ClassHook | Biology

Home → Playlists → Biology

Biology

Official • 143 clips

This playlist provides clips that convey key concepts in Biology.

Crash Course: Biology: Speciation: Of Ligers and Men

00:18 - 05:27

5m 9s

Hank explains what defines a species: the ability to create fertile offspring. He also explains the conditions that are required to create an entirely new species.

Key Words: Species, Hybrids, Evolution, Speciation, Reproductive Isolation, Post-zygotic, Pre-zygotic, Allopatric Speciation, Natural Selection

Clips

1

Crash Course: Biology: Eukaryotic Transportation and Building thumbnail

Crash Course: Biology: Eukaryotic Transportation and Building

Hank provides an overview of the function of the Endoplasmic Reticulum (ER), Ribosomes, Golgi App...

2

CrashCourse: Coolest Part of the Cell thumbnail

CrashCourse: Coolest Part of the Cell

Hank explains the function of mitochondria and what makes it so cool. He also explains how scient...

3

Crash Course: Biology: Membranes & Transport thumbnail

Crash Course: Biology: Membranes & Transport

Hank explains active and vesicular transport then covers how cells regulate their contents and pr...

4

CrashCourse: Eukaryotic Nucleus thumbnail

CrashCourse: Eukaryotic Nucleus

Hank explains the role of the nucleus in a eukaryotic cell. He backs up his explanation with comp...

5

Seinfeld: George vs. The Geriatric Bike Gang thumbnail

Seinfeld: George vs. The Geriatric Bike Gang

George pretends to be handicapped, and while riding his bike, he hits a senior man's bike. When c...

6

Crash Course: Biology: Animal Development thumbnail

Crash Course: Biology: Animal Development

Hank explains the way in which organisms grow and develop. He covers how to determine the complex...

9

The Simpsons: Marge Gets Stressed Out thumbnail

The Simpsons: Marge Gets Stressed Out

Marge is put under a lot of stress with all of her responsibilities, which include solving the pr...

10

The Ellen DeGeneres Show: Four-Year-Old Teaches Biology thumbnail

The Ellen DeGeneres Show: Four-Year-Old Teaches Biology

Four-year-old Brielle shares with us some facts about the human body. She covers facts about the ...

11

A Bug's Life: Beautiful Butterfly thumbnail

A Bug's Life: Beautiful Butterfly

Heimlich hatches from his chrysalis and turns into a "beautiful" butterfly. This clip illustrates...

12

Osmosis Jones: Big Bad Pickanosis thumbnail

Osmosis Jones: Big Bad Pickanosis

Thrax holds an evil meeting in which he highlights his successes as a viruses. He illustrates tha...

13

The Magic School Bus: Structure's The Thing thumbnail

The Magic School Bus: Structure's The Thing

Ralphie and the rest of the class attempt to learn about the structure of the body in order to bu...

14

The Magic School Bus: Ralphie's Cell Battle thumbnail

The Magic School Bus: Ralphie's Cell Battle

Ralphie's class enters his body to find out what is making him sick. His classmates find bacteria...

15

Schoolhouse Rock!: Them Not-So-Dry Bones thumbnail

Schoolhouse Rock!: Them Not-So-Dry Bones

This clip illustrates the skeletal system and describes its purpose: to protect the body and give...

16

Bill Nye, the Science Guy: Cold-Blooded Reptiles thumbnail

Bill Nye, the Science Guy: Cold-Blooded Reptiles

Bill Nye introduces reptiles and explains how they are able to live in different environments aro...

17

The Big Bang Theory: Sheldon Explains Homeostasis thumbnail

The Big Bang Theory: Sheldon Explains Homeostasis

Sheldon explains the concept of homeostasis to Penny and tries to convince Penny to stay in her r...

19

Caillou: Caillou Teaches Rosie About Bugs thumbnail

Caillou: Caillou Teaches Rosie About Bugs

Caillou introduces Rosie to ants and explains that they're harmless. He then shows Rosie a caterp...

