enzymes

Question 1

explain metabolism

Answer 1

all the chemical reactions that take place in an organism

Question 2

what is the role of enzymes in metabolic reactions

Answer 2

alter rate of reaction

Question 3

name the organelle in which proteins are produced

Answer 3

ribosomes

Question 4

to which part of an enzyme does the substrate attach

Answer 4

active site

Question 5

explain the active site ensures enzyme specificity

Answer 5

only one substrate fits the shape of the active site

Question 6

explain denatured

Answer 6

active site destroyed or loss of shape or loss of function

Question 7

name the factor you altered during your practical work

Answer 7

heat

Question 8

what is an immoblisied enzyme

Answer 8

an ezyme that is attached to another enzyme or attached to a non reactive substance / inert gel

Question 9

state one advantage of using immobilised enzymes

Answer 9

reusable / cheap / pure product

Question 10

identity one application of the use of immobilised enzymes

Answer 10

lactose free milk / corn starch or syrup

Question 11

what is an enzyme

Answer 11

a cataylst made of protein

Question 12

describe the active site theory of enzyme action

Answer 12

active site changes to accomodate substrate, product is formed and active site referts back to orignal shape

Question 13

describe what happens to an enzyme if it is overheated

Answer 13

loses shape or loses functon

Question 14

give an example of a catabolic enzyme

Answer 14

amylase

Question 15

give an example of a catabolic enzyme

Answer 15

amylase breaks starch into maltose

Question 16

give 2 factors that have an effect on enzyme activity

Answer 16

temperature, pH

Question 17

what are 2 advantages of using immobilised enzymes

Answer 17

large scale production is easier, cheaper and faster, the enzymes are more stable and can be reused

Question 18

give an example of when immobilised enzymes are used

Answer 18

glucose is mode from the substrate sucrose using the enzyme sucrase.

Question 19

name the ingredients necessary used to make immobilised enzymes

Answer 19

sucrase (in yeast), sodium alginate, calcium chloride,