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πŸ“– 1. The Foundations of Biochemistry

πŸ“– From Principles of Biochemistry β€’ 1147 questions available

About 1. The Foundations of Biochemistry

Foundations of Biochemistry is the opening chapter that establishes the core chemical and biological principles needed to understand life at a molecular level. It begins by defining the key classes of biomoleculesβ€”carbohydrates, lipids, proteins, and nucleic acidsβ€”and explains how their unique structures determine their functions in cells. The chapter then introduces the concept of cellular organization, comparing prokaryotic and eukaryotic cells, and highlights the importance of water as the solvent for all biochemical reactions, focusing on its polarity, hydrogen bonding, and role in maintaining pH through buffers.

Moving from structure to energy, the chapter covers thermodynamics in living systems, explaining how cells obtain, store, and use energy via ATP and coupled reactions. It introduces enzymes as biological catalysts that speed up reactions without being consumed, and discusses factors like activation energy and specificity. Finally, the foundations touch on metabolic pathwaysβ€”the organized sequences of chemical reactionsβ€”and the principle of dynamic steady state, where cells maintain internal balance while constantly exchanging matter and energy with their surroundings. These ideas form the essential toolkit for exploring all subsequent topics in biochemistry.

Practice MCQs for 1. The Foundations of Biochemistry. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

πŸ”„ Last updated: 2026-09-02

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πŸ“Œ Topics in this Chapter

Actin filaments structure and function
13 MCQsView β†’
Activation energy and enzymes
15 MCQsView β†’
Amino functional group properties
8 MCQsView β†’
Anabolism synthetic energy requiring reactions
14 MCQsView β†’
Archaea (archaebacteria)
13 MCQsView β†’
ATP as energy carrier in cells
12 MCQsView β†’
Autotrophs vs Heterotrophs carbon sources
15 MCQsView β†’
Bacteria (eubacteria)
15 MCQsView β†’
Biological Molecular Complexes
8 MCQsView β†’
Biomolecules and Chemical Evolution
12 MCQsView β†’
Carbonyl functional group properties
8 MCQsView β†’
Carboxyl functional group properties
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Catabolism degradative energy yielding reactions
13 MCQsView β†’
Cell dimensions and oxygen diffusion
15 MCQsView β†’
Cell fractionation method
8 MCQsView β†’
Cell structure and functional units
15 MCQsView β†’
Cellular Foundations
13 MCQsView β†’
Chemical Foundations in Biochemistry
14 MCQsView β†’
Chiral centers enantiomers diastereomers
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Chloroplast structure photosynthesis
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Cis-trans isomers geometric isomerism
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Common functional groups in biochemistry
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Complementary base pairing A-T G-C
13 MCQsView β†’
Configuration in biochemistry
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Conformation rotation about single bonds
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Cytoskeleton organizes cytoplasm
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D and L system for amino acids and carbohydrates
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Differential Centrifugation and Cell Fractionation
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DNA as template for replication and repair
13 MCQsView β†’
DNA double helix structure
9 MCQsView β†’
Dynamic steady state vs equilibrium in organisms
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Endoplasmic Reticulum Structure and Functions
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Endosymbiosis theory eukaryotic cells
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Energy and matter transformation in organisms
14 MCQsView β†’
Energy coupling in biological reactions
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Energy required to maintain order in organisms
13 MCQsView β†’
Enthalpy H in biological systems
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Enzymes catalyze chemical reactions
13 MCQsView β†’
Enzymes lower activation energy
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Equilibrium constant and Gibbs free energy
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Escherichia coli as a model prokaryote
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Eukarya (eukaryotes)
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Eukaryotic cell organelles
8 MCQsView β†’
Evolutionary Foundations biochemistry
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Exergonic vs endergonic reactions
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Feedback inhibition in metabolism regulation
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First cell chemoheterotroph
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First law of thermodynamics energy conservation
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Functional genomics gene function
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Functional groups in biomolecules
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Genetic continuity in DNA
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Genetic Foundations
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Genomic comparisons in medicine
8 MCQsView β†’
Gibbs free energy equation Ξ”G=Ξ”H-TΞ”S
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Hydroxyl functional group properties
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In vitro vs in vivo limitations
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Intermediate filaments structure and function
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isopycnic centrifugation
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Lipids hydrocarbon derivatives structure
13 MCQsView β†’
Lithotrophs vs Organotrophs electron sources
15 MCQsView β†’
Louis Pasteur and optical activity
14 MCQsView β†’
Lysosomal Function and Intracellular Digestion
8 MCQsView β†’
Metabolic pathways in cells
13 MCQsView β†’
Metabolites and metabolome in cells
14 MCQsView β†’
Microtubules structure and function
13 MCQsView β†’
Miller Urey experiment chemical evolution
10 MCQsView β†’
Mitochondrial Structure and Function
8 MCQsView β†’
Molecular weight vs molecular mass daltons kDa
14 MCQsView β†’
Mutations and natural selection evolution
11 MCQsView β†’
Nucleic acids DNA RNA nucleotide polymers
13 MCQsView β†’
Nucleus structure and function
8 MCQsView β†’
Organelle isolation by cell fractionation
8 MCQsView β†’
Origin of life and biological evolution
12 MCQsView β†’
Paralogs vs orthologs homologous genes
10 MCQsView β†’
Phosphate functional group properties
8 MCQsView β†’
Phototrophs vs Chemotrophs energy sources
13 MCQsView β†’
Phylogeny evolutionary relationships
11 MCQsView β†’
Physical Foundations biochemistry
15 MCQsView β†’
Polysaccharides sugar polymers
14 MCQsView β†’
Protein folding and chaperones
10 MCQsView β†’
Proteins amino acid polymers
15 MCQsView β†’
Redox reactions and electron flow in biochemistry
15 MCQsView β†’
RNA world hypothesis explained
13 MCQsView β†’
RS system of nomenclature
13 MCQsView β†’
Second law of thermodynamics entropy
13 MCQsView β†’
Self-assembly of supramolecular complexes
13 MCQsView β†’
Stereospecific interactions in biomolecules
14 MCQsView β†’
Structural hierarchy in cellular organization
14 MCQsView β†’
Sulfhydryl functional group properties
8 MCQsView β†’
Supramolecular structures in cells
15 MCQsView β†’
Transcription DNA to RNA
11 MCQsView β†’
Transition state in enzyme catalysis
13 MCQsView β†’
Translation RNA to protein
12 MCQsView β†’
Vacuoles function in plant cells
8 MCQsView β†’
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