Category Archives: B1 Characteristics, B2 Cells, B3 Enzymes

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

B3 Enzymes (Combined Science)

Here are key terms and definitions: Key terms B3

For self-assessment questions, with exercises and discussions, just click on ‘The chemicals of living cells’ (qu.13 onwards) at Biology GCSE & IGCSE Question Bank. A powerpoint (the chemicals of living cells) can be downloaded from the same site here. The s-cool revision site lets you revise the topic, summarizes the topic and tests you on it. GCSE Bitesize has revision pages (that take you through the topic), a test and an activity.

Effect of Temperature and pH on enzyme activity from clairebloom

Science Bank 8: you just need Part 3 (from 9m 55s) – Enzymes – biological catalysts & factors affecting their rate:

Two videos on Enzymes – 4m 19s vid from GCSE Bitesize and 2m 48s from Clipbank video resources.

A simple animated tutorial from McGraw Hill Education on how enzymes work.

Mr W sings ‘Enzymes!’: