Other than the proteins that they encode, what is a major difference between cell-specific and housekeeping genes?
a. Cell-specific genes are expressed only in a single cell type; housekeeping genes are expressed in all cell types.
b. Cell-specific genes have promoter proximal elements and enhancers; housekeeping genes have only promoter
proximal elements.
c. Cell-specific genes have promoter proximal elements that use cell-specific activators; housekeeping genes use
"universal" activators.
d. Cell-specific genes are only found in certain cell types; housekeeping genes are found in all cell types.
e. Cell-specific genes have promoter proximal elements that use "universal" activators; housekeeping genes have
promoter proximal elements that respond only to specific activators.
ANSWER: c
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