NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which phrase best describes the property of selective permeability?
A
some molecules pass
B
all ions pass
C
large molecules pass
D
all molecules pass
Explanation: 

Detailed explanation-1: -Expert-Verified Answer. the phrase which best describes the property of selective permeability is some molecules . the membrane is said to be selective permeable when it allows the movement of the some selective molecules while do not allow the moving of other molecules through it.

Detailed explanation-2: -Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell. This is important for the cell to maintain its internal order irrespective of the changes to the environment.

Detailed explanation-3: -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-4: -Selectively permeable membrane is the one which allows entry of certain substances, exit of some substances but prevents the passage of other substances, through it.

Detailed explanation-5: -The cell membrane is called selectively permeable as it only allows specific molecules to pass. Only specific molecules like water and gaseous molecules can pass through the cell membrane directly.

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