chapter 6

Question 1

totality of an organisms chemical reactions, an emergent property of life that arises from interactions between molecules within the cell

Answer 1

metabolism

Question 2

releases energy that can perform work

Answer 2

exergonic reactions

Question 3

which is spontaneous and which is non spontaneous

Answer 3

exergonic- spontaneous

endergonic- nonspontaneous

Question 4

exergonic positive or negative?

Answer 4

negative

Question 5

endergonic positive or negative

Answer 5

positive

Question 6

catabolism

Answer 6

exergonic

Question 7

anabolism

Answer 7

endergonic

Question 8

what are the 3 main kinds of work that a cell does

Answer 8

chemical
transport
mechanical

Question 9

In which cell work is overall G negative and reactions are spontaneous

Answer 9

chemical work

Question 10

ATP phosphorylates transport proteins

Answer 10

transport work

Question 11

ATP binds noncovalently to motor proteins and then is hydrolyzed

Answer 11

mechanical work

Question 12

catalyst

Answer 12

a chemical agent that speeds up rxns w/o being consumed by the rxn

Question 13

the initial energy needed to start a chemical rxn

- often supplied in the form of heat

Answer 13

free energy of activation or activation energy

Question 14

which has lower free-energy content?

products or reactants

Answer 14

products

Question 15

ENZYMES DO NOT AFFECT THE CHANGE IN FREE ENERGY

Answer 15

the gag is they hasten rxns that would occur eventually

Question 16

active site

Answer 16

region in the enzyme where the substrate binds

Question 17

relationship btwn catabolic and anabolic pathways

Answer 17

anabolic pathways synthesize more complex organic molecules using the energy derived from catabolic pathways

Question 18

requires an input of energy from catabolic pathways

Answer 18

anabolic pathways

Question 19

most abundant form of energy in a cell

Answer 19

chemical energy