Yes, put the cable's ends next to each other and look through the RJ-45 jack. You'll see that the different wires in the cable are colour-coded. With a straight through cable, the colours are in exactly the same order on both ends of the cable. With a crossover cable, four wires are switched.
I don't know by heart which ones are switched but this doesn't really matter : if both ends of your cables have got the same order colour coding, you've got the wrong type of cable.