biological molecules B3

Question 1

carbs

Answer 1

made from carbon hydrogen and oxygen

Question 2

small carbs

Answer 2

simple sugars - glucose and fructose
- known as ‘monomers’
monomers join to form carb polymers like glycogen and starch

Question 3

complex carbs

Answer 3

chemical bonds between monomers
if bonds r broken, complex carb can be broken into simple carbs
(eg, starch to glucose molecules)

Question 4

breakdown of complex -> simple

Answer 4

carried out by enzymes in mouth and small intestine

Question 5

proteins

Answer 5

long chains of amino acids
protein= polymer
amino acid= monomer

Question 6

amino acids

Answer 6

carbon , hydrogen, oxygen and nitrogen

Question 7

protein breakdown

Answer 7

enzymes in stomach and small intestine

Question 8

lipids

Answer 8

refers to fats and oils
contain a single glycerol molecule attached to three fatty acid molecules
made of carbon hydrogen and oxygen

Question 9

fatty acid molecules in lipids

Answer 9

often differ in length
length and structure determine whether the lipid is a fat or oil

Question 10

construction of lipids

Answer 10

are NOT POLYMERS
not formed of long chains of monomers
unlike carbs and proteins

Question 11

location of lipid breakdown

Answer 11

enzymes in small intestine