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176 Biochemistry

Cholesterol present in LDL

ARepresents primarily cholesterol that is being removed from peripheral cells
BBinds to a receptor and diffuses across the cell membrane
COn accumulation in the cell inhibits replenishment of LDL receptors
DWhen enters a cell, suppresses activity of acyl-CoA; cholesterol acytransferase ACAT
Biochemistry
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177 Biochemistry

Which statement is false about allosteric regulation?

AIt is usually the mode of regulation for the last step in reaction pathways
BCellular response is faster with allosteric control than by controlling enzyme concentration in the cell
CThe regulation usually is impoant to the conservation of energy and materials in cells
DAllosteric modulators bind non-covalently at sites other than the active site and induce conformational changes in the enzyme
Biochemistry
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