True or false: penicillin, ampicillin, and bacitracin work by disrupting the synthesis of ribosomes true or false: drugs that disable or kill infectious bacteria are called… which one of the following about cells is true a. the magnification of a transmission electron microscope is about 10 times greater than the typical light microscope b. organelles are small parts of cells with specific functions c. cell theory states that all living things have a well-defined nucleus bordered by s membranous envelope d. the genetic material of eukaryotic cells is housed in the endoplasmic reticulu

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.

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).

What materials must dams have to produce electricity, and what must occur?