This message is for year 11. It’s late in the game. Make sure you don’t fluff it!

Fifteen multiple choice questions. Try here. And an extra ten here.

Lesson notes  from today.

Today we looked at digestive enzymes. These are chemicals that help break down large insoluble food molecules into smaller soluble molecules. We saw that enzymes are affected by pH.

What is the pH in your mouth and why is chewing sugar free gum good for you?

Not sure? have a look here

 lesson notes Read the rest of this entry »

This is an airlock used in home brewing. What does it do and why is it needed?

You should have filled in this sheet and answered the questions from pages 84 and 85 in the text book.

An important part of your knowledge is that you understand the effect of temperature on enzymes. We will be doing a practical on this tomorrow, but have a look at this link.

Talking about digestive enzymes, we also had a discussion about why chewing gum can be both good and bad for you. Have a look at my year 8 post today, and you might also be interested in Pavlov’s dog - a nice looking site which also has a game you can play to teach a dog to salivate at your command!