1. The substrate in this reaction is the
{liver or hydrogen peroxide) (highlight one)
2. The enzyme present in the liver is called
{hydrogen peroxide or catalase) (highlight one)
3. With enzymes present in the liver, hydrogen peroxide quickly
breaks down into
and
4. In the third test tube she places a used up liver and adds
hydrogen peroxide. What was she showing us?
5. When she placed a piece of boiled liver in the test tube and
added 2 mL of hydrogen peroxide, why were there no bubbles?
6. In her last test tube, she places a piece of the liver that was
treated with ammonia -- which is a basic solution. Then she added
the hydrogen peroxide into the same test tube. There were no
bubbles? What idea was she showing in these last two steps?