1- PLA2 isozymes
soluble forms are more important
are activated by PKC
are activated by steroids
all of the above

2- Lysophosphatidic acid
is released from DAG by PLA2
acts as a first messenger
activates EDG receptors
all of the above

3- Arachidonic acid is metabolized by lipoxygenases into
prostaglandins
thromboxanes
leukotrienes
EETS

4- Inducible COX
is not inhibited by aspirin
is inhibited by selective inhibitors
generates leukotrienes
the first two are correct

5- Regulates vasodilation
arachidonic acid
HETES
EETS
none of the above

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Answers:

1- PLA2 isozymes
Answer: are activated by PKC

2- Lysophosphatidic acid
Answer: all of the above (is released from DAG by PLA2 AND acts as a first messenger AND activates EDG receptors)

3- Arachidonic acid is metabolized by lipoxygenases into
Answer: leukotrienes

4- Inducible COX
Answer: is inhibited by selective inhibitors

5- Regulates vasodilation
Answer: EETS