20

Schoolhouse Rock!: Do the Circulation thumbnail

Schoolhouse Rock!: Do the Circulation

This catchy song introduces the viewer to the circulatory system and explains its basic function:...

21

The Ellen DeGeneres Show: Four-Year-Old Teaches Anatomy thumbnail

The Ellen DeGeneres Show: Four-Year-Old Teaches Anatomy

Four-year-old Brielle teaches Ellen and the audience about the skeletal system. She identifies se...

22

Bill Nye, the Science Guy: Joints thumbnail

Bill Nye, the Science Guy: Joints

Bill Nye describes the different types of joints in the body and illustrates how they contribute ...

23

Maggie Simpson in The Longest Daycare: Goodnight Cocoon thumbnail

Maggie Simpson in The Longest Daycare: Goodnight Cocoon

Maggie finds a caterpillar crawling on the floor and starts playing with it. She carries it away ...

24

A Bug's Life: You're Still a Seed thumbnail

A Bug's Life: You're Still a Seed

Dot believes that she should be able to fly since she's a Royal Ant. Flik illustrates biological ...

25

Rick and Morty: Welcome to Anatomy Park thumbnail

Rick and Morty: Welcome to Anatomy Park

Rick sends Morty to Anatomy Park so that he can find Doctor Bloom and help save Reuben's life fro...

26

Rick and Morty: Alveoli Forest thumbnail

Rick and Morty: Alveoli Forest

The group escapes from hepatitis B and enters Alveoli Forest, where they encounter the bronchial ...

27

Schoolhouse Rock!: The Body Machine thumbnail

Schoolhouse Rock!: The Body Machine

This clip explains the purpose of food: fuel for the body. It illustrates the digestive system an...

30

The Magic School Bus: The Missing Link: Muscles thumbnail

The Magic School Bus: The Missing Link: Muscles

Ralphie's robot will not move, and the class learns that it doesn't move because it lacks muscles...

31

The Magic School Bus: How a Plant Makes Food thumbnail

The Magic School Bus: How a Plant Makes Food

By observing the chloroplasts in a leaf, the students learn that plants produce their own food an...

32

The Magic School Bus: How Water Changes thumbnail

The Magic School Bus: How Water Changes

The class goes to Water Land and learns about how water changes when it is exposed to different a...

33

The Simpsons: Mr. Burns Political Advert thumbnail

The Simpsons: Mr. Burns Political Advert

Mr. Burns makes a political campaign to rally the support of his peers. While doing so, he introd...

34

The Simpsons: Bart Catches a Three-Eyed Fish thumbnail

The Simpsons: Bart Catches a Three-Eyed Fish

Dave Shutton, an investigative reporter, approaches Bart and Lisa as they're fishing and talks to...

35

Planet of the Apes: Human See, Human Do thumbnail

Planet of the Apes: Human See, Human Do

Bright Eyes keeps trying to form words and is very responsive to human stimuli. The apes possess ...

36

Rick and Morty: Small Intestine thumbnail

Rick and Morty: Small Intestine

The group takes a boat ride through the small intestine, where the workers are not only singing a...

37

The Theory of Everything: It's Called Motor Neuron Disease thumbnail

The Theory of Everything: It's Called Motor Neuron Disease

The doctor explains to Stephen Hawking that Motor Neuron Disease is affecting his ability to use ...

38

Sid the Science Kid: Plant Growth thumbnail

Sid the Science Kid: Plant Growth

Teacher Suzy explains to her students an experiment with plants to help them understand how plant...

39

Sid the Science Kid: Sid's Amazing Lungs thumbnail

Sid the Science Kid: Sid's Amazing Lungs

Teacher Suzy explains to her students how lungs work then investigates the different ways in whic...

40

Sid the Science Kid: Muscles Muscles Song thumbnail

Sid the Science Kid: Muscles Muscles Song

Teacher Suzy sings about muscles. The song mentions that muscles are everywhere throughout our bo...

