QR Challenge: Cell Cycle QR Hunt

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. The cell cycle is the life cycle of the cell and it consists of three main stages. What are the three main stages of the cell cycle?	(interphase, mitosis, and cytokinesis)
2. 2. What are the six steps of the cell cycle in order (starting with interphase)?	(interphase, prophase, metaphase, anaphase, telophase, cytokinesis)
3. 3. In this phase of the cell cycle, the cell is living its life and performing life functions. Nerve cells conduct impulses, muscle cells contract to move, etc. What phase of the cell cycle is this?	(interphase)
4. 4. In this phase of the cell cycle, the nuclear membrane dissolves, centrioles move to the poles of the cell, and chromosomes condense into “X” shapes. Mitosis has begun! What phase of the cell cycle is this?	(prophase)
5. 5. In this phase of the cell cycle, the chromosomes are pulled to the equator of the cell by the spindle fibers (attached to their centromeres). What phase of the cell cycle is this?	(metaphase)
6. 6. In this phase of the cell cycle, the chromatids separate and are pulled to opposite poles of the cell. What phase of the cell cycle is this?	(anaphase)
7. 7. In this phase of the cell cycle, mitosis is complete. Two new nuclei are formed. What phase of the cell cycle is this?	(telophase)
8. 8. In this phase of the cell cycle, the cytoplasm splits to form two daughter cells. What phase of the cell cycle is this?	(cytokinesis)
9. 9. What four phases of the cell cycle make up the stage of mitosis?	(prophase, metaphase, anaphase, and telophase; cytokinesis and interphase are not part of mitosis but are part of the cell cycle.)
10. 10. When interphase is over, the chromosomes each consist of two sister _____________ connected by a _____________.	(two sister chromatids connected by a centromere. You must have these answers in the right order to get credit for this question.)
11. 11. How is the cell cycle a little different in plant and animal cells?	(In plant cells, cytokinesis involves forming a cell plate, which will grow into a new cell wall between the daughter cells. In animal cells, organelles called centrioles help pull cellular materials apart during cell division)
12. 12. In the process of mitosis, how many times are the chromosomes copied?	(The existing chromosomes are copied ONCE, resulting in two sets of everything)
13. 13. This image shows which phase of the cell cycle? Hint: notice how this cell looks “normal” like most of the cells we had seen before we learned about the cell cycle.	(interphase)
14. 14. This image shows which phase of the cell cycle? Hint: Notice how condensed and rod-like the genetic material looks here.	(prophase)
15. 15. This image shows which phase of the cell cycle?	(metaphase)
16. 16. This image shows which phase of the cell cycle?	(anaphase)
17. 17. This image shows which phase of the cell cycle? Hint: Notice that there are two nuclei but there are not yet two daughter cells.	(telophase)
18. 18. This image shows which phase of the cell cycle? Hint: Notice the two nuclei and the formation of the cell plate.	(cytokinesis)
19. 19. We learned about mitosis as well as two other types of cell division in this unit. Which is the kind of cell division that prokaryotes (organisms with no nucleus) do?	(binary fission)
20. 20. We learned about mitosis as well as two other types of cell division in this unit. Which is the kind of cell division that creates gametes (reproductive cells)?	(meiosis)
21. 21. Which type of cell division is shown below?	(mitosis)
22. 22. Which type of cell division is shown below? Hint: Notice that the four daughter cells that are formed look different from the original parent cell	(meiosis)
23. 23. Which type of cell division is shown below?	(binary fission)
24. 24. What are some reasons a cell might need to go through the cell cycle?	(Cells divide as part of their normal life cycle, but also go through it to repair damage, grow, develop, or replace old cells)
25. 25. True or false: You have the same number of cells in your body now as you did when you were a baby. The only thing that has happened is that the cells are much bigger now than they were when you were a baby.	(False! You have more cells now than you did as a baby. You are bigger now than you were as a baby because your cells have divided to make more cells. The cells themselves haven’t gotten bigger.)

 

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