What is the purpose of the underlined sentences in the passage? SOMEONE PLEASE ANSWER!​

The picture showed normal blood cells which are around and sickle cells which appear much longer people with sickle-cell suffer from the sickle cell anemia which is inherited diseaseit is caused by a change in gene responsible for production of hemo goblin this type of change is known as an

Which are reasons cells undergo cell division?

The cell membrane controls what enters and leaves the cell. which of the structures in the diagram below is the cell membrane? — f оооо