Question

Seems like a lot, but you're help is appreciated:

Discuss each of the following:
a. The structure of an enzyme.
b. The purpose of enzymes and how enzymes function.
c. How enzymes are effected by temperature, pH & concentration.
d. Discuss the enzyme-catalyzed reaction in the AP Lab (Reference to catalysis of Hydrogen Peroxide with Catalase).

Thanks :)

Answer 1

You are going to have to do a lot of reading. Try this site:
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/E/Enzymes.html. This is an important topic and you will get tested on this again and again. I suggest you read a little, and then comeback with questions on things you do not understand.

Answer 2

I appreciate the thought, however. broken link :3

Answer 3

Ok, Ill look for another one.
Gimme a minute. What is your textbook?

Answer 4

Cambell Biology ninth edition Ap edition

Answer 5

Which chapter?

Answer 6

I am trying to find it for you on this site. http://www.course-notes.org/Biology/Outlines

Answer 7

http://www.course-notes.org/biology/topic_notes/08_energy_and_metabolism/enzymes

Answer 8

chapter 8 is about enzymes

Answer 9

So enzymes speed up the reaction by lowering energy barriers.

Answer 10

he purpose of enzymes and how enzymes function.: Many reactions occur so slowly because they have a high energy of activation. Enzymes lower that energy barrier and allow the reaction to occur.

Answer 11

Enzymes are very specific in their role an in the substrates (compounds) they work with. Its like a lock fits only one key.

Answer 12

pH: Each enzyme works best at certain optimal conditions, which favor the most active conformation for the enzyme molecule.

Answer 13

Temp: As temp increases, the effectiveness of the enzyme increases a little, because the reactants and products move and have higher energy. Then if the temp incs more, the enzyme will fall apart because it is a protein itself.

Answer 14

Hope that helps.

Answer 15

Enzymes speed up both the forward and reverse reactions equally, but they do not change the equilibrium between reactants and products. This means that introducing enzymes into a chemical reaction will reduce the time it takes for the reaction to reach equilibrium BUT the enzyme does not necessarily push the reaction in one direction or the other. The equilibrium is determined by the thermodynamic energy states of reactants and products. The transition state energies when converting from reactants to products (or reverse) are what determine the speed of the reaction. Enzymes reduce these transition state energy barriers.

Answer 16

Thats very good dspieg. You are right on. Go read your book HazeEzah. This is important stuff.

Answer 17

Thanks a lot Guys!