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biochemistry

VITAMINS

Topic Name Times Repeated PYQ Asked Priority Study Duration
Vitamins 15 Vitamin B12-Isolated folate supplementation worsening neuropathy -animal products(asked thrice) ,Vitamin D Def, Niacin deficiency-diet rich in maize (asked twice) ,Vitamin B6, Vitamin K-gamma glutamyl carboxylase activation, Vitamin B3-image of cassals necklace,Viatmin B1 , Vitamin C deficiency-decreased collagen, Biotin deficiency, Vitamin B2 deficinecy-Glutathione reductase, Vitamin A deficiency-conjunctival xerosis, Vitamin B9 High 3 hrs including all
Minerals 2 Zinc deficiency,copper deficiency Moderate same as above
Chronic alcoholism 1 With gouty arthritis -increased urate and lactate levels low same as above

CARBOHYDRATE METABOLISM

Topic Name Times Repeated PYQ Asked Priority Study Duration
Glycogen storage disorders 4 Pompes-clinical presentation(2) ,McArdles-Myophosphorylase deficiency, Glycogen storage disorder - Type 0 High 1 hour
Cycles - Insulin:Glucagon ratio 2 Glucose 6 phosphatase , Hormone sensitive lipase activation in low insulin glucagon ratio Moderate 1 hour including rest
Galactosemia 1 Gal PUT deficiency Low same as above
HMP pathway 1 Primaquine induced hemolytic anemia Low same as above
GAGs in corenal transparency 1 Keratan sulfate Low same as above
Hepatic glycogenolysis 1 Responsible for fasting blood sugar Low same as above
PDH complex 1 cellular respiration Low same as above
Cellulose 1 Absorbs least water Low same as above
Glucose transporters 1 Insulin sensitive-GLUT 4 Low same as above

LIPID METABOLISM

Topic Name Times Repeated PYQ Asked Priority Study Duration
Lysosomal storage disorder 6 Gauchers disease-crumpled tissue paer appearance ,glucocerbroside deficiency (5) , Tay Sachs disease-cherry red spot High 2 hours including all
Familial Hypercholesterolemia 3 LDL receptor defect, Achilles tendon xanthoma High same as above
Apolipoprotein CII 1 Familial Chylomicronemia syndrome Low same as above
Carnitine deficiency 1 Muscle biopsy shows fat vacuoles Low same as above
Transportation of fatty acid through inner mitochondrial membrane 1 Carnitine Low same as above

AMINO ACID AND PROTEIN METABOLISM

Topic Name Times Repeated PYQ Asked Priority Study Duration
Alkaptonuria 3 Homogentisic acid 1,2-dioxygenase deficiency , Urine turns black on standing High 1 .5 hour including all
Homocystinuria 2 Cysteine supplementation,Cystathione Beta synthase which needs Vitamin B6 as cofactor High same as above
Phenylketonuria 1 Dihydrobiopterene reductase deficiency Low same as above
UV absorbance of protein 1 Replacing alanine by Tryptopahn increases UV absorbance of protein at 280 nm Low same as above
Protein structure 1 Tertiary sytructire in 3 dimensional Low same as above
NO synthesis 1 From L arginine Low same as above

GENETICS

Topic Name Times Repeated PYQ Asked Priority Study Duration
Autosomal recessive inheritance 1 Cystic Fibrosis -AR Moderate 1.5 hr including all
Non sense mutation 1 Single mutation in nucleotide base pair leading to a termination codon Moderate same as above
DNA packing 1 Histone responsible for DNA packing Moderate same as above
Mismatch repair 1 HNPCC Moderate same as above
Proteasome 1 Function in protein degradation Moderate same as above
RNA editing 1 in syntheis of apolipoprotein B48 Moderate same as above
Chargaff rule 1 Percentage of nucelotides in DNA - THYMINE 28% , CYTOSINE 22% Moderate same as above

OXIDATIVE PHOSPHORYLATION

Topic Name Times Repeated PYQ Asked Priority Study Duration
ETC 1 ETC Moderate 30 minutes including all
Complex IV inhibitors 1 Cyanide is inhibitor Moderate same as above
Mitochondrial Respiration 1 Blocked by oligomycin Moderate same as above

ENZYME DEFECTS

Topic Name Times Repeated PYQ Asked Priority Study Duration
Lesch Nyhan Syndrome 1 Clinical history low 15 minutes

MISCELLANEOUS

Topic Name Times Repeated PYQ Asked Priority Study Duration
Inhibition 2 Competitive- increasing substrate will overcome inhibition, graph and Non competitive Moderate 15 minutes
Van Den Berg reaction 1 Obstructive jaundice - direct positive Low 15 minutes
Lead poisoning 1 Urinary coproporphyrin positive Low 15 minutes