41

Schoolhouse Rock!: Telegraph Line thumbnail

Schoolhouse Rock!: Telegraph Line

This clip introduces the nervous system and illustrates its different parts. It also explains the...

42

The Simpsons: Homer's Evolution thumbnail

The Simpsons: Homer's Evolution

Homer evolves from a single-celled organism into a modern-day human. A great depiction of evolution.

43

Crash Course: Biology: Eukaryopolis - Animal Cells thumbnail

Crash Course: Biology: Eukaryopolis - Animal Cells

Hank explains the inner workings of a eukaryotic cell and the role of several organelles. He comp...

44

CrashCourse: In Da Club: Membranes and Transplant thumbnail

CrashCourse: In Da Club: Membranes and Transplant

Hank explains diffusion and demonstrates the diffusion process by placing dyed salt water (in a s...

45

Crash Course: Biology: Heredity thumbnail

Crash Course: Biology: Heredity

Hank explains that heredity is the passing on of genetic traits from parents to offspring. He mak...

46

Crash Course: Biology: DNA Structure thumbnail

Crash Course: Biology: DNA Structure

Hank explains that DNA stores our genetic instructions and illustrates how DNA is structured. He ...

47

CrashCourse: Mitosis Splitting Up thumbnail

CrashCourse: Mitosis Splitting Up

Mitosis is a key function in your body that constantly remediates cuts, repairs cells and accomod...

48

CrashCourse: Meiosis: Where Sex Starts thumbnail

CrashCourse: Meiosis: Where Sex Starts

Hank introduces meiosis, a special type of cell division that is necessary for sexual reproductio...

49

CrashCourse: Evolutionary Development thumbnail

CrashCourse: Evolutionary Development

Hank explains that animals are more similar to us than we imagined. He compares the ways in which...

52

Crash Course: Biology: Phenotype thumbnail

Crash Course: Biology: Phenotype

Hank explains how one's genotype affects his/her phenotype then gives an example of male pattern ...

54

Crash Course: Biology: Photosynthesis thumbnail

Crash Course: Biology: Photosynthesis

Hank explains in-depth the series of reactions that take place for a plant to produce food for it...

55

Crash Course: Biology: The Calvin Cycle thumbnail

Crash Course: Biology: The Calvin Cycle

Hank explains the Calvin Cycle, the light-independent reactions that occur within a plant to turn...

56

Crash Course: Biology: Meiosis I: The Four Phases thumbnail

Crash Course: Biology: Meiosis I: The Four Phases

Hank explains the four phases of meiosis 1: prophase 1, metaphase 1, anaphase 1, and telophase 1....

57

Crash Course: Biology: Meiosis II thumbnail

Crash Course: Biology: Meiosis II

Hank explains that the process of meiosis 2 is exactly the same as mitosis, though the goal is di...

58

CrashCourse: Charles Darwin and Natural Selection thumbnail

CrashCourse: Charles Darwin and Natural Selection

Hank provides background information on the biologist who contributed to evolutionary history: Ch...

59

Crash Course: Biology: Speciation: Of Ligers and Men thumbnail

Crash Course: Biology: Speciation: Of Ligers and Men

Hank explains what defines a species: the ability to create fertile offspring. He also explains t...

60

Crash Course: Biology: Types of Selection thumbnail

Crash Course: Biology: Types of Selection

Hank lists the different types of natural selection and explains each of them. He accompanies eac...

61

Crash Course: Biology: Dominant and Recessive Genes thumbnail

Crash Course: Biology: Dominant and Recessive Genes

Hank explains how dominant and recessive traits work using an example of wet and dry ear wax.

62

Crash Course: Biology: Differences of RNA thumbnail

Crash Course: Biology: Differences of RNA

Hank points out the three major differences between DNA and RNA. He mentions that RNA plays a cru...

63

Crash Course: Biology: DNA Transcription thumbnail

Crash Course: Biology: DNA Transcription

Hank explains how DNA and three specialized versions of RNA synthesize proteins. He delves into t...

