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USMLE - Chapter 1 - Biochemistry
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Chromatin Structure Overview to Histone Deacetylation6Topics
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Nucleoside and Nucleotide Basics to Base Pairing and DNA Stability5Topics
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Introduction to Nucleotide Synthesis Inhibition to Broad-Spectrum Inhibitors and CPS Enzymes5Topics
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Purine Metabolism and Salvage Pathways to Genetic Code: Commaless and Universal6Topics
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DNA Replication Basics to Detailed Lagging Strand Synthesis7Topics
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DNA Repair: Nonhomologous End Joining to DNA Repair: Mismatch Repair5Topics
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Introduction to DNA Mutations to Lac Operon Gene Expression States8Topics
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Page 1 — Eukaryotic Gene Overview to Page 1 — RNA Processing: Splicing & Fate8Topics
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Eukaryotic RNA Polymerases: Types to Splicing Diagram: Lariat & Mature mRNA7Topics
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Introns vs Exons: Basic Definitions to Visualizing Alternative Splicing and Protein Diversity4Topics
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tRNA Structure Overview to mRNA Stop Codons6Topics
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Protein Synthesis: Initiation Phase to Posttranslational Modifications: Chaperone Proteins6Topics
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Cell Cycle Phases and Regulation to p53 and Apoptosis Induction7Topics
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Rough Endoplasmic Reticulum Functions to Specific Vesicular Trafficking Proteins7Topics
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Peroxisome Functions to Drugs Affecting Microtubules5Topics
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Cilia Structure: Motile Cilia and Basal Body to K+ Pump Inhibition6Topics
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Collagen Introduction and Type I to Collagen Synthesis: Maturation and Fibril Formation6Topics
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Osteogenesis Imperfecta: Genetic Basis to Menkes Disease6Topics
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Elastin: Structure and Composition to PCR Cycle: Elongation and Repetition8Topics
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Elastin: Structure and Composition
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Elastin Cross-linking and α1-Antitrypsin Deficiency
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Marfan Syndrome: Genetics and Physical Manifestations
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Marfan Cardiovascular Complications & Homocystinuria Overview
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Differentiating Marfan Syndrome and Homocystinuria
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Introduction to PCR: Amplifying DNA
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PCR Cycle: Denaturation and Annealing
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PCR Cycle: Elongation and Repetition
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Elastin: Structure and Composition
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CRISPR to Interpreting Southern Blot Results5Topics
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Flow Cytometry: Basics and Applications to ELISA: Principle and Uses4Topics
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Karyotyping: Principles and Applications to Molecular Cloning: Process and Applications4Topics
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Transgenic Strategies in Mice to Epistasis and Aneuploidy7Topics
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Genetic Terms: Dominant Negative & Linkage Disequilibrium to Conditions for Hardy-Weinberg Equilibrium7Topics
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Introduction to Imprinting Disorders to Visualizing Normal vs. Mutated Chromosomes6Topics
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Autosomal Dominant Inheritance to Pedigree Chart Symbols6Topics
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Autosomal Dominant Disorders to CFTR Channel Function Diagram11Topics
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Autosomal Dominant Disorders
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Autosomal Recessive Disorders
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Cystic Fibrosis: Genetics
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Cystic Fibrosis: CFTR Defect
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CFTR Dysfunction and Mucus Thickening
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Cystic Fibrosis: Diagnosis
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CF Pulmonary Complications
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CF Gastrointestinal and Reproductive Complications
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CF Treatment: Mucus Clearance and Inflammation
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CFTR Modulators in Treatment
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CFTR Channel Function Diagram
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Autosomal Dominant Disorders
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X-linked Recessive Diseases Introduction to Myotonic Dystrophy6Topics
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Mitochondrial Diseases: MELAS & MERRF to Trinucleotide Repeat Diseases: Fragile X & Friedreich Ataxia8Topics
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Mitochondrial Diseases: MELAS & MERRF
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Leber Hereditary Optic Neuropathy
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Rett Syndrome Characteristics
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Fragile X Syndrome: Genetics & Premutation
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Fragile X Syndrome: Full Mutation Features
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Trinucleotide Repeat Diseases: Huntington
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Trinucleotide Repeat Diseases: Myotonic Dystrophy
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Trinucleotide Repeat Diseases: Fragile X & Friedreich Ataxia
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Mitochondrial Diseases: MELAS & MERRF
