QR Challenge: Macro Rev Q1-20

Created using the ClassTools QR Treasure Hunt Generator

Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

• Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
• Bring these devices into the lesson.

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

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B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

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C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

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Questions / Answers (teacher reference)

Question	Answer
1. 1-All organic molecules contain carbon	1
2. 2-Dehydration synthesis is the process that joins two or more monomers to form a polymer. As a result, it gives water as a by-product of this reaction.	2
3. 3-Hydrolysis is a chemical process in which a certain molecule is split into two parts by the addition of a molecule of water	3
4. 4-Lipids are hydrophobic. They have (C) and hydrogen (H) and oxygen. Carbohydrates also contain C, H, O; but are hydrophilic. Their monomers can join to form complex sugars (ex. polysaccharides). They usually form a ring structure (ex. hexagon shape)	4
5. 5-Glycogen is the primary short term energy storage in animal cells. Is the storage form of glucose.	5
6. 6-Starch is an example of a complex sugar (polysaccharide = a type of carbohydrate)	6
7. 7-Glucosse – main energy source; cellulose – used to make structure of plants (ex. fiber)	7
8. 8-Monosaccharides- simple sugars made of 1 ring structure; Polysaccharides are made of 10+ sugar units linked together. They are both types of carbohydrates used for energy.	8
9. 9-Lipids: fats, oils, waxes, phospholipids, steroids. Examples of steroids include: hormones and cholesterol	9
10. 10-A triglyceride is made of a glycerol backbone and 3 fatty acids.	10
11. 11-Lipids will not dissolve in water because it doesn’t have polar ends. It is mostly made up of nonpolar hydrocarbon chains.	11
12. 12-Amino acids are the monomer of proteins. All amino acids contain a NH2 and COOH group and only differ in their R-group (variant group).	12
13. 13-Nucleic acids are long strands of repeating sub-units (monomers) called nucleotides. Funtion=hold genetic information & code for proteins.	13
14. 14-The function of proteins include: transport, defense against diseases, make up structures (ex. hair, muscles), facilitate chemical reactions (ex. enzymes). Elements are: C, H, O, N.	14
15. 15-The active site on an enzyme has a unique geometric shape that is complementary to the geometric shape of a substrate molecule. Allowing enzymes to specifically react with only one or a very substrates	15
16. 16-A substance that speeds the rate of a chemical reaction without itself undergoing any permanent chemical change. A biological catalyst (found in organisms) is an enzyme.	16
17. 17-They speed up the rate of the chemical reaction AND lower the activation energy required.	17
18. 18-The binding of the substrate to the enzyme causes changes in the distribution of electrons in the substrate's bonds. This weakens the bonds on the substrate which speeds up a chemical reaction & the production of a product.	18
19. 19-Some reactions in our bodies would happen too slowly in the absence of enzyme. Ex.: the waste product hydrogen peroxide would build up to toxic levels in our bodies in its absence.	19
20. 20-Changes to the environment. Ex: lowering or increasing the: pH, temperature or salt concentration.	20

 

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