67

Crash Course: Biology: The Krebs Cycle thumbnail

Crash Course: Biology: The Krebs Cycle

Hank explains another stage of cellular respiration, The Krebs Cycle (also known as the Citric Ac...

68

CrashCourse: Electron Transport Chain thumbnail

CrashCourse: Electron Transport Chain

Hank explains the Electron Transport Chain stage of cellular respiration. He notes that this stag...

69

Crash Course: Biology: Plant Cells vs. Animal Cells thumbnail

Crash Course: Biology: Plant Cells vs. Animal Cells

Hank illustrates the differences between plant and animal cells. Both are eukaryotic cells, but t...

72

Inside Eddie Johnson: Sugar Shock thumbnail

Inside Eddie Johnson: Sugar Shock

Eddie Johnson has consumed a lot of sugar, and The Pancreas Supervisor explains how he handles th...

73

Inside Eddie Johnson: Sugar Rush thumbnail

Inside Eddie Johnson: Sugar Rush

Eddie Johnson is in study hall, and he is hungry. The Digestion Supervisor inside his stomach des...

77

The Wild Thornberrys: Animal Facts thumbnail

The Wild Thornberrys: Animal Facts

Eliza and Darwin go on several adventures to learn interesting facts about different creatures of...

78

Idiocracy: It's What Plants Crave thumbnail

Idiocracy: It's What Plants Crave

The most average man in the world is preserved. When he awakens, he is the smartest man in the wo...

79

Finding Nemo: Anglerfish Chase thumbnail

Finding Nemo: Anglerfish Chase

Dory drops the scubadiving goggles that she and Marlin found, and they swim to the abyss to find ...

80

Thomas Edison's Secret Lab: Zero Chemistry thumbnail

Thomas Edison's Secret Lab: Zero Chemistry

Von Bolt learns about the pheromones and tries to use them to get the attention of a new lady rob...

81

The Boys from Brazil: Cloning a Rabbit thumbnail

The Boys from Brazil: Cloning a Rabbit

Dr. Bruckner demonstrates cloning by injecting the blood cells of a black rabbit into a white rab...

82

Animated Hero Classics: Louis Pasteur thumbnail

Animated Hero Classics: Louis Pasteur

Louis Pasteur is remembered for his remarkable breakthroughs in the causes and preventions of dis...

85

Contagion: Modeling of a Virus thumbnail

Contagion: Modeling of a Virus

The team creates a model of the virus causing an epidemic to better understand how it behaves and...

86

Bill Nye, the Science Guy: Everything That Eats Is Connected thumbnail

Bill Nye, the Science Guy: Everything That Eats Is Connected

Bill Nye explains the food web and how every living thing, even a human, is connected in it. He i...

87

The Simpsons: The Defective Simpsons Gene thumbnail

The Simpsons: The Defective Simpsons Gene

Homer brings together relatives from the tri-state area in an attempt to prove to Lisa that there...

88

Beakman's World: Sneezing and Tears thumbnail

Beakman's World: Sneezing and Tears

Beakmans explains that onions make you cry because of the chemical that gets into your nose. He t...

89

Beakman's World: Vaccines and The Immune System thumbnail

Beakman's World: Vaccines and The Immune System

Beakman explains what a vaccine is by acting like Edward Jenner. He explains how Jenner created t...

92

Beakman's World: Cell Restaurant thumbnail

Beakman's World: Cell Restaurant

Beakman answers quick questions about blood, veins, and their functions. They demonstrate this by...

93

Science with Sophie: Adaptations thumbnail

Science with Sophie: Adaptations

Sophie discusses how plants and animals need to compete in order to survive and the role that ada...

94

Crash Course: Biology: Classification of Fats thumbnail

Crash Course: Biology: Classification of Fats

Hank explains the different types of fat (saturated, unsaturated, omega-3, trans) that exist and ...

