1. What happens to raisins placed in water for a long period of time
 A: Their texture and size change
B:  Their size and appearance change 
 C: Their appearance and texture change
 D: Their texture, size and appearance change
 2.Which is an example of active transport?
 A:water molecules moving into the root of the cells 
B:particles moving out of the lumen into the blood across its concentration gradient
 C:magnesium ions moving out of the root hair cells
D: magnesium ions moving into the root hair cells