Aging and Human Lifespan
Biology ⇒ Human Biology
Aging and Human Lifespan starts at 9 and continues till grade 12.
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See sample questions for grade 12
Describe how oxidative stress contributes to the aging process.
Describe one way in which caloric restriction may slow the aging process.
Describe the impact of aging on the nervous system.
Describe the role of the immune system in the aging process.
Describe two physiological changes that occur in the cardiovascular system as humans age.
Explain how genetic and environmental factors interact to influence human lifespan.
Explain the concept of 'biological age' versus 'chronological age'.
A researcher is studying two populations of the same species. Population A lives in a polluted urban environment, while Population B lives in a rural area with minimal pollution. Both populations have similar genetic backgrounds. Over several decades, Population A shows a significantly shorter average lifespan than Population B. Explain two biological mechanisms that could account for this difference.
The accumulation of which pigment in cells is considered a marker of aging?
(1) Melanin
(2) Lipofuscin
(3) Hemoglobin
(4) Chlorophyll
Which of the following best describes sarcopenia?
(1) Loss of bone density
(2) Loss of muscle mass
(3) Loss of vision
(4) Loss of hearing
Which of the following is a characteristic of the endocrine system during aging?
(1) Increased hormone production
(2) Decreased hormone sensitivity
(3) Enhanced metabolic rate
(4) Increased growth hormone levels
Which of the following is a common age-related disease?
(1) Type 1 diabetes
(2) Osteoporosis
(3) Measles
(4) Cystic fibrosis
Fill in the blank: _______ are repetitive DNA sequences at the ends of chromosomes that protect them from deterioration.
Fill in the blank: _______ is the process by which the body’s ability to repair and regenerate tissues declines with age.
Fill in the blank: _______ is the term for age-related hearing loss.
Fill in the blank: The gradual decline in reproductive function with age is called _______.
True or False: All species have the same maximum lifespan.
True or False: Apoptosis is a form of programmed cell death that plays a role in aging.
True or False: Telomere shortening is associated with cellular aging.
True or False: The Hayflick limit refers to the maximum number of times a normal human cell can divide.