95

Crash Course: Biology: You Are What You Eat: Biological Molecules thumbnail

Crash Course: Biology: You Are What You Eat: Biological Molecules

Hank explains that biological molecules are essential sources of energy. They are used for energy...

96

Beakman's World: How the Lungs Work thumbnail

Beakman's World: How the Lungs Work

Beakman explains why we breathe and then uses an anatomical model to show which parts of the lung...

98

Beakman's World: What is Urine? thumbnail

Beakman's World: What is Urine?

Beakman uses a model to explain how cells release waste and the kidneys need to filter it. He the...

100

Fizzy's Lunch Lab: Protein Power Up thumbnail

Fizzy's Lunch Lab: Protein Power Up

The Lunch Labbers can’t keep up with Corporal Cup’s exercise regimen. Their muscles are tired. Fi...

101

CrashCourse: Population Genetics thumbnail

CrashCourse: Population Genetics

Hank describes the five factors that explain changes in allele frequency, which are at the heart ...

102

National Geographic: Genetics Overview thumbnail

National Geographic: Genetics Overview

What is a genome, and how are traits passed from generation to generation? Learn how pea plants h...

103

Science with Sophie: Dog Diversity thumbnail

Science with Sophie: Dog Diversity

Sophie tackles the question of why there are so many different breeds of dogs. She briefly discus...

104

Beakman's World: Natural Selection thumbnail

Beakman's World: Natural Selection

Beakman explains that giraffes have long necks so they can eat leaves out of trees. He mentions t...

105

Bill Nye, the Science Guy: The Eyeball thumbnail

Bill Nye, the Science Guy: The Eyeball

Bill Nye explains some parts of the eye and explains how the eye works with the brain. Your eye c...

106

Bill Nye, the Science Guy: The Ear thumbnail

Bill Nye, the Science Guy: The Ear

Bill Nye explains the flow of vibrations through the ear. Humans perceive sound after vibrations ...

107

Hannah Montana: The Bone Dance thumbnail

Hannah Montana: The Bone Dance

Miley Stewart memorizes the names of the bones in the human body by putting them into a song. She...

108

The Big Bang Theory: Prefrontal Cortex thumbnail

The Big Bang Theory: Prefrontal Cortex

Amy briefly explains the roles of the prefrontal cortex, the limbic system, and the amygdala in t...

109

Beakman's World: How the Nose Works thumbnail

Beakman's World: How the Nose Works

He uses a cartoon clip to explain the anatomy of the nasal cavity and where mucus is produced. He...

110

Beakman's World: Why do Feet Smell? thumbnail

Beakman's World: Why do Feet Smell?

Beakman explains that shoes stink because of the bacteria on your feet. He uses a microscope to q...

111

Beakman's World: Explaining Pimples thumbnail

Beakman's World: Explaining Pimples

Beakman explains what pimples are by using an animated clip. He explains normal function of your ...

112

Beakman's World: Creating Music thumbnail

Beakman's World: Creating Music

Beakman explains what sound waves and vibration are and explains how these create music. He then ...

114

National Geographic: The Brain thumbnail

National Geographic: The Brain

The brain constitutes only about 2 percent of the human body, yet it is responsible for all of th...

115

National Geographic: The Heart thumbnail

National Geographic: The Heart

The human heart beats up to 3 billion times over an average lifespan. Learn about the anatomy of ...

116

National Geographic: How The Eye Makes Sense of The World thumbnail

National Geographic: How The Eye Makes Sense of The World

How does the eye work exactly? In the latest video from Decoder, learn some of the extraordinary ...

117

Crash Course: Anatomy & Physiology: All About Nutrients thumbnail

Crash Course: Anatomy & Physiology: All About Nutrients

Hank explains the different types of nutrients that our body needs: water, vitamins, minerals, ca...

118

Science with Sophie: Taste Buds thumbnail

Science with Sophie: Taste Buds

Sophie explains the purpose of taste buds and how they've helped humans survive. She also briefly...

