BPSC Prelims

2025

General

Bihar Special 15

All Questions 15 Climate 1 Demography 1 Economy 1 Education 1 Employment 1 Environment 1 Geography 1 Minerals 2 Parks 1 Policy 1 Projects 1 Schemes 1 Sports 1 Symbols 1

Current Affairs 16

All Questions 16 Awards 2 Cinema 2 Culture 1 Defence 2 Environment 2 International 3 Literature 1 National 1 Reports 1 Tech 1

Economy 11

All Questions 11 Agriculture 1 Employment 1 Forex 1 Global Trade 1 Industry 2 Infrastructure 1 Poverty 2 Schemes 1 Trade 1

Environment 2

All Questions 2 Forest Report 1 Schemes 1

General Awareness 2

All Questions 2 Culture 1 Days 1

General Science 29

All Questions 29 Biology 12 Chemistry 8 Physics 9

Geography 14

All Questions 14 Agriculture 1 GI Tags 1 Institutions 1 Parks 1 Physical 3 Rivers 3 World 4

Government Schemes 2

All Questions 2 Health 1 Urban 1

History 30

All Questions 30 Ancient 6 Bihar Special 2 Literature 1 Medieval 3 Modern 18

Mental Ability 10

All Questions 10 Age Problems 1 Alphabet Test 1 Blood Relations 1 Classification 1 Coding-Decoding 2 Direction Test 1 Mathematical Operations 1 Missing Number 1 Ranking 1

Physics 1

All Questions 1 Force and Laws of Motion 1

Polity 14

All Questions 14 Attorney General 1 DPSP 1 Executive 1 Finance Commission 1 Fundamental Rights 1 Judiciary 1 Lists 1 Panchayati Raj 2 Parliament 3 Schedules 1 State Legislature 1

Science & Tech 3

All Questions 3 Policy 1 Space 2

World History 1

All Questions 1 Culture 1

General Science

Biology

EN हिंदी

✕

BPSC Prelims 2025 General 📅 13 Sep, 2025

The biological membranes are composed of:

A

Lipids and proteins in varying combinations which are specific to each species, cell type and organelle

B

Lipids only

C

Proteins only

D

None of the above

Result Summary

APEDIA

BPSC Prelims

2025 • 13 Sep, 2025 • General

The biological membranes are composed of:

Correct Answer

Lipids and proteins in varying combinations which are specific to each species, cell type and organelle

Model: Fluid Mosaic Model (Singer & Nicolson). [Image of fluid mosaic model cell membrane] Composition: Mainly Phospholipids (bilayer) and Proteins (inte......

💡 Analysis & Explanation

Model ▼

Fluid Mosaic Model (Singer & Nicolson).
[Image of fluid mosaic model cell membrane]

Composition ▼

Mainly Phospholipids (bilayer) and Proteins (integral and peripheral).

Variation ▼

The ratio varies (e.g., Erythrocytes have ~52% protein, 40% lipids). Carbohydrates are also present.