BPSC – Combined Competitive Examination · પ્રશ્ન 142

Biological membranes are composed of:

Lipids and proteins in varying combinations specific to each species, cell type and organelle
Lipids only
Proteins only
None of the above

જવાબ બતાવો અને સમજૂતી

જવાબ: (A) Lipids and proteins in varying combinations specific to each species, cell type and organelle

સમજૂતી

Membranes are lipid–protein assemblies (with some carbohydrate) whose ratio differs between cell types.

(A) સાચો
Correct: the fluid mosaic model: a lipid bilayer with proteins, varying by cell type.
(B) ખોટો
Wrong: membranes also contain proteins.
(C) ખોટો
Wrong: membranes also contain lipids.
(D) ખોટો
Wrong: option A is correct.