Curated Video
The Classification of Organisms: Traditional and Modern Approaches
This video discusses the traditional and modern methods of classifying organisms based on their similarities. The video explains that the classification of organisms is essential to understand the relationships between different groups...
msvgo
Elements and Its Classification
It explains the characteristics of an element and talks about elements such as metals, non-metals, metalloids and noble gases.
Professor Dave Explains
The Structure and Physiology of the Human Brain
Let's do a quick review of the human brain, introduce a couple new things, and be right on our way learning about brain function and behavior!
Professor Dave Explains
Types of Plant Tissues
We just learned about plant cells, so now it's time to learn about how these different types of cells come together to form all the different tissues in the plant. There is ground tissue, dermal tissue, and vascular tissue. What do they...
Professor Dave Explains
Visual Processing and the Visual Cortex
We learned about the structure of the eye in the Anatomy and Physiology series. But how do we process visual information? Light hits the retina at the back of the eye, and then what happens? Well quite a lot, to be honest! We have to go...
Professor Dave Explains
Mechanisms of Natural Selection Types of Sexual Selection
We touched upon sexual selection when we learned about natural selection. Essentially when there is a variance in the reproductive success of a particular sex for a given species, secondary sex characteristics will develop in that...
Professor Dave Explains
Alteration of Chromosome Number and Structure
We've already learned about certain kinds of modification to the genome, namely in the way of mutations that can occur to specific base pairs, or frameshift mutations when base pairs are deleted or inserted. But there can also be...
Professor Dave Explains
Drug Addiction and the Brain
We are able to become physically dependent on a wide variety of substances, which results in what we call drug addiction. What does this look like from a neurophysiological standpoint? What does the drug-addicted brain look like? Let's...
Professor Dave Explains
The Psychology of Emotion and Stress
Humans, just like most other mammals, display a wide variety of emotional states. But what are emotions? Why do we have them? What purpose do they serve in an evolutionary context? Let's get to the bottom of emotions right now!
Professor Dave Explains
Beyond Mendelian Genetics Complex Patterns of Inheritance
We've already learned about Mendelian genetics, which taught us about dominant and recessive alleles and the laws that govern their inheritance. But things are not always so simple. There are situations that go beyond this basic...
Professor Dave Explains
Inheritance of X-Linked Genes
We all know that DNA is the molecule of heredity, but we didn't always know that. It had to be demonstrated empirically. As it happens, some of the first evidence put forth had to do with genes found on the X-chromosome of fruit flies,...
Professor Dave Explains
Brain Damage and Neuroplasticity
At this point, we understand how important the brain is. So naturally, when the brain is damaged in some way, it is usually disastrous for the individual. What are the different types of brain damage? How does the brain respond? We will...
Professor Dave Explains
Introduction to Immunology
As we know from our understanding of microbiology, pathogens are everywhere. So why don't we get sick all the time? And what are allergies, why do some people have them and others don't? And what are vaccines, how do those work? All of...
Professor Dave Explains
Introduction to Mycology
Mushrooms are some of the most fascinating organisms on the planet. But what are they exactly? Are they plants? No! In fact, they are extremely different from plants. They belong in their own kingdom, called the Fungi kingdom. What else...
Professor Dave Explains
Types of Immune Cells Part 1: Immune Cell Function
Ok, we are ready to investigate the immune system! So where do we start? Rather than starting on the big objects, like the organs in the lymphatic system, the best way to dive in is to briefly discuss the different types of cells that...
Professor Dave Explains
Apoptosis Programmed Cell Death
We've touched on apoptosis before, especially when we learned about cancer in the biochemistry series. But let's a closer look. We know that apoptosis is programmed cell death, a failsafe mechanism whereby faulty cells that pose a threat...
Visual Learning Systems
Exploring the Basics of Classification
In this video, we explore the concept of classification and how it helps us understand the vast diversity of living things on Earth. The video also traces the history of classification from Aristotle's early attempts to modern-day...
FuseSchool
The 5 Kingdoms in Classification
The classification system organises species into domain, kingdom, phylum, class, order, family, genus and finally species. ‘Kingdom’ is the second highest rank below the rank of domain in this sequence of classification. It helps us to...
Professor Dave Explains
Plant Pigments
Why are most plants green? Why do leaves change colors in the autumn? Let's learn about pigments, the molecules that give living organisms their color. They also have other interesting functions, like the famous chlorophyll, which serves...
Professor Dave Explains
Overview of Plant Classification: Vascular and Nonvascular Plants
Now that we have covered most of the basics regarding plant structure and function, it's time to start digging into all the different types of plants, how they are classified, and their evolutionary history. It's even more fascinating...
FuseSchool
How Are Organisms Classified?
In terms of biological classification, organisms are classified, or grouped, with other organisms that they are most closely related to. These small groups are then classified together into larger groups and so on, until we reach the top...
Professor Dave Explains
Plant Responses to the Environment: Tropisms and Defenses
We've already learned a little bit about plant hormones, but let's dig a little deeper so that we can really examine the different ways that plants can respond to stimuli. These are called tropisms, and they can be positive or negative,...