Skip to main content
General Biology
My Courses
College Courses
Professional Courses
My Courses
Chemistry
General Chemistry
Organic Chemistry
Analytical Chemistry
GOB Chemistry
Biochemistry
Intro to Chemistry
Biology
General Biology
Microbiology
Anatomy & Physiology
Genetics
Cell Biology
Math
College Algebra
Trigonometry
Precalculus
Calculus
New!
Business Calculus
New!
Statistics
New!
Business Statistics
Physics
Physics
Business
Microeconomics
Macroeconomics
Financial Accounting
Social Sciences
Psychology
New!
Programming
Introduction to Python
Microsoft Power BI
Data Analysis - Excel
Introduction to Blockchain
HTML, CSS & Layout
Introduction to JavaScript
R Programming
Product & Marketing
Agile & Product Management
Digital Marketing
Project Management
AI in Marketing
AI Tools
Channels Home
My Course
Learn
Exam Prep
AI Tutor
Textbook Solutions
Flashcards
Explore
Bookmarks
My Course
Learn
Exam Prep
AI Tutor
Textbook Solutions
Flashcards
Explore
Bookmarks
?
Select textbook and university
Improve your experience by picking them
Table of contents
Skip topic navigation
1. Introduction to Biology
2h 40m
Worksheet
Introduction to Biology
8m
Characteristics of Life
12m
Life's Organizational Hierarchy
27m
Natural Selection and Evolution
26m
Introduction to Taxonomy
26m
Scientific Method
27m
Experimental Design
30m
2. Chemistry
3h 40m
Worksheet
Atoms- Smallest Unit of Matter
57m
Isotopes
39m
Introduction to Chemical Bonding
21m
Covalent Bonds
40m
Noncovalent Bonds
5m
Ionic Bonding
37m
Hydrogen Bonding
19m
3. Water
1h 26m
Worksheet
Introduction to Water
7m
Properties of Water- Cohesion and Adhesion
7m
Properties of Water- Density
8m
Properties of Water- Thermal
14m
Properties of Water- The Universal Solvent
17m
Acids and Bases
12m
pH Scale
18m
4. Biomolecules
2h 23m
Worksheet
Carbon
8m
Functional Groups
9m
Introduction to Biomolecules
2m
Monomers & Polymers
11m
Carbohydrates
23m
Proteins
25m
Nucleic Acids
34m
Lipids
28m
5. Cell Components
2h 26m
Worksheet
Microscopes
10m
Prokaryotic & Eukaryotic Cells
26m
Introduction to Eukaryotic Organelles
16m
Endomembrane System: Protein Secretion
29m
Endomembrane System: Digestive Organelles
12m
Mitochondria & Chloroplasts
21m
Endosymbiotic Theory
10m
Introduction to the Cytoskeleton
10m
Cell Junctions
8m
6. The Membrane
2h 31m
Worksheet
Biological Membranes
10m
Types of Membrane Proteins
7m
Concentration Gradients and Diffusion
9m
Introduction to Membrane Transport
14m
Passive vs. Active Transport
13m
Osmosis
33m
Simple and Facilitated Diffusion
17m
Active Transport
30m
Endocytosis and Exocytosis
15m
7. Energy and Metabolism
2h 0m
Worksheet
Introduction to Energy
15m
Laws of Thermodynamics
15m
Chemical Reactions
9m
ATP
20m
Enzymes
14m
Enzyme Activation Energy
9m
Enzyme Binding Factors
9m
Enzyme Inhibition
10m
Introduction to Metabolism
8m
Negative & Positive Feedback
7m
8. Respiration
2h 40m
Worksheet
Redox Reactions
15m
Introduction to Cellular Respiration
22m
Types of Phosphorylation
12m
Glycolysis
19m
Pyruvate Oxidation
8m
Krebs Cycle
16m
Electron Transport Chain
14m
Chemiosmosis
7m
Review of Aerobic Cellular Respiration
19m
Fermentation & Anaerobic Respiration
23m
9. Photosynthesis
2h 49m
Worksheet
Introduction to Photosynthesis
17m
Leaf & Chloroplast Anatomy
10m
Electromagnetic Spectrum
6m
Pigments of Photosynthesis
