What Is the Point of Sex

This video discusses genetic variants. The video explains how DNA codes for proteins and how variations in the DNA sequence can lead to alterations in the amino acids and shape of the protein produced, which can lead to changes in the...

This video explains the concept of pheromones, chemical signals used by animals to communicate with each other. It discusses the different types of pheromones, such as sex pheromones used for reproductive purposes, alarm pheromones that...

Everybody poops, but how does one poop when one does not have a butthole?

Death is inevitable and mysterious, even in the microcosmos. Stentors, heliozoans, and yes, even tardigrades, experience death in many different ways.

The family Spathidiidae is made up of around 20 genera, which encompass around 250 known species. And there’s a lot of variety in the Spathidiid family to sort through.

To study organisms at the genetic level, we need their DNA. Which means that we need to be able to wade through all the bits and pieces lying within their tiny bodies to pick out something even tinier—something we can’t just dig out with...

This live-action video program is about the word biosphere. The program is designed to reinforce and support a student's comprehension and retention of the word biosphere through use of video footage, photographs, diagrams and colorful,...

You’ve heard those worm horror stories, right? Stories of painful stomach cramps or diarrhea or nausea that eventually turns out to be caused by some worms that have taken up residence in someone’s intestines. It’s so terrifying and wild...

Rotifers exist in a wide range of shapes, from globular, sac-like floaters to elongated worm-like swimmers and creepers to sessile types. In this video we'll focus on the four major clades of this phylum - though there is debate around...

Watching this Peranema feels a bit like watching a cat waffling back and forth between whether or not it wants to take a nap. Sometimes the Peranema stretches, its body undulating into an elongated, indescribable geometry as its flagella...

Imagine if it took a couple of months for the oxygen we breathed to reach our cells. Well, if we relied on diffusion alone for oxygen to get to the tips of our toes, it would take about this long. By this time, our cells would have died....

This video explains the process of genetic engineering and discusses some of its applications in crop production and medicine. The process involves modifying the genome of an organism to introduce desirable characteristics, such as...

The ciliates we’re going to talk about today are kind of…frustrating. At this point in our journey, we’ve gotten used to the fact that the microcosmos is an indecipherable mess at times, filled with organisms that look like each other,...

Our oceans and lakes are filled with copepods, a myriad of small crustacean species that might float as plankton or infect other creatures1. And as they’re living in whatever manner best suits them, some copepods—like our friend...

In this video, Leslie answers a very simple question - What is a disease? But, he look at it from a Biological perspective - since this is Interactive Biology. It's the first in the Pathophysiology series. Enjoy!

Ever thought about how the world looks out of a parasite's perspective? This fun video takes you on that journey!

By now we've hopefully all seen Alien: Covenant. If you haven't, go see it right away! It's awesome, and this has spoilers. After you've seen it, you'll probably have a few questions, just as I did. The main thing that left me...

The theme of today's episode is pretty simple: things we never thought we’d be showing you, but here we are.

This section covers the relationship between organisms and their environment. It also covers the Levels of Organization and symbiotic relationships.

Microbes Don’t Actually Look Like Anything

For an activity that mostly involves sitting and staring, microscopy is a surprisingly high stakes task. On the other side of the lens are drops full of potential, a multitude of worlds to unravel and examine. But they’re also fragile...

In this section, I talk about the sun as a source of energy, consumers vs. producers and cycles found in nature

This lecture goes into an introduction to what biology is, what an organism is and the 5 characteristics of living things.