enzyme

Question 1

what are enzymes

Answer 1

enzymes are protein

that speed up chemical reactions while remaining chemically unchanged at the end of the reaction

Question 2

what is activation energy

Answer 2

is the energy needed to start a chemical reaction

Question 3

what is enzyme catalase

Answer 3

is to speed up chemical reaction

Question 4

what are lock and key

Answer 4

lock - enzyme

key - substrate

Question 5

where is the active site located at

Answer 5

enzyme

Question 6

how is an enzyme-substrate complex formed

Answer 6

only the substrate with a shape complementary can fit into the enzyme

Question 7

what happens to the activation energy when an enzyme-substrate complex is formed

Answer 7

it is lowered so that reaction takes place to convert substrate into products

Question 8

why is the enzyme remain chemically unchanged at the end of the reaction

Answer 8

so that enzymes can be reused. hence enzymes are required in a small amount

Question 9

describe the action of reaction by using lock-and-key hypothesis

Answer 9

(state the enzyme) is lock and
(state the substrate) is key
the enzyme has an active site that complements the shape of the substrate
substrate fits into the active site
when the (substrate) and (enzyme) comes tgt, they form an enzyme-substrate complex
thus reaction occurs
(substrate) is broken down into (products)
the unchanged enzyme can be reused

Question 10

what temp where enzyme is completely denatured

Answer 10

more than 40 degrees Celcius

Question 11

what does it mean to be denatured

Answer 11

means that it cannot work anymore

Question 12

at low temperatures, enzymes are…

Answer 12

inactive