Aging and Human Lifespan

Biology ⇒ Human Biology

Aging and Human Lifespan starts at 9 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Aging and Human Lifespan. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.

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'.

Explain the difference between lifespan and life expectancy.

Explain the role of free radicals in the aging process.

Explain the role of stem cells in tissue repair and how this changes with age.

List two lifestyle factors that can influence human lifespan.

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.

Describe the relationship between autophagy and aging, and explain how impaired autophagy can influence age-related diseases.

Discuss the role of epigenetic changes in the aging process and provide one example of how these changes can affect gene expression in older adults.

Explain how cellular senescence acts as both a protective mechanism and a contributor to aging-related diseases.

Explain why the rate of telomere shortening can vary between different cell types and how this variation impacts tissue aging.