Category Archives: 1. Cell Biology

Topic 1 Cell Biology

Here are some past essay questions: Topic 2 Cells essay qus

Here are video tutorials for many assessment statements in topic 1 – just click on the one you want. Thank you to Stephanie Castle (at UNIS, New York).

How about seeing some real cells in action? Here is a Trachelius ciliate feeding on a Campanella ciliate, and here is a Paramecium feeding. And how about ten craziest things cells do.

And here is a cool animation showing the dynamic world that is the inner life of a cell (the second version is narrated):

A great revision quiz from Mr Exham, covering topic 1:

IB Biology Revision Quiz – Core 1 Cell Biology from mrexham

1.1 Introduction to Cells

How about a video lesson from Dan Rott or an animated, narrated tutorial on the scientific method and where life comes from (from Sinauer Associates)?


The wacky history of cell theory: a 6m TED-Ed video form Lauren Royal-Woods. Here are a couple of videos on unicellular life: Protists (4m 11s) and Protista from Mr Andersen (5m).


Check out this great interactive Cell Size & Scale graphic. What is the biggest single-celled organism? – a 4m TED-Ed lesson from Murry Gans.

Surface Area to Volume RATIO

The importance of surface area to volume ratio, a 2m 44s video from Stephanie Castle.


Thank you Mr Andersen. How about Stephanie Castle’s 1m video Emergent Properties or Alex Lee’s 11m video Cell Theory – emergent properties – differentiation.


What are stem cells?, from TED-Ed.

The therapeutic use of stem cells (2m vid from Stephanie Castle); Stem Cells (4m from SciShow); the ethics of stem cells: South Park. Stem cell treatment cures blindness (3m vid).

Immortal cells? Henrietta may have passed away, but her cells live on. Stem Cells: activities and information from Learn.Genetics.


This presentation is revision by drawing from Mr Taylor of iBiology. It covers the old syllabus but is very good:

Draw The Core from Stephen Taylor – another excellent Ms Green presentation on Measuring, SI units & Uncertainty.

PRESCRIBED PRACTICAL 1 – Microscope drawing

Use of a light microscope to investigate the structure and ultra-structure of cells and tissues, with drawing of cells and calculation of the magnification of drawings and the actual size of structures shown in drawings or micrographs.

Magnification – notes from BioNinja

Calculating the magnification and the actual size of structures, a 4m video from Stephanie Castle.

1.2 Ultrastructure of Cells

IB Biology 1.2 Slides: Ultrastructure of Cells from Jacob Cedarbaum
1.2 Ultrastructure of Cells notes to complete (created by Mrs Green).

Ultrastructure of cells in 9m from IB Screwed:

Drawing Prokaryotic Cell Ultrastructure from IB Screwed; drawing eukaryotice cell ultrastucture from Stephanie Castle.

Biology: Cell Structure an excellent 7m video that covers prokaryotes and eukaryotic organelles.























The 100 greatest scientific discoveries: the discovery of Hydrothermal Vents – a 5m video – and a new form of life, the Archaea – a 3m video. In Crash Course Biology #35, Hank Green describes Old & Odd: Archaea, Bacteria & Protists in a 12m video.


Prokaryotic vs Eukaryotic Cells – a 3m 44s video from RichocetScience.

Here’s an animated, narrated tutorial on eukaryotic organelles (from Sinauer Associates).

Here is a short, animated & narrated tutorial from McGraw Hill Education – Lysosomes.

In Crash Course Biology #4 – Eukaryopolis – the city of animal cells, Hank tells us about the city of Eukaryopolis – the animal cell that is responsible for all the cool things that happen in our bodies.
Mr W’s The Cell Song is good for revising the organelles.

Here Paul Andersen takes you on A Tour of the Cell and the lower half of Mr. Andersen’s head explains Why Cells Are Small.

Documentary – Our Secret Universe The Hidden Life of the Cell – a 49m video. And here are the Organelles of a human cell in 4m 38s.


Intro video in 1 minute: The Endomembrane System; Richochet Science gives us The Endomembrane System in 3m; 3m27s Protein Trafficking.

1.3 Membrane Structure





The endomembrane system of the cell (click to enlarge)



1.3 Membrane Structure notes to complete (created by Ms Green).

Here Stephanie Castle explains 1.3 Drawing the Fluid Mosaic Model in a 2m video. Mr Andersen covers Cell Membranes in 11m and here is the history of membrane structure models in 11m.

