Rows and curls are excellent exercises to train your pulling muscles. However, a lot of people use a little too much body English to do them. A little rock is one thing, but if you thrust your hips forward to do a curl, or swing your upper body back to pull the bar during lat pulldowns, you're not helping yourself.
Think about the muscle you want to utilize to do the exercise. Strengthening your mind-muscle connection will make you a better lifter and a more body-aware athlete.
Now get to the gym and get this workout done!