bioenergetics

Question 1

entropy symbol and definition

Answer 1

S, randomness

Question 2

positive entropy means what

Answer 2

+S= favorable- increase in disorder

Question 3

enthalpy symbol and definition

Answer 3

H bond energy

Question 4

exothermic reaction delta H is what

Answer 4

negative

Question 5

endothermic reaction delta H is what

Answer 5

positive

Question 6

change in gibbs free energy is what

Answer 6

maximum work that a proess can perform at constant pressure and temp

Question 7

negative delta G means

Answer 7

thermodynamically favorable and spontaneous

Question 8

positive delta G means

Answer 8

thermodynamically unfavorable and not spontaneous

Question 9

definition of high energy compound

Answer 9

releases more than 7 kcal/mol

Question 10

2 classes of high energy bonds

Answer 10

thioester and high energy phosphate

Question 11

example of thirster bond

Answer 11

C-s: acetyl CoA

Question 12

3 examples of phosphate bonds

Answer 12

phosphoanhydride (pop like tap), phosphocreatine (PN), and phosphoenolpyruvate (COP

Question 13

more positive the value of E means what

Answer 13

likes to attract electrons

Question 14

the more negative the value of e means

Answer 14

likes to give up electrons

Question 15

free energy of redox is directly related to _____________

Answer 15

the difference in reduction potential between products and reactants

Question 16

electrons pass from compounds with ____ to _____ E and free energy is _____

Answer 16

low to high, free energy is released

Question 17

first law of thermo

Answer 17

energy is neither created nor destroyed

Question 18

second law of thermo

Answer 18

entropy of the universe is always increasing

Question 19

cutting the beta bond of ATP results in what two products

Answer 19

AMP and pyrophosphate

Question 20

positive delta G means reaction will move:

Answer 20

backwards

Question 21

negative delta G means reaction will more:

Answer 21

forwards

Question 22

when deltaG<0, the reaction is

Answer 22

spontaneous

Question 23

the deltaG>0 the reaction is

Answer 23

not spontaneous

Question 24

when deltaG=0,

Answer 24

the system is at equilibrium

Question 25

ideal state of H and S

Answer 25

-H and +S

Question 26

Kep>1 reaction moves

Answer 26

forward

Question 27

Keq<1

Answer 27

reaction moves backwards

Question 28

nucleotide=

Answer 28

base sugar and phosphate group

Question 29

nucleoside=

Answer 29

base and sugar