cell organelles

Question 1

functions of cell membrane

Answer 1

enclose other cell contents
controls movement of substances in and out of the cell

Question 2

properties of a cell membrane

Answer 2

1)semi permeable/selectively permeable-cell membrane has pores that allow molecules of small sizes to pass but not with large sizes
2)sensitivity to changes in temp and ph-cell membrane has proteins that are destroyed by high temp and extreme ph
this affects the normal function of the cell membrane
3)possession of electric charges/it is polarized/polarization-contains neg and pos charges.
positive on the outer side and negative on the inside
this affects the manner substances move in and out of the cell.
also affects the cell membrane to detect changes in the environment

Question 3

adaptation of cell membranes

Answer 3

it has pores for semi permeability

it is thin red distance hence faster movement of materials

it is polarized to allow movements in and out of the cell
and to detect changes in the environment