Firstly more general bits and pieces :
Past Papers:
http://www.cie.org.uk/
Some revision guides you can pay to join
https://www.savemyexams.co.uk/igcse-biology-cie.html
UNIT 1
Classification
Domain Kingdom Phylum Class Order Family Genus Species
http://www.mensaforkids.org/teach/lesson-plans/classifying-animals/
For humans we would be classed as follows:
Domain - this is right at the top - there are 3Domains and Humans would be Eukaryote
Kingdom - Animals
Phylum - Chordates (backbone)
Mammals (fur / produce milk)
Primates (collar bone and grasping fingers)
Hominids (flat faces / 3D vision)
Homo (upright posture / large brains !)
Sapiens (large forehead / thin skull)
Animal Kingdom - Plant Kingdom etc - Classification
Here is how humans are classified :
bit of confusion about where algae (which can photosynthesise) are classified :
this is good from Wikipedia : https://en.wikipedia.org/wiki/Algae
The largest phylum is arthropods ... followed by .... molluscs ! - lots of mollusc info here: http://www.molluscabase.org/
Arthropods
Cell Structure
- Animated Interactive Cell - very nice! http://www.centreofthecell.org/interactives/exploreacell/index.php
- SSERC - http://www.sserc.org.uk/index.php/biology-2/biology-resources/biology-national-4
- Who Wants to Be A Millionaire - Cell Structure and Functions game - See how far you can get in these questions from Centre of the Cell ! - http://www.centreofthecell.org/lessonplans/ks3_designed_for_the_job.pdf
A bit about Microscopes and working out sizes of cells / magnification etc.
http://www.bbc.co.uk/education/guides/zgcxsbk/revision/4
Transport across Membranes
- Osmosis - Plasmolysis in an Onion Cell when its placed in 15% salt solution - watch the video but ignore the explanation on YouTube as at the time of writing this, their explanation is incorrect. Can you explain why the onion cells are plasmolysing? https://www.youtube.com/watch?v=gWkcFU-hHUk
Single Celled creatures
Paramecium - https://www.ebiomedia.com/the-biology-classics-paramecium.html
and also at :
https://www.ebiomedia.com/The-Biology-Classics/Paramecium-Hydra-Planaria-Daphnia/flypage-video.tpl.html?redirected=1
___________________________________________
Osmosis
Plasmolysis in an Onion Cell when its placed in 15% salt solution - watch the video but ignore the explanation on YouTube as at the time of writing this, their explanation is incorrect. Can you explain why the onion cells are plasmolysing ? https://www.youtube.com/watch?v=gWkcFU-hHUk
___________________________________________
Diffusion / Osmosis / Active Transport
___________________________________________
DNA
All the chromosomes in a nucleus -
Thanks to Dietzel65 for the photograph from wikimedia commons - https://commons.wikimedia.org/wiki/File:PLoSBiol3.5.Fig7ChromosomesAluFish.jpg
(extra explanation - might be of interest - image shows Karyotype from a female human lymphocyte (46, XX). Chromosomes were hybridized with a probe for Alu sequences (green) and the rest was counterstained with TOPRO-3 (red stain). The green Alu sequence markers show chromosomes and chromosome bands rich in genes.)
Proteins and Enzymes
An Enzyme Experiment with Pineapples to Try at Home !
Catalase enzyme in Liver experiment - nice demo -
https://www.youtube.com/watch?v=lWcMox3e2Dk
Respiration
Photosynthesis
An interesting short two minute video about photosynthesis :
http://www.teachersdomain.org/asset/tdc02_vid_photosynth/
To see oxygen bubbles given off when light lands on Elodea pondweed plant - this is a nice short video to show this happening - https://www.youtube.com/watch?v=xRMKiLlpATk
Starch in Leaf Test Experiment
Excellent short video of this experiment : https://www.youtube.com/watch?v=VeU7ULL9Usw
Limiting Factors in Photosynthesis
The three limiting factors which we study are temperature, availability of carbon dioxide and light intensity. The Bitesize website has a good explanation of the types of questions involving graphs which you might come across :
http://www.bbc.co.uk/bitesize/higher/biology/cell_biology/photosynthesis/revision/5/
