IB Biology D3.3 Pub Quiz: Homeostasis

What it covers

IB Biology at SL, with HL cards when you switch the level: D3.3 Homeostasis.

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. True or false: the body uses positive feedback to bring its temperature back to normal.
2. After a sugary breakfast, which pancreatic hormone rises, and what does it make liver and muscle cells do?
3. Hours into a long hike with no food, blood glucose falls. Which hormone is released, and what does the liver do?
4. Why does blood glucose control need two hormones, insulin and glucagon, rather than just one?
5. Why do insulin injections work well for type 1 diabetes but often help less in type 2?
6. Why do regular exercise and a diet lower in sugar reduce the risk of type 2 diabetes?

Riddle me this

Course terms as riddles. Teams write what it is.

1. Beta cells release me after a meal, and I tell liver and muscle cells to take up glucose. What am I?
2. Alpha cells send me out when blood sugar drops, and I get the liver to break down its glycogen. What am I?
3. On a hot day I widen the arterioles in your skin so more blood can shed its heat. What am I?
4. I spot a change and push the other way, back towards the set point. What am I?
5. I'm the thermostat in your brain, comparing your temperature with its set point. What am I?

Quickfire

Short recall from the same topics.

1. Keeping the internal environment steady
2. Response that reverses a change
3. Response that amplifies a change