1- Phosphorylation occurs
to activate a protein
to deactivate a protein
at multiple sites in the protein
all of the above

2- Phosphatases and kinases make up __% and __% of the known genome, respectively
0.2-0.3% and 0.8-1.0%
0.3-0.8% and 1.0-2.0%
0.8-1.0% and 0.2-0.3%
1.0-2.0% and 3.0-8.0%

3- Creates a constitutively active Ser/Thr/Tyr kinase
mutation at Lys72
Ser changed to Asp
Lys changed to Asp
all of the above

4- Mechanism involves a single step
PTP
PPM
dual specificity phosphatase
all of the above

5- A PPM phosphatase
PP1
PP2
PP2A
PP2B

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Answers:

1- Phosphorylation occurs
Answer: all of the above ( to activate OR deactivate a protein AND at multiple sites in the protein)

2- Phosphatases and kinases make up __% and __% of the known genome, respectively
Answer: 0.8-1.0% and 0.2-0.3%

3- Creates a constitutively active Ser/Thr/Tyr kinase
Answer: Ser changed to Asp

4- Mechanism involves a single step
Answer: PPM

5- A PPM phosphatase
Answer: PP2