Tag Archives: diffusion

B2 Cells (Combined Science)

All of B2 Revision notes in downloadable word format and here are the key terms and definitions: Key terms B2

GCSE Bitesize – Cell Activity – covers animal & plant cells, movement in & out of cells & cell division (18m). Science in Focus – Cell Biology – a 19m video.

How about seeing some real cells in action? Here is a Trachelius ciliate feeding on a Campanella ciliate, and here is a Paramecium feeding:

For self-assessment questions, with exercises and discussions, just click on the correct topic at Biology GCSE & IGCSE Question Bank. Powerpoints can be downloaded from the same site here. The s-cool revision site lets you revise the topic, summarizes the topic & tests you on it. Skoool gives you a lesson, including progress questions, for each Biology topic but you’ll need sound on for it. 

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Just click to enlarge (thank you LadyofHats).

 

 

 

 

B2.1 CELL STRUCTURE

Science Bank 9 (Cells & Tissues): Part 1- Animal Cells (to 4m 25s); Part 2 – Plant Cells (to 9m 10s); you do not need Part 3.

A short video from The Virtual School about cells & specialized cells:

B2.2 MOVEMENT IN & OUT OF CELLS

You only need to know about the first two sections (diffusion):

Ks4 movement in and out of cells from SUSAN MATHEW

C1 The Particulate Nature of Matter (Combined Science)

What’s in a molecule? – the science of macaroni salad  from TED-Ed (3m 15s).

Some information on solids, liquids and gases (including a decent animation) can be found here. And this is a video on States of Matter from The Virtual School:

Science Bank 4 (Motion of Particles): Part 1 – Brownian motion (to 4m 45s); Part 2 – diffusion (to 9m 45s); Part 3 – changes of state (to 14m 15s):

IGCSE Chemistry: Topic 1 part 1 Particulate Nature of Matter  (6m 30s) & part 2 Diffusion (5m 35s), lessons by Sal Sciab.

Not on the syllabus, but interesting: the invisible motion of still objects:

7G Particle Model of Solids, Liquids & Gases

Solids, liquids and gases from Kesh Dewan

States of Matter, a 3m video from The Fuse School:

KS3 Bitesize higher level – The Particle Model – a 13m video covering States of Matter, Change of State, Gas Pressure & Diffusion:

A 20m 24s video on Solids, Liquids, Gases from Scientific Eye:

Science in Action – States of Matter a 19m 10s video. Scientific EyeChanging State (18m 30s); States of Matter (Curriculum Bites – Wan2tlkScience?), a 9m video.

Liquids that can act like solids – impossible. Or is it? Can you walk on water? (non-Newtonian fluid pool) and Brainiac Science Abuse – John Tickle walks on custard.

Superfluids: superfluid helium and Ben Miller experiments with superfluid helium.

1.4 Membrane Transport

BioKnowledgy 1.4 Membrane transport from Chris Paine (at Dulwich College Shangai) – taken from his fabulous blog BioKnowledgy.

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.

Click on ‘Cellular Transport’ to see an interactive animation from Wiley that covers diffusion, osmosis, passive transport & active transport. Or here for an animated, narrated tutorial on how molecules move across the cell membrane (from Sinauer Associates).

DIFFUSION

A short, simple animation demonstrating diffusion (from St Olaf) and here are two fantastic animated, narrated tutorials from McGraw Hill Education – how diffusion works & diffusion through cell membranes.

FACILITATED DIFFUSION

Short, simple animations demonstrating facilitated diffusion with a channel protein and with carrier proteins – three types: uniport, symport, & antiport  (from St Olaf).

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.

OSMOSIS

A short, simple animation demonstrating osmosis (from St Olaf) or here are two fantastic animated, narrated tutorials from McGraw Hill Education – osmosis & how osmosis works.

ACTIVE TRANSPORT

A short, simple animation demonstrating Secondary Active Transport – the Na/K pump coupled with the glucose/Na symport (from St Olaf).

ENDOCYTOSIS & EXOCYTOSIS

A short, simple animation demonstrating phagocytosis (from St Olaf) or here is a fantastic animated, narrated tutorial from McGraw Hill Education – Endocytosis & Exocytosis – which includes a quiz.

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.

PRESCRIBED PRACTICAL 2 – Osmolarity

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; Diffusion & Osmosis, various LabBench Activities from Pearson

Solids, Liquids & Gases

Some information on solids, liquids and gases (including a decent animation) can be found here. And this is a video on States of Matter from The Virtual School:

Science Bank 4 (Motion of Particles): Part 1 – Brownian motion (to 4m 45s); Part 2 – Diffusion (to 9m 45s): Part 3 – Changes of State (to 14m 15s):

IGCSE Chemistry: Topic 1 part 1 Particulate Nature of Matter (6m 30s) & part 2 Diffusion (5m 35s), lessons by Sal Sciab.

Not on the syllabus, but interesting: the invisible motion of still objects:

IGCSE Bio Topic 3 – Movement into & out of Cells

Ks4 movement in and out of cells from SUSAN MATHEW

Topic 3 revision notes in downloadable word format.

Mr Andersen (from Bozeman High) gives a brief description of osmosis:

And here he talks us through an osmosis practical.

A lesson on Osmosis from Mr Dare:

GCSE Bitesize – Diffusion & Osmosis – a 4m 24s video and Bitesize Top 20 Demos: Osmosis (3m 44s).

Mr W’s Osmosis! rap:

And here’s a long powerpoint:

Osmosis Gummy Bear Lesson PowerPoint, Cell Biology, Cell Transport from www.sciencepowerpoint.com

Here is another presentation, covering the effect of osmosis on cells:

Effects of isotonic, hypotonic & hypertonic solutions on cells from j3di79

ACTIVE TRANSPORT:

A lesson from Mr Dare: