AQ against unknown 25NL

[QmT]

MP just recently joined the table and is unknown as mentioned. I feel like I played this horrble. How would you play this hand? and given this play would you call or fold the turn all-in?



Full Tilt No-Limit Hold'em, $0.25 BB (6 handed) Full-Tilt Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

BB ($10.10)
UTG ($28.25)
MP ($26.10)
Hero ($29.70)
Button ($9.65)
SB ($24.15)

Preflop: Hero is CO with Q, A.
1 fold, MP raises to $0.85, Hero calls $0.85, Button calls $0.85, 1 fold, BB calls $0.60.

Flop: ($3.50) Q, 4, J (4 players)
BB checks, MP bets $2.75, Hero raises to $7.75, Button folds, BB folds, MP raises to $28 (All-In), Hero ?