Tag Archives: osmosis

11.3 The Kidney & Osmoregulation

A powerpoint of the OLD syllabus – much is still relevant though.

A nice introduction to how the kidneys work (from TED-Ed):

Mr Paul Andersen (from Bozeman High) describes Osmoregulation (including in fish which you don’t need to know) in a 8m 57s lesson.

An animated tutorial from McGraw Hill Education on basic Renal processes and here’s an animated, narrated tutorial on the mammalian kidney which also includes a quiz (from Sinauer Associates).

In Crash Course Biology #29 – The Excretory System: From Your Heart to the Toilet, Hank takes us on the fascinating journey through our excretory system to learn how our kidneys make pee.

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.

B2 Cells

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).

B2.2 Movement into & out of cells

Ks4 movement in and out of cells from SUSAN MATHEW

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

And here he talks us through an osmosis practical.

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

B2.2 Revision notes in downloadable word format.

Mr W’s Osmosis! rap:

And here’s a long powerpoint:

TEXTBOOK REVISION

IGCSE Biology: Coursebook, chapter 2, pp.13 – 17 & chapter 3, pp.20 – 28

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