119

Beakman's World: Earwax Explained thumbnail

Beakman's World: Earwax Explained

Beakman explains earwax and its purpose using a giant ear with wax in it and an animated clip. He...

121

Beakman's World: Beakman Explains Sweat thumbnail

Beakman's World: Beakman Explains Sweat

Beakman uses an animated clip to explain how perspiration keeps us cool in the same way that a ca...

122

Beakman's World: Nerve Responsibility thumbnail

Beakman's World: Nerve Responsibility

Beakman explains that nerves are responsible for our five senses. He uses an animated clip to exp...

123

Beakman's World: Optical Illusions thumbnail

Beakman's World: Optical Illusions

Beakman explains how vision works involving the brain and eyes. He then explains how this works t...

124

Beakman's World: Building up Gas thumbnail

Beakman's World: Building up Gas

Beakman explains flatulence and why our bodies build up gas that needs to be expelled. He explain...

125

Science with Sophie: Why Do We Cry? thumbnail

Science with Sophie: Why Do We Cry?

Sophie explains the purpose of tears and discusses the different types of tears that we produce. ...

126

Science with Sophie: The Role of Snot thumbnail

Science with Sophie: The Role of Snot

Sophie conducts an experiment in which she creates a snot-like substance. She then explains the p...

127

Science with Sophie: What Are Scabs? thumbnail

Science with Sophie: What Are Scabs?

Sophie explains how scabs form and how wounds are healed. She uses an analogy involving beavers b...

128

Science with Sophie: All About Fear thumbnail

Science with Sophie: All About Fear

Sophie discusses fear and explains its purpose: to keep us alive. She illustrates what happens to...

130

Creation: You've Killed God, Sir thumbnail

Creation: You've Killed God, Sir

Charles Darwin struggles with the meaning of his research, and Thomas Huxley tells him that his t...

131

60 Minutes: Visualizing Antibiotic Resistance thumbnail

60 Minutes: Visualizing Antibiotic Resistance

To illustrate why excessive use of antibiotics is a problem, a scientist performs an experiment. ...

132

National Geographic: The Neanderthals thumbnail

National Geographic: The Neanderthals

This clip explains the known history of the Neanderthals, who were the closest relatives to the m...

134

The Lion King: The Circle Of Life thumbnail

The Lion King: The Circle Of Life

All the animals in the animal kingdom rush to see the new prince of the animal kingdom, a lion cu...

135

Schoolhouse Rock!: Save the Ocean thumbnail

Schoolhouse Rock!: Save the Ocean

This clip promotes the protection and preservation of marine ecosystems. It explains how global w...

136

The Magic School Bus: It's What Earth Day Is All About thumbnail

The Magic School Bus: It's What Earth Day Is All About

Tim mentions to Inspector 47 that all of the plants, animals, bugs, and insects in the rainforest...

137

Breakthrough (2015): Restoring Ecosystems thumbnail

Breakthrough (2015): Restoring Ecosystems

Sandra Postel works tirelessly to help the Colorado River once again fulfill its destiny of reach...

138

National Geographic: Light Pollution thumbnail

National Geographic: Light Pollution

Ever since the light bulb's invention 150 years ago, artificial light has illuminated homes, stre...

139

National Geographic: What are Rainforests? thumbnail

National Geographic: What are Rainforests?

This clip provides an overview of rainforests. It describes their age, unique characteristics, im...

140

A Plastic Ocean: Plastic Ocean thumbnail

A Plastic Ocean: Plastic Ocean

This clip describes the disastrous impact that our use of plastic has on the environment. It desc...

141

CrashCourse: That's Why Carbon is a Tramp thumbnail

CrashCourse: That's Why Carbon is a Tramp

Hank explains the properties of Carbon and its flexible bonding criteria, which allows it to bond...

143

The Grim Adventures of Billy & Mandy: Fish Out of Water thumbnail

The Grim Adventures of Billy & Mandy: Fish Out of Water

Billy's tiny, unhealthy, pet fish is made giant-sized by Grim as Billy was sleeping. Too big for ...