4. A cell requires water, minerals and other substances to work normally. But the acovered with a cell membrane. How is it possible?5. Is the structure of nucleus same in all plant and animal cells? Explain.BENDS IN SCIENCE-8 100

4. A cell requires water, minerals and other substances to work normal

1.	4. A cell requires water, minerals and other substances to work normally. But the acovered with a cell membrane. How is it possible?5. Is the structure of nucleus same in all plant and animal cells? Explain.BENDS IN SCIENCE-8 100
Answer» Animal and plant cell differ in their outer layer. In case of animal the membrane which protect the inner contents of the cell is called cell membrane and in plant cell its cell wall. Here we will specifically talk about animal cell. The plasma membrane in animals not only act as a protective layer but it also controls the flow of water, nutrients and minerals. As plasma membrane is porous so it lets some substances to pass through it. In this way it keeps the cell strong and healthy.