1.4 Membrane Transport


1.4 Membrane Transport notes to complete (created by Ms Green).

A 13m 35s video lesson from Dan Rott:

Some assessment statements are covered in videos by Stephanie Castle.

An animated, narrated tutorial on how molecules move across the cell membrane (from Sinauer Associates) and Cell Transport from McGraw Hill.


A fantastic animated, narrated tutorials from McGraw Hill Education on how diffusion works


An animated, narrated tutorial on the three types of carrier proteins (from Sinauer Associates).

Or here are is a fantastic animated, narrated tutorial from McGraw Hill Education – how facilitated diffusion works.


An animated, narrated tutorial from McGraw Hill Education – how osmosis works.


The Na/K pump from McGraw Hill or here from RichochetScience.


An animated, narrated tutorial from McGraw Hill Education – Endocytosis & Exocytosis.

And here is an animated, narrated tutorial on vesicle budding &  fusing which also includes a quiz (from Sinauer Associates).

Here Paul Andersen gives you a brief introduction to The Cell Membrane.

Mr W’s Cell Membranes rap is good revision as is his Osmosis! rap.

In Crash Course Biology #5 – In Da Club – Membranes & Transport, Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.


Estimation of osmolarity in tissues by bathing samples in hypotonic and hypertonic solutions

Osmolarity – notes from BioNinja

Estimation of osmolarity in tissues, a 7m video from Stephanie Castle.

1.5 The Origin of Cells

1.5 The Origin of Cells notes to complete (created by Ms Green).

A 10m video lesson from Dan Rott:

Can Science explain the origin of life? – a fantastic 7m video from Stated Clearly:

Stated Clearly have also made this 9m video What is Chemical Evolution? , in 7m, What is the RNA World Hypothesis? and in 8m, What caused life’s evolutionary transitions?

This is a fantastic 15m video from Martin Hanczyc at TED: The line between life and not life


The powerpoint covers all that we need to know, the following is more detailed than we need but it’s interesting – this is how life began! Paul Andersen describes how Abiogenesis could have occurred on Earth and discusses Scientific Evidence of The Origin of Life on our planet.

What was the Miller-Urey experiment? – a 7m 30s video from Stated Clearly and an animation about this famous experiment can be found here.

RNA – The Discovery of Ribozymes: Dr. Thomas Cech discusses RNA, its characteristics, and its ability to act as an enzyme (9m 30s).


A fantastic animated, narrated tutorial from McGraw Hill Education – Endosymbiosis – or here’s one from Sinauer Associates that includes an activity – the Endosymbiont theory. And here are short video clips discussing the endosymbiotic theory (4m 17s): How did the evolution of complex life on Earth begin? – The Gene Code – or How we think complex cells evolved – a 6m TED-Ed lesson from Adam Jacobson.

LOUIS PASTEUR’S EXPERIMENT (to disprove Spontaneous Generation)

Explained here in note form or Hank tells us about 3 world-changing Biology experiments (#1 is Pasteur’s and #3 is Miller-Urey’s) in a 4m 34s video.

Maybe you’ll find a video lesson covering some assessment statements by Stephanie Castle.

1.6 Cell Division

1.6 cell division from Bob Smullen

1.6 Cell Division notes to complete (created by Ms Green).

A 12m video lesson from Dan Rott:

Many assessment statements are covered in video lessons by Stephanie Castle.

Here are some fantastic animated, narrated tutorials from McGraw Hill Education – how the Cell Cycle works, Mitosis & Cytokinesis. And here is an animated, narrated tutorial on Mitosis which also includes a quiz (from Sinauer Associates).

VCell productions’ animation Mitosis (6m 11s) is brilliant. We do need to know Prophase, Metaphase, Anaphase & Telophase, but not ‘prometaphase’:

Mitosis Rap: it’s bad but it’s good:

Mr Andersen describes Mitosis for us:

In Crash Course Biology #12 – Mitosis: Splitting up is Complicated, Hank describes mitosis and cytokinesis – the series of processes our cells go through to divide into two identical copies.


The cell cycle and cancer – an interactive animation from HHMI; Inside Cancer – a series of presentations from CSH Laboratory.