Oparin proposed a primordial soup hypothesis for the formation of life on early Earth. He outlined conditions that were on Earth that would give rise to primitive life. Upon a simulated laboratory experiment, he observed evidence that supported his theory, Which
pieces of evidence would support the primordial soup hypothesis outlined by Oparin? Select ALL that apply.
)
A)
The presence of amino acids and precursors to proteins,
B)
The production of oxygen gas from the decomposition of water.
The formation of carbon monoxide from the breakdown of carbon dioxide.
D)
The formation of long hydrocarbon chains from water and carbon dioxide.
E)
The formation of coacervates and primitive cells were observed in
simulated lab conditions,

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).