1.2 Digestion

Question 0

Maltose

Answer 0

Maltase, glucose

Question 1

Starch

Answer 1

Amylase, maltose

Question 2

Proteins

Answer 2

Protease, amino acids

Question 3

Lipids

Answer 3

Lipase, fatty acids and glycerol

Question 4

Sucrose

Answer 4

Sucrase, glucose and fructose

Question 5

Lactose

Answer 5

Lactase, glucose and galactose

Question 6

Physical digestion

Answer 6

Teeth and stomach, to increase surface area of food for faster enzyme digestion

Question 7

Chemical digestion

Answer 7

Large molecules becoming smaller and soluble by hydrolysis

Question 8

Pancreatic juice enzymes secreted into small intestine

Answer 8

Lipase amylase protease

Question 9

Glucose formula

Answer 9

C6H12O6

Question 10

Benedict’s test

Answer 10

Equal amount of Benedict’s and sample, heat in water bath, orange/brown means reducing sugar present

Question 11

Glycosidic bond

Answer 11

Condensation reaction to join monosaccharides

Question 12

Non reducing sugar test

Answer 12

Add HCl, heat, add sodium hydrogencarbonate, test with pH paper to make sure it’s alkaline, Benedict’s test

Question 13

Starch test

Answer 13

Add iodine, blue/black means starch present

Question 14

Peptide bonds

Answer 14

Condensation reaction to join together amino acids

Question 15

Primary structure

Answer 15

Amino acid sequence

Question 16

Secondary structure

Answer 16

Hydrogen bonds form to make aplha helix or beta pleated sheet structures

Question 17

Tertiary structure

Answer 17

3D, disulfide and ionic bonds formed

Question 18

Quaternary structure

Answer 18

Many polypeptide chains

Question 19

Ionic bonds

Answer 19

Easily broken by pH changes

Question 20

Enzymes

Answer 20

Biological catalysts, lower activation energy by having an active site that molecules can bind to

Question 21

Induced fit model

Answer 21

Enzymes are flexible, mould to molecules, strain distorts bonds and lowers activation energy

Question 22

pH, temperature, concentration of substrate

Answer 22

Charge altered and complex can’t formed, increased energy, all full active sites

Question 23

Denaturing

Answer 23

Permentantky altered active site

Question 24

Competitive inhibitors

Answer 24

Similar shape to substrate, slows down reaction, affected by concentrations

Question 25

Non competitive inhibitors

Answer 25

Fit in different site, alter enzyme shape, substrate concentration does not affect rate

Question 26

Protein test

Answer 26

Add sodium hydroxide, copper sulphide, purple = protein