Cell Biology
Topic-wise MCQ Quiz
Solve topic-wise MCQs with concept-driven explanations.
Built for serious biology learners preparing for competitive exams.
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All Modules
1
Cellular Organization & Architecture
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1.1 Evolution and Classification of Cells
Cell theory · Prokaryotes · Eukaryotes · Endosymbiotic theory
Soon
1.2 Cellular Diversity: Structure and Function
Prokaryotic · Eukaryotic · Viral structure · Cell size
Soon
2
The Plasma Membrane
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2.1 Membrane Structure and Composition
Lipid bilayer · Fluidity · Lipid rafts · Glycoproteins
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2.2 Membrane Proteins
Integral vs peripheral · Transmembrane topology · RBC ghost cells
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2.3 Transport Across Membranes
Diffusion · Active transport · Ion pumps · ABC transporters
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2.4 Bulk Transport
Pinocytosis · Phagocytosis · Receptor-mediated endocytosis
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2.5 Membrane Potential and Cellular pH
Ion distribution · Osmotic balance · Transepithelial transport
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3
Cell Junctions and Adhesion
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3.1 Cell Adhesion Molecules
Cadherins · Integrins · Selectins · Immunoglobulin superfamily
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3.2 Cell Junctions
Desmosomes · Tight junctions · Gap junctions
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4
Extracellular Matrix
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4.1 ECM Components
GAGs · Collagen · Elastin · Fibronectin · Basal laminae
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5
Cytoskeleton
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5.1 Microtubules
Tubulin · Dynamic instability · Cilia and flagella
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5.2 Microfilaments (Actin)
G-actin · F-actin · Myosin motors · Cell motility
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5.3 Intermediate Filaments
Keratins · Vimentin · Lamins · Nuclear lamina
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5.4 Cytoskeletal Organization
Accessory proteins · Cell shape · Morphogenesis
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6
Endomembrane System
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6.1 The Nucleus
Nuclear envelope · Chromatin · Nucleolus · Polytene chromosomes
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6.2 Endoplasmic Reticulum
Rough ER · Signal peptide · Protein folding · Glycosylation
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6.3 Golgi Apparatus
Protein processing · N-linked and O-linked glycosylation
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6.4 Protein Trafficking and Secretion
Secretory pathway · SNARE proteins · Exocytosis
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6.5 Lysosomes and Endosomal System
Lysosomal enzymes · Endocytic pathway · Digestion
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6.6 Peroxisomes
Fatty acid oxidation · Glyoxysomes
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7
Mitochondria and Bioenergetics
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7.1 Mitochondrial Structure
Membranes · Mitochondrial genome · Protein import
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7.2 Oxidative Phosphorylation
Citric acid cycle · ETC complexes · ATP synthase
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7.3 Mitochondrial Dynamics
Fusion · Fission · Mitochondrial motility · MAMs
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8
Chloroplasts
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8.1 Chloroplast Structure and Photosynthesis
Photosystem I & II · Calvin cycle · Light reactions
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9
Cell Signaling and Communication
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9.1 Principles of Cell Signaling
Signal types · Ligands · Receptor classes
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9.2 Intracellular Receptors
Steroid receptor signaling · Nuclear localization
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9.3 G-Protein Coupled Receptors
cAMP · PKA · IP3-Ca2+ · Vision and olfaction
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9.4 Receptor Tyrosine Kinases
Ras/MAPK · PI3K/Akt · JAK-STAT pathway
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9.5 Other Signaling Pathways
cGMP · Nitric oxide · Arachidonic acid metabolites
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9.6 Signaling Regulation
Protein phosphatases · Proteolysis-regulated signaling
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10
Cell Cycle and Division
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10.1 Cell Cycle Phases and Overview
G1, S, G2, M phases · G0 quiescence · DNA replication licensing
Start Quiz
10.2 Cell Cycle Regulation
Cyclins · CDKs · APC/C and SCF · Cohesins
Start Quiz
10.3 Cell Cycle Checkpoints
G1/S checkpoint · Rb protein · p53 · Spindle checkpoint
Soon
10.4 Mitosis and Cytokinesis
Prophase · Metaphase · Anaphase · Telophase · Contractile ring
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10.5 Meiosis
Meiosis I & II · Crossing over · Chromosome reduction
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11
Programmed Cell Death
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11.1 Apoptosis
Extrinsic pathway · Intrinsic pathway · Bcl-2 · Caspases
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11.2 Cell Death Regulation
Neurotrophic factors · IAPs · Senescence
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12
Cancer Biology
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12.1 Molecular Basis of Cancer
Hallmarks of cancer · Oncogenes · Tumor suppressors · p53
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12.2 Cancer Development
Multi-hit hypothesis · Genomic instability · Metastasis · EMT
Soon
13
Protein Targeting and Quality Control
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13.1 Protein Sorting and Targeting
Signal sequences · TOM/TIM · Nuclear localization signals
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13.2 Protein Quality Control
Chaperones · ERAD · Ubiquitin-proteasome · Autophagy
Soon
14
Cellular Culture and Techniques
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14.1 Cell Culture
Culture media · Primary culture · Cell lines · 3D systems
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14.2 Cytotoxicity and Viability Assays
MTT assay · LDH assay · Apoptosis detection
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15
Experimental Methods in Cell Biology
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15.1 Microscopy Techniques
Light · Phase-contrast · Fluorescence · Confocal · EM
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15.2 Cell Separation and Analysis
Cell fractionation · Flow cytometry · Cell sorting
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15.3 Molecular Tracing and Detection
Autoradiography · Immunocytochemistry · Western blot
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15.4 Functional Studies
siRNA · CRISPR/Cas9 · RNAi screens · Yeast two-hybrid
Soon