G If I see a decreased response after administration of repeated doses of a drug I might suspect that the cell has a) Up regulated a receptor b) Blocked receptor action c) Down regulated a receptor d) The drug has acted as an inverse agonist () More than one of the above

More than one of the above

Explanation:

I strongly recommend sticking with the prescribed dosage of a drug.

A drug works by binding itself to the receptor site of a cell or tissue by non-covalent interactions.

Repeated doses of the same drug however may make the drug start behaving as an inverse agonist by blocking (instead of binding) the receptor site of the cell thus inducing a reduced response instead of an increased response to the drug.  

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

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the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

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