chapter 6 unit 1

Question 1

Metabolism

Answer 1

the collection of chemical reactions that occur in an organism.

Question 2

catabolic

Answer 2

breaking down molecules , releasing energy

Question 3

anabolic

Answer 3

building molecules , consuming energy

Question 4

heat

Answer 4

thermal energy in transfer from one object to another

Question 5

Exergonic (spontaneous)

Answer 5

products have less free energy than the reactant (-delta G)

represents the amount of work a reaction can perform
- reactants use more energy

Question 6

Endergonic (non spontaneous)

Answer 6

requires an action or input of energy ( + delta G)
products use more energy than reactants
absorbs free energy from surroundings

Question 7

activation energy

Answer 7

the energy necessary to break the bonds of the reactants

Question 8

In a graph , enzymes are found at the …

Answer 8

lower barrier

Question 9

Each enzyme has an

Answer 9

optimal temperature and pH

Question 10

Inhibitors

Answer 10

reduce enzyme function

Question 11

competitive inhibitor

Answer 11

binds to the active site

Question 12

noncompetitive inhibitor

Answer 12

binds to a different site on an enzyme

Question 13

spontaneous vs non spontaneous reaction

Answer 13

spontaneous reaction happens in a given set of conditions without any interruptions.

non spontaneous reaction takes place with the help of external agents like heat or energy

think energetically favorable vs unfavorable

Question 14

energy coupling

Answer 14

the use of an exergonic process to drive an endergonic one
- ATP is responsible for mediating most energy coupling in cells