Browse our library of concept explainers to get more help on specific subject areas. Find step-by-step explanations with useful examples to help you connect the dots through your homework assignments for any course.
Blood Flow Through The Kidney
Blood Vessels Of The Head And Neck
Body Cavities
Bone Formation And Development
Bone Marrow
Bones Of The Pelvic Girdle
Carbon Bonding
Carboxylic Acids and Their Derivatives
Cell Biology
Cell Division
Cell Membrane
Cell Signaling
Cells and Tissues
Cellular Respiration
Cephalization of Brain
Characteristics Of Life
Chemotaxis
Circulatory System
Cladistics
Communities and Ecosystems
Corona Radiata
Covalent and Ionic Bonds
Digestive System
DNA as the Genetic Material
DNA Fingerprinting and Gel Electrophoresis
DNA Replication
DNA Sequencing
Dual Innervation
Electron Transport Chain
Endocrine System
Evolution
Eye Anatomy And Vision
Fungi
Gastroileal Reflex
Gene Expression
Gene Flow
Gene Interactions
Genetics
Genomics
Gram Staining
Gustation
Hair Structure And Function
Hardy Weinberg Equilibrium
Hearing And Equilibrium
Histology
Hormonal Regulation
Human Body Systems
Human Evolution
Human Excretory System
Human Reproductive System
Immune Disorders
Immunology
Infection and Transmission
Inheritance and Mendelian Genetics
Integumentary System
Interstitial And Appositional Growth
Life Cycle Of Angiosperms
Life Cycle Of Bryophytes
Life Cycle Of Gymnosperms
Life Cycle of Plants
Life Cycle Of Pteridophytes
Metabolism
Microbial Genetics
Microbial Growth
Microbial Taxonomy
Microscopy
Modes of Nutrition
Molecular Markers
Motor Homunculus
Motor Units In Skeletal Muscles
Muscle And Nervous Tissues
Muscular System
Muscular System Disorders
Nail Structure And Function
Nervous and Endocrine Systems
Nervous System
Neuron Structure
Nucleic Acids
Nucleotides
Obesity
Oogenesis
Osmosis
Outgroups
Ovarian and Uterine Cycles
Pharmacokinetics
Phenotype Frequency
Photosynthesis
Phylogenetics
Plant Biometry
Plant Cell
Plant Cell Types
Plant Life Cycle
Plant Morphology and Anatomy
Plant Structure and Growth
Plasmids and Vectors
Platyhelminthes
Population Biology
Prokaryotes Vs Eukaryotes
Protein Expression
Proteins
Quantitative Genetics
R and K Selection
Receptive Relaxation
Regulation of Enzymes
Respiratory System
Sensory Receptors
Sexual Reproduction
Speciation
Sterilization
Structure and Composition of Cell Membrane
Structure And Function of the Appendicular Skeleton
Structure And Function Of The Axial Skeleton
Structure And Function Of The Lymphatic System
Structure And Function Of The Pectoral Girdle
Structure and Function of The Vertebral Column
Suspensory Ligament
Synaptic Knob
Taxonomy
Temporal Summation
The Cardiopulmonary System
The Digestive and Excretory Systems
The Senses
The Skeletal Muscle Contraction Cycle
Thoracic and Abdominal Arteries
Tissue System
Transformation Experiment in Bacteria
Types of Climate
Types Of Joints
Types of Tissues
Viral Replication
Vitamins
What Makes an Organism
Amines
Analytical Tools
Analyzing Infrared Spectra
Angle Strain
Anomer
Aromatic Compounds
Arrhenius Acid
Atomic Structure
Atoms and Molecules
Bond Dissociation Energy
Bronsted Lowry Base In Inorganic Chemistry
Carbon Nucleophiles
Chair Conformation Of Glucose
Characteristics Of Functional Groups
Chemical Bonding
Chemical Equilibrium
Chemical Kinetics
Chemical Reactions and Equations
Classes Of Functional Groups
Coding Strand of DNA
Conjugated Compounds in Organic Chemistry
Coordinate Covalent Bonds
Coordination Chemistry
Cycloheptatrienyl Cation
d-Block Elements
Dimer
Diol
Dipeptide
Diterpenoid
Drawing Resonance Forms
Electrochemistry
Environmental Chemistry
Epoxides
Exergonic Reaction
Formal Charges
Gas Laws
Gaseous State
Globular Protein
Glucogenesis
Glycerophospholipid
Glycolipid In Organic Chemistry
Heat Of Hydrogenation
Heterolytic Bond Breaking
Hydride Shift
Hydrolysis Grignard Reactions and Reduction
Ionic Equilibrium
IR Spectroscopy
IR Spectrum Of Anisole
IR Spectrum Of Cyclohexanone
IUPAC Nomenclature
Kinetic-Theory of Gases
L Sugar
Lock And Key Model
Mass Spectrometry
Matter and Measurement
Mechanism Of Mutarotation
Metals and Non-metals
Mole Concept
Mutarotation
Neutral Amino Acids
NMR Spectroscopy
Nuclear Chemistry
Nucleotide
Organometallic Compounds
Oxygen Nucleophiles
P-Block Elements
Periodic Classification of Elements
Photoelectron Spectroscopy
Polar Aprotic Solvent
Polarity Of Water
Polarizability In Organic Chemistry
Polymers
Qualitative Analysis
Quantum Chemistry
Reactions of Ethers
Redox Reactions
Reducing Sugar
S-Block Elements
Saponification
Shape of the D Orbital
Smokestack Scrubbers
Solids
Solutions
Stability of Vinyl Carbocation
Starch
States of Matter
Stereochemistry and Isomerism
Stoichiometry
Straight Chain Hydrocarbons
Structure Of Camphor
Structure of Cytosine
Structure Of Maltose
Structure Of Sorbitol
Structure of Sucrose
Sulfur Functional Groups
Tertiary Structure of Protein
Thermochemistry
Tosylate
Types of Chemical Bonds
Unsaturated Hydrocarbon
Using Molecular Structure To Predict Equilibrium
UV Visible Spectroscopy
Valence Bond Theory Vbt
Vinyl Group
Vinylic Carbocation
Williamson Ether Synthesis
Writing and Balancing Nuclear Equations
Zaitsev's Rule in Organic Chemistry