1- Kinases catalyze the formation of
Ser phosphodiesters
Thr phosphomonoesters
Tyr/Mg2+ esters
all of the above

2- Seem to regulate many proteins
phosphatases
kinases
phosphomonoesters
the first two are correct

3- Ser/Thr/Tyr/Kinases
are all PKAs
have a conserved anchor region at the ATP binding site
have an activation or T-loop
all of the above

4- Not a phosphatase gene family
PPP
PPM
threonine phosphatases
tyrosine phosphatases

5- Not a PPP phosphatase
PP2A
calcineurin
PTP
PP2B

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Answers:

1- Kinases catalyze the formation of
Answer: Thr phosphomonoesters

2- Seem to regulate many proteins
Answer: the first two are correct (phosphatases AND kinases)

3- Ser/Thr/Tyr/Kinases
Answer: all of the above (are all PKAs AND have a conserved anchor region at the ATP binding site AND have an activation or T-loop)

4- Not a phosphatase gene family
Answer: threonine phosphatases

5- Not a PPP phosphatase
Answer: PTP