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QR Challenge: Microbial Growth

Created using the ClassTools QR Treasure Hunt Generator

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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

3. Print out the QR codes.

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

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!

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.

Questions / Answers (teacher reference)

Question

Answer

1. 1. Which organisms obtain their energy from inorganic molecules and use CO2?chemoautotrophs
2. 2. Which organisms obtain their energy from light and use organic molecules?photoheterotrophs
3. 3. In which phase of bacterial growth would you see cell dividing at same rate as dying?Stationary
4. 4. Bacterial growth is exponential due to the fact bacteria divide by what process?binary fission
5. 5. Antibiotics are most effective during which phase of growth?log phase
6. 6. A culture starts with 50 bacterium. How many would be present after 5 generations?3200
7. 7. All bacteria are found in the bottom of thioglycolate tube. What type of bacteria are these?obligate anaerobes
8. 8. All bacteria are found at the top of thioglycolate tube. What type of bacteria are these?obligate anaerobes
9. 9. Why are microaerophiles found slightly below the surface of a thioglycolate tube?too much O2 is toxic, but they need some
10. 10. Most human pathogens are found what type of "philes"?meso, neutro
11. 11. Bacteria found in the heat vents in ocean would be what type?thermophiles
12. 12. Bacteria in Antarctica are what type?psychrophiles, psychrotrophs
13. 13. Bleach is used to killed bacteria because there are few of these type of bacteria?alkaliphiles
14. 14. Bacteria that are halophiles can live where?a high salt environment
15. 15. The size of a bacteria group can be determined when the bacteria do what?quorum sensing
16. 16. Which type of medium is used of you want to stop the growth of specific microbes?selective
17. 17. What is lyophilization?drying of bacteria to preserve them
18. 18. Why does changing the pH of an area kill bacteria?proteins get denatured
19. 19. Bacteria that have an undulate margin look like?wavy line
20. 20. If a colony is punctiform, what does it look like?very tiny

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=1._Which_organisms_obtain_their_energy_from_inorganic_molecules_and_use_CO2?

Question 1 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=2._Which_organisms_obtain_their_energy_from_light_and_use_organic_molecules?

Question 2 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=3._In_which_phase_of_bacterial_growth_would_you_see_cell_dividing_at_same_rate_as_dying?

Question 3 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=4._Bacterial_growth_is_exponential_due_to_the_fact_bacteria_divide_by_what_process?

Question 4 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=5._Antibiotics_are_most_effective_during_which_phase_of_growth?

Question 5 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=6._A_culture_starts_with_50_bacterium.__How_many_would_be_present_after_5_generations?

Question 6 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=7._All_bacteria_are_found_in_the_bottom_of_thioglycolate_tube.__What_type_of_bacteria_are_these?

Question 7 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=8._All_bacteria_are_found_at_the_top_of_thioglycolate_tube.__What_type_of_bacteria_are_these?

Question 8 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=9._Why_are_microaerophiles_found_slightly_below_the_surface_of_a_thioglycolate_tube?

Question 9 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=10._Most_human_pathogens_are_found_what_type_of_"philes"?

Question 10 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=11._Bacteria_found_in_the_heat_vents_in_ocean_would_be_what_type?

Question 11 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=12._Bacteria_in_Antarctica_are_what_type?

Question 12 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=13._Bleach_is_used_to_killed_bacteria_because_there_are_few_of_these_type_of_bacteria?

Question 13 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=14._Bacteria_that_are_halophiles_can_live_where?

Question 14 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=15._The_size_of_a_bacteria_group_can_be_determined_when_the_bacteria_do_what?

Question 15 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=16._Which_type_of_medium_is_used_of_you_want_to_stop_the_growth_of_specific_microbes?

Question 16 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=17._What_is_lyophilization?

Question 17 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=18._Why_does_changing_the_pH_of_an_area_kill_bacteria?

Question 18 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=19._Bacteria_that_have_an_undulate_margin_look_like?

Question 19 (of 20)

 


Microbial Growth: QR Challenge

https://www.classtools.net/QR/decode.php?text=20._If_a_colony_is_punctiform,_what_does_it_look_like?

Question 20 (of 20)