16m
Stages of Photosynthesis
6m
Light Reactions of Photosynthesis
34m
Calvin Cycle
21m
Photorespiration
17m
C3, C4 & CAM Plants
20m
Review of Photosynthesis
18m
10. Cell Signaling
59m
Worksheet
Introduction to Cell Signaling
16m
Classes of Signaling Receptors
13m
Types of Cell Signaling
15m
Signal Amplification
13m
11. Cell Division
2h 47m
Worksheet
Introduction to Cell Division
22m
Organization of DNA in the Cell
17m
Introduction to the Cell Cycle
7m
Interphase
18m
Phases of Mitosis
48m
Cytokinesis
16m
Cell Cycle Regulation
15m
Review of the Cell Cycle
7m
Cancer
13m
12. Meiosis
2h 0m
Worksheet
Genes & Alleles
15m
Homologous Chromosomes
12m
Life Cycle of Sexual Reproducers
5m
Introduction to Meiosis
15m
Meiosis I
12m
Meiosis II
11m
Genetic Variation During Meiosis
37m
Mitosis & Meiosis Review
9m
13. Mendelian Genetics
4h 44m
Worksheet
Introduction to Mendel's Experiments
7m
Genotype vs. Phenotype
17m
Punnett Squares
13m
Mendel's Experiments
26m
Mendel's Laws
18m
Monohybrid Crosses
19m
Test Crosses
14m
Dihybrid Crosses
20m
Punnett Square Probability
26m
Incomplete Dominance vs. Codominance
20m
Epistasis
7m
Non-Mendelian Genetics
12m
Pedigrees
6m
Autosomal Inheritance
21m
Sex-Linked Inheritance
43m
X-Inactivation
9m
14. DNA Synthesis
2h 27m
Worksheet
The Griffith Experiment
12m
The Hershey-Chase Experiment
13m
Chargaff's Rules
9m
Discovering the Structure of DNA
18m
Meselson-Stahl Experiment
12m
Introduction to DNA Replication
22m
DNA Polymerases
9m
Leading & Lagging DNA Strands
14m
Steps of DNA Replication
15m
DNA Repair
7m
Telomeres
11m
15. Gene Expression
3h 20m
Worksheet
Central Dogma
7m
Introduction to Transcription
20m
Steps of Transcription
22m
Eukaryotic RNA Processing and Splicing
20m
Introduction to Types of RNA
9m
Genetic Code
23m
Introduction to Translation
30m
Steps of Translation
23m
Post-Translational Modification
6m
Review of Transcription vs. Translation
12m
Mutations
21m
16. Regulation of Expression
3h 31m
Worksheet
Introduction to Regulation of Gene Expression
13m
Prokaryotic Gene Regulation via Operons
27m
The Lac Operon
21m
Glucose's Impact on Lac Operon
25m
The Trp Operon
20m
Review of the Lac Operon & Trp Operon
11m
Introduction to Eukaryotic Gene Regulation
9m
Eukaryotic Chromatin Modifications
16m
Eukaryotic Transcriptional Control
22m
Eukaryotic Post-Transcriptional Regulation
28m
Eukaryotic Post-Translational Regulation
13m
17. Viruses
37m
Worksheet
Viruses
37m
18. Biotechnology
2h 58m
Worksheet
Introduction to DNA-Based Technology
5m
Introduction to DNA Cloning
10m
Steps to DNA Cloning
35m
Introduction to Polymerase Chain Reaction
13m
The Steps of PCR
23m
Gel Electrophoresis
17m
Southern Blotting
21m
DNA Fingerprinting
13m
Introduction to DNA Sequencing
7m
Dideoxy Sequencing
30m
19. Genomics
17m
Worksheet
Genomes
17m
20. Development
1h 5m
Worksheet
Developmental Biology
31m
Animal Development
20m
Plant Development
13m
21. Evolution
3h 1m
Worksheet
Introduction to Evolution and Natural Selection
50m
History of Evolutionary Thought
29m
Natural Selection
26m
Evidence of Natural Selection
22m
Evidence of Evolution
36m
Misconceptions About Evolution
15m
22. Evolution of Populations
3h 52m
Worksheet
Evolution of Populations
11m
Genetic Variation
24m
Genetics and Allele Frequencies
23m
The Hardy-Weinberg Principle
1h 4m
