(11) AK all parts of hand not really sure on

[golfcchs]

Party Poker No-Limit Hold'em Tourney, Big Blind is t15 (10 handed) converter

UTG+1 (t800)
UTG+2 (t1050)
MP1 (t435)
MP2 (t920)
MP3 (t740)
CO (t925)
Button (t760)
SB (t770)
Hero (t800)
UTG (t800)

Preflop: Hero is BB with K[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, UTG+2 calls t15, <font color="#666666">2 folds</font>, <font color="#CC3333">MP3 raises to t75</font>, <font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to t175</font>, UTG+2 folds, MP3 calls t100.

Flop: (t372.50) 3[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t250</font>, <font color="#CC3333">MP3 raises all in</font>, Hero calls t315.

Turn: (t937.50) Q[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>

River: (t937.50) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>

Final Pot: t937.50

So I really dont know if any or all of the plays I made on this hand are correct. First of all what do you do on the fold? Do you call, or rerais, and if so how much? Then on the folp do you continue bet, and if so is it a push or some other bet? Lastly the call and the reraise I was getting 4 to 1 and I strongly felt MP3 had mid or low pp. Do you like the call, or do you fold? Thanks in advance for the help.