Transcription in eukaryotes requires which of the following in addition to RNA polymerase?
A)...
Biology, 12.02.2020 05:45 nathand200127
Transcription in eukaryotes requires which of the following in addition to RNA polymerase?
A) the protein product of the promoter
B) ribosomes and tRNA
C) aminoacyl synthetase
D) start and stop codons
E) several transcription factors (TFs)
Answers: 2
Biology, 22.06.2019 06:50
The kidney filters potentially toxic substances in the blood, and thus βclearsβ 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 Γ [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 (Β½c0). what is the new steady state concentration of x? (for simplicity, assume that substance x is 100% filtered by the kidney).
Answers: 1
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