5.2

Question 1

what are the two major components that make up a reaction

Answer 1

reactants –> products

Question 2

what happens when a chemical reaction occurs

Answer 2

energy is either released or absorbed

Question 3

what does exothermic mean

Answer 3

when energy is released from the molecules

Question 4

what does endothermic mean

Answer 4

when energy is absorbed into the molecules

Question 5

chemical reactions speed up by

Answer 5

lowering the activation energy

Question 6

what is an active site

Answer 6

area of an enzyme where reactants bind to enzyme

Question 7

what is the lock and key theory

Answer 7

only reactants/substrates can fit

Question 8

enzymes are specific to the reaction that they catalyze and are based on what

Answer 8

the shape of the reactant and active site

Question 9

enzymes can be reused after what

Answer 9

catalyzing a reaction and are not changed by the reaction

Question 10

what are enzymes named after (-ase, in)

Answer 10

the substrate/chemical reaction after its calayzed

Question 11

enzymes can help create a big molecule or

Answer 11

break down a big molecule

Question 12

substrates can only activate an enzyme once they

Answer 12

bind to the enzymes activation site

Question 13

what is activation energy

Answer 13

the amount of energy needed to start the reaction

Question 14

catalyst

Answer 14

a substance in general that makes something go faster

Question 15

enzyme

Answer 15

a catalyst that speeds up a reaction by lowering the activation energy

Question 16

hump of curve

Answer 16

activation energy

Question 17

if end of line is lower than start

Answer 17

exothermic

Question 18

if end of line is higher than start

Answer 18

endothermic

Question 19

what are the 3 things enzymes do

Answer 19

speed up reactions, lower activation energy, only works because of their unique shape

Question 20

enzymes can be affected by changes in

Answer 20

pH and temperature

Question 21

if the change is great enough

Answer 21

the enzyme can be destroyed

Question 22

denature/denaturing

Answer 22

the process of an enzyme/protein being destroyed, often
because the shape of the enzyme is changed because of a drastic change in temperature