OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
All materials can enter and leave the cell
|
|
|
Certain things can enter while others cannot
|
|
|
The cell manually sorts through all materials
|
|
|
Only certain cells can interact with the cell.
|
Detailed explanation-1: -The membrane is selectively permeable because substances do not cross it indiscriminately. Some molecules, such as hydrocarbons and oxygen can cross the membrane. Many large molecules (such as glucose and other sugars) cannot. Water can pass through between the lipids.
Detailed explanation-2: -A selectively-permeable membrane is a membrane that allows only some substances and molecules to pass into or leave the cell. An example of a selectively-permeable membrane is the cell membrane. It allows the passage of only certain types of molecules through diffusion and occasionally by facilitated diffusion.
Detailed explanation-3: -Cell membranes are semipermeable, meaning they have control over what molecules can or cannot pass through.