Professor Dave Explains
Hunger Knowing When to Eat
Eating is one of the best parts of life, and our brains make sure to remind us to do it by producing the sensation called hunger. How does this work? Does the brain just know when we are running out of energy, and it reminds us to...
Professor Dave Explains
Gene Expression Analysis and DNA Microarray Assays
If we want to understand a biological organism, we turn to the expression of its genome. Which genes are being expressed, and in which cells, and when? How does this differ between a normal cell and a cancer cell? We have incredibly...
Professor Dave Explains
Types of Speciation Allopatric, Sympatric, Peripatric, and Parapatric
Earlier in the series we learned about evolution by natural selection, and the production of new species, which we call speciation. But did you know there are different types of speciation? There are! That's because there are different...
ShortCutsTv
Socially-Sensitive Research
While ethics is concerned with the conduct of research, the issue of socially sensitive research is concerned with the social consequences of research. Might it be unintentionally harmful to some individuals or groups? This film begins...
Wonderscape
Science Kids: Unraveling the Neanderthal Mystery
This video explores the history and characteristics of Neanderthals, our closest extinct human relatives. It discusses their relationship to modern humans, their physical traits, their way of life, and theories about their extinction....
Professor Dave Explains
Brain Lateralization The Split Brain
The brain consists of two hemispheres, the left brain and the right brain. There are many myths surrounding the specializations of each hemisphere, and the types of personalities that they produce, so let's put those to rest, while going...
Independent Producers
Sea Slug: Animal or Plant?
Small green sea slugs puzzle scientists because they can photosynthesize energy, just like plants. These Eastern Emerald Elysia sea slugs also appear to have several different types of DNA. Scientists are hopeful these sea slugs might...
Visual Learning Systems
Genetics in Action: Introduction
This video builds on the genetic work of Mendel and takes the student through additional genetic discoveries made in the twentieth century. The Law of Segregation and the Law of Independent Assortment are plainly illustrated. The notions...
Catalyst University
Genetics | Dihybrid Cross (Example 2)
A second example of a dihybrid cross in which the paternal AaBb gamete is crossed with the maternal AaBb gamete (both parents are doubly heterozygotes for genes A & B)
Professor Dave Explains
The Sensorimotor System and Human Reflexes
We just learned all about how sensory information from the surroundings makes it to the brain, but once it's there, the brain has to then tell the body what to do to respond to its surroundings. This happens thanks to the sensorimotor...
Next Animation Studio
Genetic analysis suggests contact between Polynesians and South Americas before Columbus: study
Ancient Polynesians may have crossed the Pacific to make contact with Native Americans from the region that is now Colombia
Professor Dave Explains
Processing Auditory, Somatosensory, Olfactory, and Gustatory Information
We just looked at the process by which visual information makes its way from your eyes to your brain, and what happens when it gets there. So what about the other four senses? Those are pretty important too, so let's take a look!
Science Buddies
Investigate Alien Genetics
Did you know that you share half of your genes with each of your biological parents? This is why you look similar to them and your siblings. In this activity you will model how traits are passed on from one generation to the next – using...
Primer
Your Genes are Selfish
Genes are the true replicators, which can help explain a variety of counter-intuitive traits.
Professor Dave Explains
Information Storage and the Brain Learning and Memory
Everyone has memories. But how does that work in the brain? How does your brain store information for you to recall later? And how do we learn various skills, like playing an instrument, or riding a bike? As incredible as it may sound,...
Mazz Media
Autoimmune Diseases
In this live-action program viewers will learn that an autoimmune disease occurs when the immune system mistakenly attacks and destroys healthy body tissue. Students will come to understand that special cells called regulatory T cells...
NASA
NASA | DNA Building Blocks Can Be Made in Space
NASA-funded researchers have evidence that some building blocks of DNA, the molecule that carries the genetic instructions for life, found in meteorites were likely created in space. The research gives support to the theory that a "kit"...
Catalyst University
Genetics | Law of Segregation & Punnet Squares
A brief discussion on Mendel's law of segregation followed by an in-depth Punnet square (monohybrid cross) example.
Rock 'N Learn
Life Science: Intro
Here's an exciting way to learn important facts and get ready for a life science test!
Professor Dave Explains
Neuronal Pools and Neural Processing
Ok, so we now have a pretty solid understanding of neuronal structure, as well as the action potential and synapses, so we understand how information gets from one neuron to the next. But that's just the tip of the iceberg. How are...
FuseSchool
What Are Chromosomes
In the nucleus of each eukaryotic cell, the DNA is packaged together into chromosomes. Each chromosome is made up of DNA that is tightly coiled around proteins that give it the structure. Chromosomes usually occur in pairs, except for...
Mazz Media
Fragmentation: Asexual Reproduction in Plants
In this live-action program viewers will learn that a common form of asexual reproduction, without requiring gametes, flowers, seeds or fruits, is fragmentation. As the word implies, fragments of the parent organism split or break off.
...
Professor Dave Explains
The Brain and Language
The way that humans communicate is very complex. We have an innate ability to understand and formulate language. As one might imagine, the accompanying brain activity is also quite complex, involving several different regions with very...