Guide to Cellular Metabolism and Energy Pathways Study Guide
This guide provides a comprehensive overview of cellular metabolism, focusing on key pathways such as glycolysis and the citric acid cycle. It explains the fundamental principles of energy transformation, redox reactions, and ATP production. The guide also covers the regulation of metabolic processes and their role in both breaking down molecules (catabolism) and building them up (anabolism), offering insights into how cells maintain energy balance and synthesize essential biomolecules.
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Fundamentals of Metabolism and Enzyme Function
An Introduction to Metabolism
Metabolism is the totality of an organism’s chemical reactions involving energy transformations and metabolic pathways.
- metabolism
- energy transformations
- metabolic pathway
- enzyme
- catabolic pathways
- anabolic pathways
- cellular respiration
- bioenergetics
An Introduction to Metabolism and Bioenergetics
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Enzyme Substrate Specificity and Induced Fit
Enzymes catalyze specific reactions by recognizing substrates through induced fit within the active site.
- Substrate specificity
- Induced fit
- Active site
- Catalysis
- Enzyme-substrate interactions
Mechanisms and Factors Affecting Enzyme Activity
- Activation energy
- Enzyme saturation
- Substrate concentration
- Optimal temperature
- Denaturation
- Optimal pH
- Enzyme-catalyzed reaction rate
Enzyme Regulation and Inhibition Mechanisms
Enzymes are regulated through cofactors, inhibitors, allosteric regulation, cooperativity, and feedback inhibition to control metabolic pathways.
- Cofactors
- Enzyme inhibitors
- Competitive inhibitors
- Noncompetitive inhibitors
- Metabolic regulation
- Allosteric regulation
- Cooperativity
- Feedback inhibition
Biology Metabolism Respiration and Photosynthesis Study Guide
A study guide covering metabolism, cellular respiration, fermentation, and photosynthesis.
- metabolism
- catabolism
- anabolism
- bioenergetics
- thermodynamics
- exergonic reactions
- endergonic reactions
- free energy
- ATP
- enzymes
- activation energy
- substrate
- active site
- cofactors
- coenzymes
- enzyme inhibitors
- allosteric regulation
- feedback inhibition
- cellular respiration
- fermentation
Glycolysis, Citric Acid Cycle, and Metabolism
Glycolysis and the citric acid cycle connect to many other metabolic pathways including catabolic and anabolic pathways.
- Glycolysis
- Citric acid cycle
- Catabolic pathways
- Anabolic pathways
- Beta oxidation
- Acetyl CoA
- ATP
- Biosynthesis
- Feedback inhibition
- Metabolic control
Metabolism: Glycolysis, Citric Acid Cycle, and Energy Production
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Energy Transformations and Cellular Respiration Mechanisms
Forms and Transformations of Energy
Energy is the capacity to cause change and can be transferred or transformed between kinetic, thermal, potential, and chemical forms.
- Kinetic energy
- Thermal energy
- Potential energy
- Chemical energy
- Thermodynamics
- First law of thermodynamics
- Second law of thermodynamics
- Entropy
Free Energy, ATP, and Enzyme Catalysis
Biologists follow energy and entropy changes during chemical reactions to determine spontaneity and how ATP powers cellular work through energy coupling and enzymes.
- Gibbs free energy
- Spontaneous processes
- Exergonic and endergonic reactions
- Energy coupling
- ATP hydrolysis
- Phosphorylation
- ATP cycle
- Enzymes
- Activation energy
- Catalysis
Cellular Respiration and Fermentation Overview
Mitochondria in plant and animal cells break down organic molecules through cellular respiration to transform chemical energy in food into ATP.
- Cellular respiration
- Fermentation
- Aerobic respiration
- Anaerobic respiration
- Catabolic pathways
- ATP production
- Oxidizing organic fuels
- Mitochondria
- Glucose
Redox Reactions and ATP Synthesis
Catabolic pathways release energy through oxidation-reduction reactions to synthesize ATP from ADP and phosphate.
- catabolic pathways
- ATP synthesis
- oxidation-reduction reactions
- oxidation
- reduction
- electronegativity
- cellular respiration
- glucose oxidation
Cellular Respiration and Energy Harvest
Cellular respiration oxidizes glucose and other organic molecules through stepwise energy harvest via NAD+ and the electron transport chain.
- cellular respiration
- glucose oxidation
- NAD+
- electron carriers
- dehydrogenases
- electron transport chain
- redox reactions
- oxidative phosphorylation
- glycolysis
- pyruvate oxidation
- citric acid cycle
- chemiosmosis
- ATP synthesis
Cellular Respiration and ATP Production
Cellular respiration harvests chemical energy from glucose through glycolysis, pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation to produce ATP.
- Substrate-level phosphorylation
- Oxidative phosphorylation
- Glycolysis
- Pyruvate oxidation
- Acetyl CoA
- Citric acid cycle
- Electron transport chain
- ATP
Electron Transport Chain and Chemiosmosis
Electrons transferred down the electron transport chain release energy used to pump H+ to create a proton-motive force that drives ATP synthesis.
- electron transport chain
- chemiosmosis
- ATP synthase
- proton-motive force
- H+ gradient
- cellular respiration
- phosphorylation of ADP to ATP
- redox reactions
Fermentation and Anaerobic Respiration Mechanisms
Fermentation and anaerobic respiration enable cells to produce ATP without the use of oxygen through glycolysis and alternate mechanisms to regenerate NAD+.
- Fermentation
- Anaerobic respiration
- Glycolysis
- Alcohol fermentation
- Lactic acid fermentation
- Substrate-level phosphorylation
- NAD+ regeneration
- Facultative anaerobes
- Obligate anaerobes
- Pyruvate
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