Lab 7: Chemical Reactions and Enzymes

Fuzzy Mg and HCl

NaCl and AgNO3

Another result with salt solution and silver nitrate.

Copper sulfate with ammonia. Look closely at the top of the tube.

What is this? Why is it used?

Two starch test results. What do these results indicate?
What is the indicator solution?

Sugar test results. Positive or negative?
Which indicator solution was used?

Which enzyme was used? What role does the enzyme play?

Why keep these on ice?

A fuzzy view of tubes E, F, and G.
I'm still working on learning how to use the camera!

How does pH affect enzyme activity?

Cofactors demo at the beginning.

Cofactors demo after sitting for a few minutes.

Banana peeled back to the knife point.

A few minutes later, the banana was peeled back again, to the knife point.

Same banana later.
Spatula at first peel point, knife point at second peel point. Note the difference in darkness with time and disturbance.

Be able to describe the chemistry of this reaction.

What function does this reaction serve in a banana?

Last updated by Steve Muzos September 30, 2002