Bioenergetics

Question 1

The transfer and utilization of energy in biological systems. (Initial vs final energy status)

Answer 1

Bioenergetics

Question 2

……. is the change of free energy.

Answer 2

Delta G

Question 3

∆G = G of …… – G of …….

Answer 3

products , reactants

Question 4

Negative delta G means product has …… energy than reactants and vice versa

Answer 4

lower

Question 5

Delta G is related directly to …….

Answer 5

enthalpy

Question 6

∆H:

Answer 6

change in heat content

Question 7

∆S: change of randomness
of reactants and products

Answer 7

entropy

Question 8

{∆G=

Answer 8

delta h - delta s

Question 9

When the reaction is spontaneous (random), ∆G is …….

Answer 9

negative

Question 10

(exergonic: gives ….. energy)

Answer 10

off

Question 11

When the reaction is not spontaneous, ∆G is …….

Answer 11

positive

Question 12

(endergonic: …… energy)

Answer 12

absorbs

Question 13

When the energy produced by one reaction is used by another reaction

Answer 13

Energy coupling:

Question 14

Biological catalysts that are almost always ……

Answer 14

proteins

Question 15

Enzymes …… up the rate of a reaction by ….. the free activation
energy

Answer 15

speed up, reducing

Question 16

Enzymes are not ……. in a reaction

Answer 16

consumed

Question 17

Enzymes do not change the ….. of either reactant nor products

Answer 17

energy

Question 18

Enzymes have …… sites in which a specific substrate with a specific shape (fits in the active site) bind

Answer 18

active