Lecture 2

Question 0

Oxidation reactions have __________ energy than reduction reactions.

Answer 0

Less

Question 1

Going from ATP to ADP is an __________ reaction.

Answer 1

Exergonic

Question 2

__________ is the energy required to initiate a chemical reaction.

Answer 2

Activation Energy

Question 3

The __________ of an exergonic reaction depends on the activation energy required.

Answer 3

Rate

Question 4

Rate can be increased in two ways:

Answer 4

Increasing energy if reacting molecules (heating)

Lowering activation energy

Question 5

On a graph, activation energy is represented as a __________.

Answer 5

Peak

Question 6

A __________ lowers activation energy.

Answer 6

Catalyst

Question 7

True or false. A catalyst cannot make an endergonic reaction spontaneous.

Answer 7

True

Question 8

True or false? Catalysts do not alter the ratio of reactants to products.

Answer 8

True

Question 9

__________ are catalysts.

Answer 9

Enzymes

Question 10

Most enzymes are __________.

Answer 10

Proteins

Question 11

Enzymes stabilize association between __________.

Answer 11

Substrates

Question 12

True or false? Enzymes are changed or consumed in reactions.

Answer 12

False

Question 13

An __________ is a pocket or cleft used for substrate binding.

Answer 13

Active site

Question 14

Active sites stress and distort particular bonds to __________ activation energy.

Answer 14

Reduce

Question 15

The reaction rate of an enzyme depends on the __________ and __________.

Answer 15

Substrate

Functional Enzyme

Question 16

Enzymes can be actively __________.

Answer 16

Inhibited

Question 17

A __________ inhibitor competes with substrate for active site.

Answer 17

Competitive

Question 18

A non competitive inhibitor is __________.

Answer 18

Allosteric

Question 19

A __________ is all the chemical reactions in an organism.

Answer 19

Metabolism

Question 20

__________ reactions use energy to make larger molecules.

Answer 20

Anabolic

Question 21

__________ reactions harvest energy by breaking down molecules.

Answer 21

Catabolic

Question 22

Reactions occur in a __________.

Answer 22

Sequence

Question 23

The product for one reactions is the __________ for the next reaction.

Answer 23

Reactant (substrate)

Question 24

In feedback inhibition, the end-product __________ to enzyme earlier in pathway.

Answer 24

Binds