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BiomoleculesNEET Chemistry · Class 12 · NCERT Chapter 10

2 interactive concept widgets for Biomolecules. Drag any slider, change any number, and watch the formula and the answer update live. Built so you understand how each NEET problem actually works, not just the final number.

Carbohydrate classifier and properties explorer

Click any carbohydrate (glucose, sucrose, maltose, cellulose, glycogen, etc.) to see its class, reducing/non-reducing status, glycosidic linkage type, and key NEET fact. Covers the critical NEET points: sucrose is non-reducing; amylose has alpha-1,4; cellulose has beta-1,4.

Carbohydrate Classifier and Properties Explorer

Click any carbohydrate to see its class, reducing/non-reducing status, glycosidic linkage type, and the NEET-relevant fact. Master sucrose (non-reducing), amylose vs amylopectin (linkage), and cellulose vs starch (alpha vs beta).

Select Sugar
Monosaccharides
Disaccharides
Polysaccharides
Glucose
C₆H₁₂O₆
monosaccharide
Reducing
TypeAldohexose (D-glucose)
Carbon count6C (hexose)
LinkageN/A
MonomersIs itself the monomer
Source / locationBlood sugar; fruit; starch hydrolysis
NEET Key FactMost important monosaccharide. Exists in ring form (alpha/beta pyranose). Free C-1 aldehyde = reducing sugar.
Test resultPositive Tollens, Fehling, Benedict. Turns brick-red Cu₂O.

Vitamin deficiency explorer

All 13 vitamins with fat-soluble vs water-soluble grouping. Click any vitamin to see its chemical name, deficiency disease, symptoms, food sources, and coenzyme form. Includes the full quick-reference table for match-the-following NEET questions.

Vitamin Deficiency Explorer

Click any vitamin to see its chemical name, solubility, deficiency disease, symptoms, and food sources. Covers all 13 vitamins tested in NEET. Fat-soluble (A, D, E, K) are stored in fat; water-soluble (B group, C) are not stored and need regular intake.

Fat-Soluble (A, D, E, K) — stored in body fat
A
D
E
K
Water-Soluble (B complex, C) — not stored, need regular intake
B1
B2
B3
B5
B6
B7
B9
B12
C
Vitamin A
Retinol
Fat-Soluble
Deficiency Disease

Night blindness (nyctalopia) and xerophthalmia

SymptomsDifficulty seeing in dim light. Xerophthalmia: dry cornea, eventually corneal ulceration and blindness. Also impairs immune function.
Food SourcesLiver, fish oils, dairy, carrots (beta-carotene, converted to Vitamin A)
Key FunctionRequired for rhodopsin synthesis in rod cells of the retina. Beta-carotene (orange pigment) is the provitamin form.
Quick Reference: Vitamin-Deficiency Pairs
VitaminNameDeficiency disease
ARetinolNight blindness (nyctalopia) and xerophthalmia
DCalciferol (D₂/D₃)Rickets (children), osteomalacia (adults)
ETocopherolHaemolysis of RBCs (rare in adults
KPhylloquinone (K₁) / Menaquinone (K₂)Impaired blood clotting (haemorrhage)
B1ThiamineBeriberi
B2RiboflavinAriboflavinosis
B3Niacin (Nicotinic acid)Pellagra
B5Pantothenic acidBurning feet syndrome (rare)
B6PyridoxineConvulsions, peripheral neuritis, dermatitis
B7BiotinDermatitis, hair loss, conjunctivitis
B9Folic acid (Folate)Megaloblastic (macrocytic) anaemia
B12CobalaminPernicious anaemia, subacute combined degeneration of spinal cord
CAscorbic acidScurvy

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