Exam 2: Measuring Biological Aging

An increase in slope of the Gompertz mortality function graph would suggest a decrease in the rate of aging.

humans,an increased rate of aging seems to occur:

A current life table uses a hypothetical birth cohort to estimate the death r ate in a population.

Choose the correct statement concerning the identification of a biomarker for aging.

Life expectancy at any age is defined as the average number of years remaining to be lived by those surviving to that age.

The genotype is all or part of the genetic constitution of an individual.

Which of the mortality variables is easily accessible and fairly accurate?

Selective mortality is the confounding effect on data collected in cross-sectional studies when comparing different cohorts.

The Gompertz mortality function accurately describes the trajectory of mortality at all stages of life.

Which is not considered a good practice in science when performing research on laboratory animals?

The ______ life table is useful for species having short life spans or for historical populations having accurate birth and death records.

Nutrition during fetal development and early childhood appears to be a factor that affects the extrinsic rate of aging.

Briefly describe the applications of a current life table.

______ studies compare the average or mean rate of change in a particular physiological system between two or more age groups.

intrinsic rate of aging most closely reflects the impact of ______ on the rate of aging.

Age-specific mortality rate reveals an individual's chance (probability)of dying of a specific cause.

The extrinsic rate of aging most closely reflects the impact of the ______ on the rate of aging.

The collection of data from the same person over several years is called a(n)______.

A cohort is a group of individuals with similar life experiences and ages.

Which variable provides an estimate for the extrinsic rate of aging?