscle.

Step 3: Recall that glycogen breakdown is primarily performed by enzymes like glycogen phosphorylase, not myoglobin.

Step 4: Recognize that contractile proteins in muscle include actin and myosin, which are responsible for muscle contraction, not myoglobin.

Step 5: Conclude that myoglobin's special function is to hold a reserve supply of oxygen in muscle tissue, facilitating oxygen availability during muscle activity.

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주요 개념

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Myoglobin Function

Myoglobin is a protein found in muscle tissue that stores and facilitates the transport of oxygen within muscle cells. It acts as an oxygen reserve, ensuring muscles have a steady supply during intense activity or low oxygen conditions.

Muscle Energy Metabolism

Muscle cells rely on oxygen to produce energy efficiently through aerobic respiration. When oxygen is scarce, stored oxygen in myoglobin helps maintain energy production, supporting muscle contraction and endurance.

Contractile Proteins vs. Oxygen Storage Proteins

Contractile proteins like actin and myosin are responsible for muscle contraction, while oxygen storage proteins like myoglobin serve to store oxygen. Understanding this distinction clarifies that myoglobin is not involved in contraction but in oxygen supply.

Myoglobin has a special function in muscle tissue. It:a. Breaks down glycogenb. Is a contractile proteinc. Holds a reserve supply of oxygen in the muscle