Hand converted with online PokerStrategy.com hand converter:
$0.25/$0.5 Fixed-Limit Hold'em (6 handed)
Preflop: Hero is SB with J:c, Q:h.
MP2 folds, MP3 calls, 2 folds, Hero raises, BB folds, MP3 calls.
Flop: (5 SB) 5:s, 7:d, K:d (2 players)
Hero bets, MP3 calls.
Turn: (3.5 BB) 4:h (2 players)
Hero bets, MP3 calls.
River: (5.5 BB) 4:c (2 players)
Hero checks, MP3 checks.
Final Pot: 5.5 BB.
Check/fold turn?
Yes I think with the 4 
you can check/fold the turn as it completes too many straightdraw (and even if it gives him only a pair). Against blanks you may bet/fold turn and check/call river as you should be often enough ahead against a draw. (Calldown with Q-high is pretty advanced. If you don't feel comfortable with it better check/fold turn or bet/fold turn, check/fold river as default depending on the turncard.)
