Last year, drasko went hiking for five hours and found it quite difficult. he also has stiffness in his joints and hips. which biological theory of aging would theorize that drasko's aging was due to the decay of tiny cellular bodies that supply energy for cell function, growth, and repair?

What is the best-known carbohydrate?

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun

The kidney filters potentially toxic substances in the blood, and thus “clears” the blood of those substances. this clearance function is dependent upon and proportional to the diffusion gradient of the substance across filtering capillaries, i.e. if the concentration of the substance is doubled, twice as much will be cleared from each ml of blood that is filtered. suppose that the body produces a constant amount of a substance x per unit of time. the kidneys eliminate substance x at a rate directly proportional to the concentration of the substance and the volume of blood cleared each minute (c): elimination = c × [x], where [x] is the steady-state concentration of substance x. imagine an individual with an initial concentration of x equal to [x]0 who develops kidney disease. her baseline clearance c0 drops to one half of the original (½c0). what is the new steady state concentration of x? (for simplicity, assume that substance x is 100% filtered by the kidney).