Multiple Choice
Which of the following occurs with inadequate consumption of protein?
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7. Energy and Metabolism
Introduction to Metabolism
Multiple Choice
Which of the following best explains why an iron deficiency negatively impacts athletic performance?
A
Iron acts as a neurotransmitter that stimulates muscle movement.
B
Iron is the main component of muscle fibers responsible for contraction.
C
Iron is required for the synthesis of hemoglobin, which transports oxygen to muscles during exercise.
D
Iron directly provides energy to muscle cells during contraction.
Verified step by step guidance1
Understand the role of iron in the body: Iron is a critical element required for the synthesis of hemoglobin, a protein found in red blood cells that binds and transports oxygen throughout the body.
Recognize the importance of oxygen in athletic performance: Oxygen is essential for cellular respiration, a process that generates ATP (adenosine triphosphate), the primary energy source for muscle contraction during exercise.
Eliminate incorrect options: Iron does not act as a neurotransmitter, nor is it a direct component of muscle fibers responsible for contraction. Additionally, iron does not directly provide energy to muscle cells; its role is indirect through oxygen transport.
Focus on the correct explanation: Without sufficient iron, hemoglobin production is impaired, leading to reduced oxygen delivery to muscles. This limits the muscles' ability to perform efficiently during exercise.
Conclude the reasoning: An iron deficiency negatively impacts athletic performance because it disrupts oxygen transport, which is vital for energy production and sustained muscle activity during physical exertion.
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