The process of transcription and splicing of mrna is shown above. what statement accurately describes these two steps? a) transcription and splicing only occur in eukaryotic cells. transcription and splicing both occur in the nucleus. b) transcription and splicing only occur in prokaryotic cells. transcription and splicing both occur in the cytosol. c) transcription occurs only in prokaryotic cells in the cytosol while splicing occurs only in eukaryotic cell sin the nucleus. d) transcription and splicing only occur in eukaryotic cells. transcription occurs in the nucleus while splicing occurs in the cytosol.

What do all macromolecules have in common with each other? oa. they all are formed from the same elements.ob. they all have major roles in cell membranesoc. they all act as catalysts in the body.od. they all have peptide bonds between carbon atoms.

How does the nervous system affect the excretory system?

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).