National 5 Biology

Here are some useful materials to help you enjoy learning Biology at National 5 Level.

The first section has more General links for the whole course and following that I have listed links to the specific Units in the National 5 Biology Course

General Course Information :

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Unit 1 - Cell Biology

Cell Structure
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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
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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
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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
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Diffusion / Osmosis / Active Transport

Animation on Page 3 of this explanation about Kidneys: http://www.abpischools.org.uk/page/modules/homeostasis_kidneys/kidneys3.cfm?coSiteNavigation_allTopic=1
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Producing New Cells

Have a look at photographs of mitosis and you can even zoom in yourself on the root tip of an onion to see if you can spot the different stages of mitotic cell division :
http://www.vcbio.science.ru.nl/en/virtuallessons/mitostage/

Remember Mitosis - happens in your TOEsis - and all normal cells of your body.

DNA and production of Proteins

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 - too complicated for National 5 but might be of interest - 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

Genetic Engineering
Information about Golden Rice - a genetically modified crop plant:
https://www.sserc.org.uk/wp-content/uploads/2013/07/PD_dilA6-gold-rice-def.pdf

Respiration
- use my Powerpoint here ....

Unit 2 - Multicellular Organisms

Revision booklet for Unit 2 - excellent resource from Fife
http://publications.1fife.org.uk/uploadfiles/publications/c64_N4unit2summarynotes.pdf

Plant Cells in a Leaf Diagram
from : https://commons.wikimedia.org/wiki/File%3ALeaf_Tissue_Structure.svg

Stem cells
Stem cells can be used for therapy - and this teenage girl provided a very much needed match for a patient needing a bone marrow transplant
http://www.sserc.org.uk/images/Biology/Multicellular%20Organisms%20N4/Stem_Cells/Reports/SC_report5.pdf

Making a stem cell from a differentiated cell - an inducted Pluripotent cell
This discovery is so important it won a Nobel Prize - probably the biggest prize in Science
http://www.eurostemcell.org/factsheet/ips-cells-and-reprogramming-turn-any-cell-body-stem-cell

Meristems 
in a plant
https://www.youtube.com/watch?v=h9kCPO7oMf8&feature=youtu.be

Meristem in a Broad Bean seedling experiment:


A good animation of ADH Anti diuretic hormone affecting whether kidneys keep water in the body or leave it to go out in urine :
http://www.abpischools.org.uk/page/modules/hormones/horm8.cfm?coSiteNavigation_allTopic=1

Hormones - ADH small animation http://highered.mheducation.com/sites/0072495855/student_view0/chapter20/animation__hormonal_communication.html

Variation and Inheritance
Breathing
http://www.nhlbi.nih.gov/health/dci/Diseases/hlw/hlw_when.html

Breathing Animation
Pull the diaphragm in this animation to see how breathing works :
http://www.freezeray.com/flashFiles/breathing.htm

The Heart
an animation of the heart working
http://www.educationscotland.gov.uk/highersciences/humanbiology/animations/cardiaccycle.asp

Plants - Xylem / Phloem - sugar / water etc
https://camtools.cam.ac.uk/access/content/group/5234dd8c-893c-44c2-ba59-69f09f2f02ab/Public/Animation%204/index.html


Unit 3 Life on Earth

Food Chains

Help Deadly 60's Steve find the food chain's deadliest predator :

http://www.bbc.co.uk/schools/ks2bitesize/science/living_things/food_chains/play.shtml

Photosynthesis
An interesting short two minute video about photosynthesis :
http://www.teachersdomain.org/asset/tdc02_vid_photosynth/

To see 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 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 :



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Still to find a place to put this ! ... Lichen testing - indicator species- http://www.field-studies-council.org/media/668688/aidgap_test_version_guide_to_the_lichen_based_nitrogen_air_quality.pdf
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The following is not in National 5 content -

How the Ear Works
An animated video about how the ear works - don't worry too much about the words used for the small bones in the ear hear as there are various names for them, but watch the animation :
http://www.youtube.com/watch?v=tkPj4IGbmQQ&feature=related