BIOLOGICAL MOLECULES AND FOOD TESTS

Question 1

WHAT ARE BIOLOGICAL MOLECULES

Answer 1

CARBOHYDRATES, LIPIDS AND PROTEIN (THEY ARE GENERALLY, LONG, COMPLEX MOLECULES MADE UP FROM SMALLER BASIC UNITS)

Question 2

CARBOHYDRATES CHARACTERISTICS

Answer 2

CARBOHYDRATES MOLECULES CONTAIN THE ELEMENTSS- CARBON, HYDROGEN AND OXYGEN

STARCH AND GLUCOGEN ARE LARGE, COMPLEX CARBOHYDRATES WHICHG ARE MADE UP OF MANY SMALLER UNITS JOINED TOGETHER IN A LONG CHAIN

Question 3

CHARACTERISTICS OF PROTEINS

Answer 3

PROTEINS ARE MADE UP OF LONG CHAINS OF AMINO ACIDS
THEY ALL CONTAIN CARBON, NITROGEN, HYDROGEN AND OXYGEN ATOMS

Question 4

CHARACTERISTICS OF LIPIDS

Answer 4

LIPIDS (FATS AND OILS)N ARE BUILT FROM FATTY ACIDS AND GLYCEROL
LIPIDS CONTAIN CARBON, HYDROGEN AND OXYGEN ATOMS

Question 5

WHAT ARE THE STEPS TO CARRY OUT A FOOD SAMPLE

Answer 5

1) GET A PIECE OF FOOD AND BREAK IT UP USING A PESTLE MORTAR
2) TRANSFER THE GROUND UP FOOD TO A BEAKER AND ADD SOME DISTILLED WATER
3) GIVE THE MIXTURE A GOOD STIR WITH A GLASS ROD TO DISSOLVE SOME OF THE FOOD
4) FILTER THE SOLUTION USING A FUNNEL LINED WITH FILTER PAPER TO GET RID OF THE SOLID BITS OF FOOD