SciShow
Most Metabolism Boosters Are BS
Despite some bold claims, most supplements can’t really "boost" your metabolism, and the actual changes we can make to it are pretty limited.
SciShow
What Did Dinosaurs Taste Like?
Have you ever wondered what dinosaur meat might have tasted like? Chances are you've eaten dinosaur more recently than you might expect.
Bozeman Science
Cooperative Interactions
Paul Andersen emphasizes the importance of cooperation in living systems. He starts with a brief description of game theory and why countries at peace do better over the long term. He then explains how microscopic cells cooperate in the...
Crash Course
Metabolism & Nutrition, part 2: Crash Course A&P
If you're like us, you love the sound of a brunch buffet. But not everything you eat at that glorious buffet is going to be turned into energy. Your body has to work with different forms of food in different ways. In this episode of...
SciShow
How "Cold-Blooded" Animals Survive the Cold
We humans can rely on our internal body heat to help keep us warm. But what can cold-blooded animals do when faced with the threat of freezing? Here are three creatures that have come up with some...“cool” solutions.
SciShow
What Did Dinosaurs Taste Like?
Have you ever wondered what dinosaur meat might have tasted like? Chances are you've eaten dinosaur more recently than you might expect.
TED-Ed
TED-Ed: Is it possible to lose weight fast? | Hei Man Chan
In the wealthiest circles of Victorian England, dieters would swallow an unhatched tapeworm and let it grow inside them by consuming undigested meals. And while modern fad diets aren't usually this extreme, they do promise similar...
Bozeman Science
Unit 4 Review - Homeostasis
Paul Andersen reviews the major concepts within the fourth unit of the new AP Biology framework. He begins by differentiating between negative and positive feedback loops. He explains how a stable internal environment is maintained...
MinuteEarth
Why Don't Sled Dogs Ever Get Tired?
Sled dogs are the best endurance athletes in the world thanks to a weird quirk in their metabolism. ___________________________________________ To learn more about this topic, start your googling with these keywords: Glycolysis: The...
Crash Course
Biological Molecules - You Are What You Eat: Crash Course Biology
Hank talks about the molecules that make up every living thing - carbohydrates, lipids, and proteins - and how we find them in our environment and in the food that we eat.
Bozeman Science
Signal Transmission and Gene Expression
Paul Andersen explains how signal transmission is used to alter both cellular function and gene expression. He uses the example of epinephrine release in humans and how it is used in the fight or flight response. Epinephrine causes liver...
Bozeman Science
Signal Transduction Pathways
Paul Andersen explains how signal transduction pathways are used by cells to convert chemical messages to cellular action. Epinephrine is used as a sample messenger to trigger the release of glucose from cells in the liver. The...
Bozeman Science
Fight or Flight Response
Paul Andersen explains how epinephrine is responsible for changes in chemistry of our body associated with the fight or flight response. Epinephrine released by the adrenal medulla are received by a number of organs associated with the...
SciShow
The Deal with Carbs
Carbs are pinned to be the villains in many diets, but those poor guys are just misunderstood.
Bozeman Science
Lipids
In this video Paul Andersen describes the lipids (of the fats). He explains how they are an important source of energy but are also required to cell membranes. He explains how the hydrocarbon tails in triglycerides contain energy...
SciShow
3 Misconceptions About Juice Cleanses
Juice cleanses or fasts are thought of as a popular way to detox and reboot the digestive system. But, like most fad diets, juice cleanses might not be doing what you think they are.
Bozeman Science
Carbohydrates
Paul Andersen begins by explaining the structure and purpose of carbohydrates. He describes and gives examples of monosaccharides, disaccharides, oligosaccharide and polysaccharides. He explains how they grow through dehydration...
Be Smart
Science of Marathon Running
So maybe we can't outrun cheetahs or antelope, but humans are uniquely adapted for long distance running. What does science have to say about marathon running? To find out, (and because I was feeling a little crazy) I decided to run one!...
Curated Video
Polysaccharides: the large carbohydrates you want to meet
Polysaccharides are large carbohydrates that have different structures and functions in humans and other living organisms. Starch, cellulose and glycogen are the 3 main types of polysaccharides we usually talk about when we learn about...
Curated Video
What are carbon-based molecules
Carbon-based molecules are the basis of life as we know it. Molecules like lipids, proteins, nucleic acids, and carbohydrates that make up all living things have one thing in common - carbon.
Curated Video
How do you store sugar in your body
Glucose storage in the human body happens in different ways. After eating a delicious slice of cake, our bodies need to process all the sugar we've ingested. Some is used for energy, and the excess is stored.
Healthcare Triage
Can a Low Sugar Diet "Starve Cancer?"
Cancer is scary. And fear can lead us to try and find hope in some pretty dubious treatment suggestions. There's a myth circulating in internet health circles that eating a low-sugar diet can somehow starve the cancer and shrink tumors....
Institute of Human Anatomy
Exercise & Sugar: When Sugar Can Be a Good Thing
In this video, Jonathan from the Institute of Human Anatomy explores the dynamics of sugar in the body, covering topics like monosaccharides, disaccharides, glucose, insulin, and the effects of exercise on sugar regulation. Discover how...
Science ABC
If We Go To Sleep Hungry, Why Do We Wake Up Feeling Less Hungry?
When you wake up, you generally feel less hungry because the liver has maintained the blood glucose levels in your blood during your nap. Furthermore, there’s practically no physical activity during sleep, so your energy expenditure is...