ClassHook | Biology

Home → Playlists → Biology

Biology

Official • 143 clips

This playlist provides clips that convey key concepts in Biology.

CrashCourse: In Da Club: Membranes and Transplant

00:15 - 04:58

4m 43s

plasma membrane

diffusion and osmosis

Hank explains diffusion and demonstrates the diffusion process by placing dyed salt water (in a sausage casing) in a glass of water. The casing represents the membrane, and over several hours, the salt water diffuses into the pure water. Diffusion ends when the salt content is the same inside and outside of the casing.

Key Words: Active Transport, Passive Transport, Diffusion, Osmosis, Solutions, Hypertonic, Hypotonic, Isotonic, Aquaporins

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 ...