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Autosomal Trisomies & Down Syndrome Overview to Second Trimester Screening & NIPT8Topics
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Genetic Disorders: Chromosomes 3-7 to Williams Syndrome6Topics
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Polyunsaturated Essential Fatty Acids to Water-Soluble Vitamins: Deficiencies and Coenzyme Functions5Topics
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Vitamin A: Functions and Forms to Vitamin B1: Beriberi Forms7Topics
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Vitamin B2: Function and Deficiency to Vitamin B6 Deficiency Symptoms7Topics
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Vitamin B7 (Biotin): Function and Deficiency to Vitamin B9 (Folate): Deficiency, Causes, and Prevention3Topics
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Vitamin B12: Name, Function, and Sources to Vitamin C: Excess and Toxicity7Topics
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Vitamin D Introduction and Function to Vitamin E Deficiency and Excess Effects6Topics
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Vitamin K Function to Marasmus: Characteristics and Visuals7Topics
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Ethanol Metabolism Overview to Pharmacological Interventions in Alcohol Metabolism5Topics
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Enzyme Terminology: Kinase & Phosphorylase to Rate-Determining Enzymes: Lipid Metabolism7Topics
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Enzyme Terminology: Kinase & Phosphorylase
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Enzyme Terminology: Phosphatase, Dehydrogenase, Hydroxylase
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Enzyme Terminology: Carboxylase, Mutase, Synthase/Synthetase
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Rate-Determining Enzymes: Glycolysis, Gluconeogenesis, TCA Cycle
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Rate-Determining Enzymes: Glycogenesis, Glycogenolysis, HMP Shunt
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Rate-Determining Enzymes: Nucleotide Synthesis, Urea Cycle
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Rate-Determining Enzymes: Lipid Metabolism
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Enzyme Terminology: Kinase & Phosphorylase
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Key Metabolic Locations to Glucose Breakdown and NADPH Production4Topics
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ATP Production Pathways to Hexokinase vs Glucokinase: Kinetics & Regulation5Topics
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Glycolysis Net Reaction to PDC: α-Ketoglutarate & Arsenic7Topics
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Pyruvate Dehydrogenase Deficiency to The TCA Cycle (Krebs Cycle)3Topics
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ETC Overview to Fatty Acids in Gluconeogenesis9Topics
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Introduction to Pentose Phosphate Pathway to G6PD Deficiency: Biochemical Mechanism of Oxidative Stress7Topics
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Essential Fructosuria to Galactose Metabolism Pathway & Summary6Topics
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Sorbitol Pathway and Diabetic Complications to Acidic and Basic Amino Acids6Topics
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Urea Cycle Introduction to Hyperammonemia Treatment5Topics
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Ornithine Transcarbamylase Deficiency to Catecholamine Synthesis and Degradation5Topics
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Phenylketonuria: Basic Defect and BH4 Deficiency to Alkaptonuria7Topics
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Homocystinuria: Genetic Causes to Methylmalonic Acidemia: Deficiency & Metabolism6Topics
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Glucagon to Glycogen Disorders and Enzymes6Topics
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Introduction to Glycogen Storage Diseases to McArdle Disease (Type V)6Topics
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Lysosomal Storage Diseases Intro & Tay-Sachs to Lysosomal Storage Disease Pathway6Topics
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Fatty Acid Synthesis Overview to Medium-Chain Acyl-CoA Dehydrogenase Deficiency4Topics
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Hepatic Ketone Body Synthesis to Adipocyte Metabolism: Fed State4Topics
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Metabolic Fuel Use: Initial Exercise to Starvation After Day 3 and Stored Energy Depletion7Topics
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Metabolic Fuel Use: Initial Exercise
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Metabolic Fuel Use: Longer Exercise and Caloric Values
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Fasting and Starvation: Introduction and Fed State
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Fasting and Starvation: Between Meals
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Starvation Days 1-3: Fuel Shifts
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Starvation Days 1-3: Gluconeogenesis and RBCs
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Starvation After Day 3 and Stored Energy Depletion
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Metabolic Fuel Use: Initial Exercise
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Dietary Lipid Absorption and Chylomicron Entry to IDL, LDL Formation, and Uptake4Topics
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Key Enzymes in Lipid Transport - Part 1 to Major Apolipoproteins - Part 25Topics
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Lipoprotein Functions: Chylomicron & VLDL to Familial Dyslipidemias: Dysbetalipoproteinemia & Hypertriglyceridemia5Topics
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Aminoacyl-tRNA synthetase (uses ATP, 1 unique enzyme per respective amino acid) and binding of charged tRNA to the codon are responsible for the accuracy of amino acid selection. Aminoacyl-tRNA synthetase matches an amino acid to the tRNA by scrutinizing the amino acid before and after it binds to tRNA. If an incorrect amino acid is attached, the bond is hydrolyzed. A mischarged tRNA reads the usual codon but inserts the wrong amino acid.
Quiz
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1. A mischarged tRNA will read an incorrect codon on the mRNA.
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