Assumptions of the Hardy-Weinberg Principle
12m
Non-Random Mating
10m
Natural Selection
39m
Genetic Drift
19m
Gene Flow
10m
Putting it All Together
16m
23. Speciation
1h 37m
Worksheet
Introduction to Speciation
3m
The Biological Species Concept
32m
Other Species Concepts
15m
Allopatric and Sympatric Speciation
32m
Hybrid Zones
9m
Speciation Time Scales
4m
24. History of Life on Earth
2h 6m
Worksheet
Origin of Life
13m
The Fossil Record
24m
History of Life on Earth
14m
Extinctions
31m
Adaptive Radiation
34m
Evolution of Complexity
9m
25. Phylogeny
2h 31m
Worksheet
Introduction to Phylogeny
15m
Phylogeny
54m
Building Phylogenetic Trees
49m
Cladistics
16m
Phylogenetics and Genome Evolution
16m
26. Prokaryotes
4h 59m
Worksheet
Introduction to Prokaryotes
31m
Prokaryotic Cell Structure
48m
Prokaryotic Motility
12m
Prokaryotic Reproduction
1h 21m
Prokaryotic Metabolism
52m
Prokaryotic Diversity
36m
Prokaryotes in the Environment
36m
27. Protists
1h 12m
Worksheet
Introduction to Protists
13m
Evolution of Protists
9m
Protist Life Cycles
37m
Eukaryotic Supergroups: Exploring Protist Diversity
12m
28. Plants
1h 22m
Worksheet
Land Plants
35m
Nonvascular Plants
13m
Seedless Vascular Plants
6m
Seed Plants
26m
29. Fungi
36m
Worksheet
Fungi
19m
Fungi Reproduction
17m
30. Overview of Animals
34m
Worksheet
Overview of Animals
34m
31. Invertebrates
1h 2m
Worksheet
Porifera and Cnideria
10m
Lophotrochozoans
24m
Ecdysozoans
24m
Echinoderms
3m
32. Vertebrates
50m
Worksheet
Chordates
28m
Aminotes
9m
Primates and Homonids
12m
33. Plant Anatomy
1h 3m
Worksheet
Roots and Shoots
26m
Tissues
16m
Growth
20m
34. Vascular Plant Transport
2m
Worksheet
Water Potential
2m
35. Soil
37m
Worksheet
Soil and Nutrients
20m
Nitrogen Fixation
16m
36. Plant Reproduction
47m
Worksheet
Flowers
33m
Seeds
14m
37. Plant Sensation and Response
1h 9m
Worksheet
Phototropism
36m
Tropisms and Hormones
19m
Plant Defenses
14m
38. Animal Form and Function
1h 19m
Worksheet
Animal Tissues
27m
Metabolism and Homeostasis
35m
Thermoregulation
16m
39. Digestive System
10m
Worksheet
Digestion
3m
Blood Sugar Homeostasis
7m
40. Circulatory System
1h 57m
Worksheet
Circulatory and Respiratory Anatomy
40m
Heart Physiology
42m
Gas Exchange
33m
41. Immune System
1h 12m
Worksheet
Immune System
9m
Innate Immunity
15m
Adaptive Immunity
47m
42. Osmoregulation and Excretion
50m
Worksheet
Osmoregulation and Excretion
50m
43. Endocrine System
4m
Worksheet
Endocrine System
4m
44. Animal Reproduction
2m
Worksheet
Animal Reproduction
2m
45. Nervous System
55m
Worksheet
Neurons and Action Potentials
8m
Central and Peripheral Nervous System
46m
46. Sensory Systems
46m
Worksheet
Sensory System
46m
47. Muscle Systems
23m
Worksheet
Musculoskeletal System
23m
48. Ecology
3h 11m
Worksheet
Introduction to Ecology
20m
Biogeography
14m
Earth's Climate Patterns
50m
Introduction to Terrestrial Biomes
10m
Terrestrial Biomes: Near Equator
13m
Terrestrial Biomes: Temperate Regions
10m
Terrestrial Biomes: Northern Regions
15m
Introduction to Aquatic Biomes
27m
Freshwater Aquatic Biomes
14m
Marine Aquatic Biomes
13m
49. Animal Behavior
28m
Worksheet
Animal Behavior
28m
50. Population Ecology
3h 41m
Worksheet
Introduction to Population Ecology
28m
Population Sampling Methods
23m
Life History
12m
Population Demography
17m
Factors Limiting Population Growth
14m
