Biology  by Bradford
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IB Biology A2.2 Pub Quiz: Cell structure

A2.2 as a pub quiz for your class: review rounds on this subtopic, mixed with pure-fun rounds so it feels like a night out and not another test. Opens at SL; switch to HL in the builder to add the higher level cards.

Print teacher pagesPrint student pagesOpen in the builder to change it

Teacher pages are the quizmaster script and tally sheet. Student pages are the team answer sheet, handout and picture sheet. Both open ready to print, on A4 or US Letter.

What it covers

IB Biology at SL, with HL cards when you switch the level: A2.2 Cell structure.

The running order

nine rounds and a handout of riddles. Review rounds are drawn from this topic each time you open the quiz, so two classes never get the same paper, and every review round can be redrawn in a click.

  1. Riddle me this review
    Course terms as riddles: "I have a head that loves water and two tails that hate it…" Teams write what it is.
  2. Close-up fun
    A tiny zoomed-in patch. What's the full picture?
  3. Fact or fiction fun
    Myths and true-but-weird facts. Teams write Fact or Fiction.
  4. Think it through review
    Scenarios, odd ones out, true or false and why, puzzles: questions to reason through. Give teams a little longer.
  5. Films in science-speak fun
    A film plot, described like a research abstract. Name the film.
  6. Who am I? Scientists fun
    Three clues, hardest first. 3 points after clue 1, 2 after clue 2, 1 after clue 3.
  7. Missing vowels: course terms review
    Your key terms with the vowels taken out.
  8. Funny animal noises fun
    YouTube clips of animals making ridiculous noises. Screen off, listen, guess, then watch the reveal.
  9. Closest wins fun
    Estimation questions. Nearest team wins the point. Doubles as the tiebreaker.

A taste of the questions

Think it through

Scenarios, odd ones out and true or false and why, from IB Biology.

  1. A new organism is found at a deep-sea vent. Before anyone puts it under a microscope, what does cell theory let you predict about it?
  2. A cell is 20 µm across. How wide should it be in a drawing at ×500 magnification?
  3. True or false: with a strong enough lens, a light microscope could show you a ribosome. Explain.
  4. An electron microscope shows far finer detail than a light microscope. Why can't you use one to watch a living cell divide?
  5. To find where one particular protein sits in a cell, biologists use antibodies carrying a fluorescent dye. Why antibodies?
  6. I flash-freeze my samples in thin ice instead of drying and staining them, so proteins keep their natural shape. What am I?
Answers
  1. It is made of one or more cells (cell theory says every organism is built from cells, so this one must be too)
  2. 10 mm (20 µm × 500 = 10 000 µm = 1 cm)
  3. False (its resolution is limited to about 200 nm, and a ribosome is only about 25 nm across)
  4. Specimens must be dead (they are fixed or frozen and held in a vacuum)
  5. They bind only that protein (so only it glows under the microscope)
  6. Cryogenic electron microscopy (samples are frozen, not dried, so molecules look as they do in life)

Riddle me this

Course terms as riddles. Teams write what it is.

  1. I'm too small for the light microscope, I come in 70S and 80S sizes, and I build proteins. What am I?
  2. I have a folded inner membrane and I release energy by aerobic respiration. A sperm crams me into its midpiece. What am I?
  3. I'm a stack of flattened sacs. Proteins arrive from the rough ER, I modify them and post them out in vesicles. What am I?
  4. I'm the part of a bacterium where its naked loop of DNA gathers, with no membrane round me at all. What am I?
  5. I'm image size divided by actual size. Draw a cell 100 times bigger than life and I'm ×100. What am I?
Answers
  1. Ribosome
  2. Mitochondrion
  3. Golgi apparatus
  4. Nucleoid
  5. Magnification

Quickfire

Short recall from the same topics.

  1. Image size divided by actual size
  2. Line showing a real length on an image
  3. Ability to tell two close points apart
Answers
  1. Magnification
  2. Scale bar
  3. Resolution

How it runs

  1. Open it in the builder. The running order loads ready to go. Swap, add or drop rounds, or draw a round's questions again.
  2. Present it or print it. Present puts each round on the projector in 16:9 with quizmaster notes. Print gives the script, team answer sheets, a picture sheet and a tally sheet on A4 or US Letter, with no projector needed.
  3. Score it. Teams swap sheets, mark, and each plays one joker to double a round. The scores page reveals the leaderboard from last place up.

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