c)+Biological+molecules

Section 2- Structures and functions in living organisms a) Levels of organisation - b) Cell structure - c) Biological molecules - d) Movement of substances - e) Human Nutrition - e) Plant Nutrition - f) Respiration - g) Gas exchange (Humans) - g) Gas exchange (Plants) - h) Transport (Humans) - h) Transport (Plants) - i) Excretion - j) Coordination and response (Humans) - j) Coordination and response (Plants)

2c) Biological molecules
2.5 identify the chemical elements present in carbohydrates, proteins and lipids (fats and oils) 2.6 describe the structure of carbohydrates, proteins and lipids as large molecules made up from smaller basic units: starch and glycogen from simple sugar; protein from amino acids; lipid from fatty acids and glycerol 2.7 describe the tests for glucose and starch 2.8 understand the role of enzymes as biological catalysts in metabolic reactions 2.9 understand how the functioning of enzymes can be affected by changes in temperature, including changes due to change in active site 2.10 understand how the functioning of enzymes can be affected by changes in active site caused by changes in pH 2.11 describe experiments to investigate how enzyme activity can be affected by changes in temperature.
 * Learning outcomes (s//tudents will be assessed on their ability to)//**

This detailed video is a good source of information for enzymes - it illustrates how enzymes are important beyond digestion media type="custom" key="23681126"
 * Starter**

Use the BioK notes outline below to help you build notes for this topic. media type="custom" key="27981625"
 * Approach**

Complete the activities and labs as directed.

Complete the summary questions as directed.

Biological Molecules (2.5, 2.6) p37 - 39 Food tests (2.7) p43 Enzymes (2.8 - 2.11) p4 - 6, 46
 * Greenbook (Edexcel IGCSE Biology) References **

These video tutorials from [|Click4Biology]address each learning outcome you should watch each video before attempting to complete the workbook sections. Download links are provided for those who have trouble accessing Youtube.
 * Video Tutorials**

‪2.5 Elements in biological molecules‬ download media type="custom" key="23681130"

‪2.6 Biological Molecules‬ download media type="custom" key="23681134"

‪2.7 Test Starch and Glucose‬ download media type="custom" key="23681136"

‪2.8 Enzymes‬ download media type="custom" key="23681138" download media type="custom" key="23681142"

‪2.9 Effect of Temperature on the rate of reaction‬ download media type="custom" key="23681146"

‪2.10 Effect of pH on the rate of reaction‬ download media type="custom" key="23681150"

[|Presentation of carbs, lipids and proteins] from the DCS bridge
 * Tutorials**

2.7 Food Tests Excerpts from an [|Education Using PowerPoint slideshow] on how to carry out simple food tests [|This s-cool.co.uk tutorial] covers nutrition as a whole, but the first page gives a useful overview of carbs, lipids and proteins and how we can test for them

2.8-2.10 Enzymes Here's a good McGraw and Hill tutorial on how enzymes work The [|s-cool.co.uk tutorial] includes notes and a quiz to test learning The [|tutorial from ABPI] is a good thorough one (uses of enzymes and immobilised enzymes you don't have to know about, but is useful extra information) Review the [|KScience] animations and the click4biology video tutorial [|ClickBiology] Presentation on Enzymes A useful [|overview of enzymes] and how denaturing works from Biotopics

2.5, 2.6 Will focus on the workbook and a review of it
 * Possible activities**

2.7 Food Tests - complete the food tests lab work and report as outlined here.

2.8-2.10 Enzymes - complete the [|worksheet] to test your preparation and understanding

2.11 Carry out a practical investigation to show the affect of temperature upon amylase. For this first investigation a simple method is given to you along with guidance on how to produce your lab report.
 * Labs**

If enzymes were a movie what type of movie would they be? A horror movie, a romance, a comedy, an action movie or something else? In your answer refer to enzymes, substrates, products, pH, temperature, substrate concentration, biological catalyst.
 * Extension**

(will be updated from time to time)
 * Useful links**