NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL ORGANELLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which statement best describes a cell membrane?
A
it is found only in animal cells
B
it controls reproduction in the cell
C
it is a cell
D
it controls passage of materials into the cell
Explanation: 

Detailed explanation-1: -The correct answer is (C) A flexible lipid double layer. The cell membrane is often referred to as a “fluid mosaic, ” a flexible structure containing phospholipids as well as some proteins and other important molecules.

Detailed explanation-2: -The cell membrane is semipermeable (or selectively permeable). It is made of a phospholipid bilayer, along with other various lipids, proteins, and carbohydrates.

Detailed explanation-3: -The cell membrane is a thin semi-permeable membrane that surrounds the cytoplasm of a cell. It is living in nature and mainly composed of lipids and proteins.

Detailed explanation-4: -The cell membrane is said to be selectively permeable. Small molecules, for example, may pass through the membrane. If no energy is required for substances to pass through the membrane, the process is called passive transport.

There is 1 question to complete.