How to work with Homeostasis: Part 3

There are many amazing facts about water.

Did you know for example that:

Goldfish remember things better in cold water than in warm water
There are more atoms in a teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
Nearly 96% of the world’s water is too salty to drink, and another 2% is trapped in ice caps.
Humans can live for 1 month without any food, but only a week without water.

GCSE scientists – if you are studying GCSE science or A’Level Biology, you need to know all about osmo-regulation, how our body maintains the same levels of water. To help you understand osmo-regulation, check out Part 3 of our “How to” revision guide on Homeostasis.

It explains:

• Why we need to maintain the levels of water in our blood
• How our body can detect changes in water levels
• How our body responds to either an increase or decrease in water levels
• What happens when our body cannot manage water levels effectively anymore
• How kidney disease can be managed

This guide will help if you are studying for GCSEs, and is also suitable for A Level students, as sections of the guide go “beyond GCSE”. It includes some example GCSE and A Level questions with answers at the end, so you can check your understanding of osmo-regulation.

Click on the picture below to view our guide.