2026 Cell: The Unit of LifeCell membrane structure Hard Question 4 of 137 in Cell: The Unit of Life

Select the correct statements regarding cell membrane in eukaryotic cell. I. Membrane of human RBCs has approximately 52% protein. II. Major phospholipids are arranged in a bilayer. III. Extensions of the plasma membrane into the cell form mesosomes. IV. Tails towards the inner part of lipids are hydrophobic and thus protected from aqueous medium. V. Glycocalyx is present on the outer surface of the plasma membrane. Choose the CORRECT answer from the options given below:

A I, III and V only
B II, III and V only
C III, IV and V only
D I, II and IV only

The answer is D.

Solution

Official answer key selects (D). Statement V (glycocalyx on the outer surface) is a standard fact from NCERT, so a learner may find this key debatable; transcribed here exactly as given in the official answer key.

Cell: The Unit of Life in past papers

137 questions from this chapter have appeared across 27 exam years.