Am i correct on the questions above?

One function of the immune system is to attack the foreign cells to protect the body. in organ translate , the body recongnizes that the new organ is made of foreign cells. wha kind of medicine would you give a patient to increase the chances of transplate success

In general, are there any major differences that you can see? explain

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these