Sammy K Scribe 10/6/11

The first thing we did today in class was the Cell Quiz.

What we learned today in Class:

• Catalysts: A substance that speeds up a Chemical Reaction (H2O2 w/ Catalase)
• Catalysts decrease the amounts of energy needed to start the chemical reaction and it does not get used during the reaction.
• Enzyme: They are different than acatalysts because it takes place in living organisms.
• And enzymes are affected by changes in pH, Temperature, and substrate concentration.

After we had leaned about Enzymes and Catalysts we started to work on our lab.

Lab:

On our lab we put 2 elodea leaves on opposite ends of the slide and put 2 to 3 drops of tap water on one side and 2 to 3 drops of 6% salt water on the other.

When we put the slides under the microscope we had to observe where the cell wall, cell membrane, and chloroplasts were on both elodea leaves.

HOMEWORK:

PLASYMOLYSIS LAB

FINISH UP 36-37 (Page 211 to Help!)

next scribe:

(I don't know where the list is for the people who hadn't been scribe yet)