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Questions and Answers
According to metabolic theories of aging, which of the following is true about organisms with higher metabolic rates?
According to metabolic theories of aging, which of the following is true about organisms with higher metabolic rates?
- They experience slower aging
- They have a higher production of free radicals (correct)
- They have a lower energy production
- They produce fewer free radicals
What is the relationship between metabolic rate and the production of free radicals?
What is the relationship between metabolic rate and the production of free radicals?
- Lower metabolic rate leads to higher production of free radicals
- Metabolic rate has no impact on the production of free radicals
- Higher metabolic rate leads to higher production of free radicals (correct)
- Higher metabolic rate leads to lower production of free radicals
What is oxidative stress?
What is oxidative stress?
- An imbalance between the production of antioxidants and the body's ability to neutralize free radicals
- An imbalance between the production of free radicals and the body's ability to neutralize them (correct)
- A process that neutralizes free radicals
- A process that accelerates the aging process
Why do organisms with lower metabolic rates tend to have a slower aging process?
Why do organisms with lower metabolic rates tend to have a slower aging process?
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What are free radicals?
What are free radicals?
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Study Notes
Metabolic Theories of Aging
- Organisms with higher metabolic rates tend to have a faster aging process.
Metabolic Rate and Free Radicals
- A higher metabolic rate leads to an increased production of free radicals.
Oxidative Stress
- Oxidative stress occurs when the body's antioxidant defenses are overwhelmed by the presence of free radicals.
Aging Process
- Organisms with lower metabolic rates tend to have a slower aging process because they produce fewer free radicals, which reduces oxidative stress.
Free Radicals
- Free radicals are unstable molecules that can cause cellular damage and contribute to the aging process.
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