Enzymes

Question 0

Example of activation energy

Answer 0

Mount of energy required to muster up and push a snowball up a hill and down it

Question 1

Define activation energy

Answer 1

Energy required for a reaction to start

Question 2

Define enzymes

Answer 2

Proteins that lower the activation energy of a reaction

Question 3

How do enzymes lower the activation energy of a reaction

Answer 3

Enzymes increase the rate of a reaction helping it to occur faster

Question 4

What do enzymes not to do

Answer 4

They do not consume a reaction-
Simply help it to occur-
Not add snow to your snowball just make it easier to make a snowball

Question 5

What can enzymes do

Answer 5

Break molecules apart, build or add molecules, and even rearrange them

Question 6

What happens to the change and energy at the start and end of the chemical reaction

Answer 6

The change and energy remains the same between the start and end of a chemical reaction

Question 7

Define a substrate

Answer 7

Substance or molecule on which an enzyme functions

Question 8

How does increasing temperature affect the rate of reaction

Answer 8

Since enzyme catalyzes reactions by randomly colliding with substrate molecules, increasing temperature increases the rate of reaction, forming more product.

Question 9

What can occur when temperature also increases the vibrational energy

Answer 9

Puts a strain on the bonds that hold enzyme molecules together

Question 10

What will happen as a result of the strain

Answer 10

Are bonds, especially the week are hydrogen and ionic bonds will break. Breaking bonds with in the enzyme will cause the active site to change shape

Question 11

What will happen as a result to the active sites shaped change

Answer 11

The change in shape means that the active site is less complementary to the shape of the substrate, so that it is less likely to catalyze the reaction. Eventually the enzyme will become denatured and will no longer function
This will decrease the rate of reaction

Question 12

What is the enzymes optimum temperature

Answer 12

The temperature at which the maximum rate of reaction occurs

Question 13

How does pH acidity affect enzyme activity

Answer 13

Ions are charged and therefore interfere with hydrogen and ionic bonds that hold together and enzyme since they will be attracted or pulled by the charge is created by the bonds.

Question 14

What happens as a result of the ions interference

Answer 14

Causes a change in shape of an enzyme and importantly, it’s active site

Question 15

What happens if there’s any change in pH above or below the optimum

Answer 15

Quickly cause a decrease in the rate of reaction, since more of the enzyme molecules will have active sites who’s sheets are not complementary to the shape of their substrate

Question 16

How does concentration affect activity

Answer 16

Changing the enzyme and substrate concentration affect the rate of reaction of an enzyme catalyzed reaction

Question 17

Controlling these factors in a cell is one way that

Answer 17

An organism regulates is enzyme activity and so it’s metabolism

Question 18

As the concentration proceeds…

Answer 18

The rate of reaction will decrease since the substrate will get used up

Question 19

What is the initial reaction rate

Answer 19

Highest rate of reaction – maximum reaction rate for an enzyme in an experimental situation

Question 20

Why will increasing substrate concentration increases the rate of reaction?

Answer 20

More substrate molecules will be colliding with enzyme molecules so more products will be formed

Question 21

How does enzyme concentration affect enzyme activity

Answer 21

Increasing enzyme concentration will increase the rate of reaction has more enzymes will be colliding with substrate molecules