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 :
- Course Specification for National 5 Biology Go to page 25 of these notes where you will see listed what you need to know in the first two columns - you must make sure you at least know the various things mentioned here - it is good to use as a basis of your revision - https://www.sqa.org.uk/files_ccc/n5-course-spec-biology.pdf
- BBC Bitesize is good for revision: https://www.bbc.com/bitesize/subjects/zync87h
- National 5 Biology - SQA Past Papers and Answers http://www.sqa.org.uk/pastpapers/findpastpaper.htm?subject=Biology&level=N5
- A specimen National 5 Biology exam paper to try (answers are at the end!): https://www.sqa.org.uk/files_ccc/BiologySQPRN5.pdf
- Model Paper from Hodder Gibson online: https://www.hoddereducation.co.uk/media/Documents/Gibson/Model%20Papers%202018/2018-N5-Biology.pdf
- This is a link which is useful for teachers about experiments you can do during the course https://www.sserc.org.uk/subject-areas/biology/biology-national-5/
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Some Revision Links
- Revision - Oronsay Fantastic Revision Resources/Quizzes for National 5 Biology from a teacher I guess who lives on Mull at Oronsay Guest House! http://www.oronsay.org/Nat5.htm
- eChalk Learning Materials Some of these interactive learning materials are very good - and some nice photographs of cells. You can preview the materials or pay to join the site for a year: http://www.echalk.co.uk/Science/biology.aspx
Unit 1 - Cell Biology
Key Area 1.1 Cell Structure
- Animated Interactive Cell - very nice! https://www.centreofthecell.org/learn-play/games/explore-a-cell/
- A couple of Interactive Online Quizzes about the Structure of a Leaf - http://www.curriculumbits.com/prodimages/details/biology/bio0021.html -- http://www.curriculumbits.com/prodimages/details/biology/structure-of-a-leaf.html
The Scale of Cells
Use the scale to zoom in and see the size of some human cells, an E.Coli bacteria and some viruses in comparison with eg a coffee bean or a grain of rice
https://learngendev.azurewebsites.net/content/cells/scale/
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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
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Single Celled creatures
Paramecium -
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OsmosisVideo of Plasmolysis in an Onion Cell when its placed in a 15% salt solution
Can you explain why the onion cells are plasmolysing?
also see: https://www.gtac.edu.au/wp-content/uploads/2016/01/Osmosis_RedOnion_LabPreparation.pdf
Experiment on Osmosis in Potatoes
Shows how to do the experiment. And there are some results at the end that you could use if you can't do the experiment yourself. Though you could try this experiment at home fairly easily.
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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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Key Area 1.3 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.)
Key Area 1.4 Proteins
Proteins and Enzymes
An Enzyme Experiment with Pineapples to Try at Home !
The effect of enzymes pineapples and why they are used in cooking https://www.thespruceeats.com/flesh-eating-enzymes-of-pineapple-and-papaya-4047013
Using the enzyme in Pineapples in a Hospital for treatment https://www.dailyrecord.co.uk/news/health/scots-hospital-using-pioneering-new-22885421
Catalase enzyme in Liver experiment - nice demo -
https://www.youtube.com/watch?v=lWcMox3e2Dk
Key Area 1.5 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
Key Area 1.6 Respiration
- use my Powerpoint here ....
Unit 2 - Multicellular Organisms
Key Area 2.1 Producing New Cells
Mitosis in Onion Root Tip Cells
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Thanks for great image from Berkshire Community College Bioscience Image Library / CC0 - click on it for more information
Zoomable photos of mitosis
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.
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 -
eg growing new skin for this boy:
https://www.theguardian.com/science/2017/nov/08/scientists-grow-replacement-skin-for-boy-suffering-devastating-genetic-disorder
The first few pages here are relevant to National 5 Biology about stem cells but read on if you are interested:
https://www.abpischools.org.uk/topic/stem-cells/1/1
Meristems
in a plant
https://www.youtube.com/watch?v=h9kCPO7oMf8&feature=youtu.be
Meristem in a Broad Bean seedling experiment:
Key Area 2.2 Control and Communication
The "moro reflex" is a reflex action that you will find in a baby - why do you think babies do this?Key Area 2.3 Reproduction
Parks of a Flower
Diagram from LadyofHats, Public domain, via Wikimedia Commons
Key Area 2.4 Variation and Inheritance
My Monohybrid Cross Quiz
Nice video on here from BBC Bitesize:
https://www.bbc.co.uk/bitesize/guides/ztwdgdm/revision/3
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Key Area 2.5 - Transport Systems - Plants
Plants - Xylem / Phloem - sugar / water etc
https://camtools.cam.ac.uk/access/content/group/5234dd8c-893c-44c2-ba59-69f09f2f02ab/Public/Animation%204/index.html
Key Area 2.6 - Transport Systems - Animals
The heart - animation
https://www.youtube.com/watch?v=3IrjBWhdZ6s
Animation of the Heart:
https://www.abpischools.org.uk/full-screen-animation/597/592
Animation of the Heart:
https://www.abpischools.org.uk/full-screen-animation/597/592
Key Area 2.7 - Absorption of Materials
http://www.nhlbi.nih.gov/health/dci/Diseases/hlw/hlw_when.html
Breathing Animation
This video shows how you can make a model of the lungs with the diaphgragm:
Gas exchange in Breathing - which gases are in inhaled and exhaled air?
You could make a pie chart ... https://www.bbc.co.uk/bitesize/guides/z9hycdm/revision/3
Unit 3 Life on Earth
Food Chains
Help Deadly 60's Steve find the food chain's deadliest predator :
https://www.bbc.co.uk/cbbc/shows/deadly-60
Ecosystems - Habitat - Indicator Species
Lichens can be an indicator species with the finer lichens indicating pure air - here is a nice guide to the different types of liches
https://www.field-studies-council.org/shop/publications/lichens-of-heaths-and-moors-guide/
How to use Lichen as an indicator species:
https://www.field-studies-council.org/shop/publications/lichen-based-index-to-nitrogen-air-quality/
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
Very good re the T on a leaf and starch test - certainly from half way through: https://www.youtube.com/watch?v=YtvyFOvbgu8
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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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
