This video covers:<br/>
- What surface area to volume r<br/>atio means
- How to calculate s<br/>urface area and volume
- Why large organisms need specialised exchange surfaces and transport systems

Explore the parts of the cell membrane with The Amoeba Sisters! Video discusses phospholipid bilayer, cholesterol, peripheral proteins, integral proteins, glycoproteins, and glycolipids - as well as why the surface area to volume ratio...

The elephant is a creature of epic proportions -- and yet, it owes its enormity to more than 1,000 trillion microscopic cells. And on the epically small end of things, there are likely millions of unicellular species, yet there are very...

The lower half of Mr. Andersen's head explains why cells are small. This video begins with a simple geometry problem and ends with a discussion of Allen's Rule and reasoning for the microscopic nature of cells.

In this video, the concept of transport of substances into and out of cells is explained. The different ways in which this process occurs are discussed, including diffusion, osmosis, and active transport. The importance of surface area...

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...

Why are cells small in size

This video discusses the concept of diffusion in biology, with a focus on what affects the rate of diffusion and its impact on organisms. The video explains that the rate of diffusion is affected by the concentration gradient,...

Did you know that some organisms exist of just one cell? These simple organisms, like amoeba, are unicellular. They depend on simple diffusion for life They are usually too small to be visible to the naked eye, like bacteria, and so we...

Paul Andersen explains how living organisms exchange matter with the environment. The importance of the surface area to volume ratio is emphasized using a simple mathematical model. The essential chemicals for life; water, carbon,...

This video explains the concept of efficient transport and exchange in organisms. It discusses the importance of exchanging substances with the environment, such as taking in oxygen and getting rid of waste. The video explains surface...

This video explains what nanoparticles are and how their small size affects their physical and chemical properties, particularly in relation to their surface area-to-volume ratio. The video highlights potential applications of...

In this video we have a look at the similarities and differences between prokaryotic and eukaryotic cells. All cells are either prokaryotic or eukaryotic. Organisms with prokaryotic cells are called prokaryotes, and organisms with...

In this video we have a look at the similarities and differences between prokaryotic and eukaryotic cells. All cells are either prokaryotic or eukaryotic. Organisms with prokaryotic cells are called prokaryotes, and organisms with...

Unicellular vs Multicellular | Cells | Biology | FuseSchool Did you know that some organisms exist of just one cell? These simple organisms, like amoeba, are unicellular. They depend on simple diffusion for life They are usually too...

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....

What is it about hexagons that makes them the perfect building blocks for beehives? Discover why they are the best use of space. Maths - Shape A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s math...