The memory card, being digital, should store exactly what the camera gives it to store.
However, two important aspects to consider:
1. A really cheap card will perhaps run a greater risk of becoming corrupt and that will definitely affect your pictures, making them unreadable. Go for a brand you can trust.
2. The speed of the card should be a consideration. Cards with low writing speed take longer to store the image, and you may find yourself having to wait a tick for that next shot if you like to shoot several pictures rapidly in a row.