Introduction to Population Growth Models
22m
Linear Population Growth
6m
Exponential Population Growth
29m
Logistic Population Growth
32m
r/K Selection
10m
The Human Population
22m
51. Community Ecology
2h 46m
Worksheet
Introduction to Community Ecology
2m
Introduction to Community Interactions
9m
Community Interactions: Competition (-/-)
38m
Community Interactions: Exploitation (+/-)
23m
Community Interactions: Mutualism (+/+) & Commensalism (+/0)
9m
Community Structure
35m
Community Dynamics
26m
Geographic Impact on Communities
21m
52. Ecosystems
2h 36m
Worksheet
Introduction to Ecosystems
24m
Energy Flow Through Ecosystems
39m
Making Sense of Ecosystem Production & Efficiency
19m
Energy & Biomass Pyramids
16m
Factors Impacting Primary Production
12m
Biogeochemical Cycles
44m
53. Conservation Biology
24m
Worksheet
Conservation Biology
24m
40. Circulatory System
Heart Physiology
General Biology
40. Circulatory System
Heart Physiology
Previous video
Next video
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!
Watch the first video
Video duration:
1m
Play a video:
Previous video
Next video
Related Videos
Related Practice
Guided course
05:13
Heart Physiology
Jason Amores Sumpter
1780
views
7
rank
Guided course
07:36
Electrical Signals of the Heart
Jason Amores Sumpter
1526
views
7
rank
Guided course
05:37
Cardiac Cycle
Jason Amores Sumpter
1639
views
5
rank
Guided course
16:12
Blood Pressure
Jason Amores Sumpter
1204
views
11
rank
Guided course
07:53
Cardiovascular Disease
Jason Amores Sumpter
1133
views
03:08
Atherosclerosis, Causes, Signs and Symptoms, Diagnosis and Treatment.
668
views
06:06
Pathogenesis of Atherosclerosis
891
views
07:58
Role of oxidative stress in atherosclerosis
1003
views
06:25
Atherosclerosis
710
views
02:38
What is Coronary Artery Disease - Mechanism of Disease
1139
views
06:10
Cardiovascular | Fundamentals of Blood Pressure
892
views
06:52
Blood Pressure Regulation (Lecture)
812
views
06:00
Hypertension | Blood Pressure Regulation | Hypotension | Dr Najeeb Lectures
1318
views
04:32
How blood pressure works - Wilfred Manzano
1140
views
04:35
Cardiac cycle 4- Early ventricular systole
802
views
04:35
Cardiac cycle 3- Atrial systole
875
views
03:37
Cardiac cycle 2- Atrial ventricular diastole
726
views
03:17
Cardiac cycle 1- Introduction
1320
views
07:10
Cardiac Cycle | Cardiovascular Physiology
1091
views
05:55
BTEC nervous control of the cardiac cycle
1630
views
04:30
Cardiac cycle, stages, physiology, Diastole and systole in the cardiac cycle.
1614
views
06:11
Electrical Conduction in the Heart
648
views
1
rank
04:42
The Cardiac Cycle | A-Level Biology
1266
views
06:24
Cardiac Cycle and Conduction System of Heart [Physiology Animation]
1085
views
04:28
How the heart actually pumps blood - Edmond Hui
630
views
02:49
Electrical activity in the Heart
1189
views
23:59
Cardiovascular | Cardiac Cycle
707
views
06:09
"Basic Cardiac Anatomy and Physiology" by Nancy Braudis for OPENPediatrics
921
views
07:50
Cardiac Action Potential, Animation.
1275
views
04:11
The Cardiac Cycle, Animation
2145
views
10:50
Cardiology - Heart Physiology I (Cardiac Myocyte and Membrane Potential)
783
views
Load more videos
05:13
![Cardiac Cycle and Conduction System of Heart [Physiology Animation]](https://img.youtube.com/vi/x432O7VhfNU/mqdefault.jpg)
