Crash Course
In Da Club - Membranes & Transport: Crash Course Biology
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.
Bozeman Science
Cladograms
Paul Andersen shows you how to construct a cladogram from a group of organisms using shared characteristics. He also discusses the process of parsimony in cladogram construction. He then explains how modern cladograms are constructed and...
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
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
9 Poisonous Plants You Might Have Around Your House
Houseplants can be great for your mental health, but eating some of them can be far worse for your bodily health than you might think. Chapters View all DIEFFENBACHIA 0:47 2 DAFFODILS 2:44 OLEANDER 3:42 RHODODENDRONS 4:39 LILY OF THE...
Bozeman Science
The Cell Membrane
Paul Andersen gives you a brief introduction to the cell membrane. He starts by describing amphipathic nature of a phospholipid and how it assembles into a membrane. He gives an overview of the fluid mosaic model inside cells. He also...
Bozeman Science
Phases of Mitosis
In this video Paul Andersen explains the importance of mitosis and details the major steps in the cell cycle. He explains the importance of Interphase, Prophase, Prometaphase, Metaphase, Anaphase, Telophases, and Cytokinesis.
Bozeman Science
Plant Nutrition and Transport
Paul Andersen explains how nutrients and water are transported in plants. He begins with a brief discussion of what nutrients are required by plants and where they get them. He shows you dermal, vascular and ground tissue in monocot...
Crash Course
Old & Odd: Archaea, Bacteria & Protists - CrashCourse Biology
Hank veers away from human anatomy to teach us about the (mostly) single-celled organisms that make up two of the three taxonomic domains of life, and one of the four kingdoms: Archaea, Bacteria, and Protists. They are by far the most...
Crash Course
Eukaryopolis - The City of Animal Cells: Crash Course Biology
Hank tells us about the city of Eukaryopolis - the animal cell that is responsible for all the cool things that happen in our bodies.
Curated Video
Fluid mosaic model of the cell membrane
The plasma membrane is a complex structure made up of macromolecules that come together to form a fluid mosaic. In this video, we will look at the structure, properties and functions of the fluid mosaic model.
Curated Video
Plasma membrane: the security guard of the cell
The plasma membrane or cell membrane is an intricate structure made of macromolecules that work together to protect the cell. Think of it as the security guard of the cell - letting important substances in, and letting others out.
Curated Video
Phospholipids: types, structure and function
What exactly are phospholipids, and how do they contribute to the structure and function of cell membranes? In this video, we will explore the world of phospholipids, including their chemical structure, properties, and functions in the...
Curated Video
Cell wall
A flexible or rigid boundary protecting a cell, outside the cell membrane. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
Curated Video
Endocytosis
The process by which a cell can take in material from its environment by first engulfing it with its cell membrane. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
Curated Video
Electrolyte
A substance that when molten or dissolved in solution, releases free ions that make it electrically conductive A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
Curated Video
What is a Cell? - Life’s Building Blocks
Every living thing on our planet, from plants to animals, is made up of cells. Cells are the building blocks of life, but what are they and how do they work? Biology - Cells And DNA - Learning Points. All cells have vital genetic...
Curated Video
Agar Cube Diffusion
We use coloured agar cubes to see how different shapes change the rate of diffusion. The cubes are made using sodium hydroxide and phenolphthalein indicator to give them a pink colour. When these are added to hydrochloric acid, the...
Curated Video
Plant vs Animal Cells
We compare plant cells and animal cells under a microscope to see how they differ. Cheek cells are dyed with methylene blue to make the observations possible. Biology - Cells And DNA - Learning Points. Almost all cells are invisible to...
Curated Video
The Cell Membrane
Journey inside the cell to see how the cell membrane acts as both a barrier and an entrance. How does it take in nutrients while keeping out potentially damaging molecules? Biology - Cells And DNA - Learning Points. The cell membrane...
Curated Video
What is a Cell? - Cell Basics
Every organism is made up of cells, but what exactly is a cell? Life processes - Living processes - Cells Learning Points A cell is the most basic unit of life. Cells are the building blocks of all living things. There are many types of...
Wonderscape
Understanding Plant and Animal Cells: Structure and Function
Explore the basic structure and functions of plant and animal cells, the fundamental units of living organisms. Learn about the similarities and differences between plant and animal cells, including the roles of the cell membrane,...
Wonderscape
The Invisible Invaders: Understanding Viruses
Delve into the microscopic world of viruses, learning about their structure, how they differ from living organisms, and their methods of infecting host cells. Understand the components of a virus, including nucleic acids (DNA or RNA), a...
Wonderscape
Differences Between Plant and Animal Cells
Explore the unique features of plant cells compared to animal cells. Learn about the specialized structures such as vacuoles, cell walls, and chloroplasts that distinguish plant cells. Understand how these features contribute to the...