Biology Paper 1 2AND3 EXAM
COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY
GRADED A+
,Function of mouth - ✔✔ANSWER✔✔-Food is chewed
here. Enzymes begin to break it up
Function of salivary glands - ✔✔ANSWER✔✔-Produces
saliva that contains enzymes
Function of oesophagus - ✔✔ANSWER✔✔-tube that
connects the mouth to the stomach
Function of stomach - ✔✔ANSWER✔✔-Organ where food
is churned with digestive enzymes
Functions of liver - ✔✔ANSWER✔✔-Releases bile into the
small intestine where it digests fats
Functions of pancreas - ✔✔ANSWER✔✔-Digestive
enzyme production.
Hormones (insulin)
Functions of small intestine - ✔✔ANSWER✔✔-Small
digestive molecules are absorbed into bloodstream
functions of large intestine - ✔✔ANSWER✔✔-Water is
absorbed back into body leaving solid waste
Fuction of rectum - ✔✔ANSWER✔✔-Faeces are stored
here
,What are enzymes? - ✔✔ANSWER✔✔-Large protein
molecules made from folded coiled chains of amino acids
What do carbohydrase break down - ✔✔ANSWER✔✔-
breaks down carbohydrates into simple sugars
What do amylase break down - ✔✔ANSWER✔✔-starch
What do Protease break down - ✔✔ANSWER✔✔-breaks
down proteins into amino acids
What do lipases break down - ✔✔ANSWER✔✔-Fats/
lipids into fatty acids and glycerol
Carbohydrase site of production (3) - ✔✔ANSWER✔✔--
salivary glands
-pancreas
-small intestine
Protease site of production (3) - ✔✔ANSWER✔✔--
Stomach
-pancreas
-small intestine
Lipase site of production (1) - ✔✔ANSWER✔✔-pancreas
How do you test for starch? ( food tests) -
✔✔ANSWER✔✔-Iodine
, How do you test for protein? ( food tests) -
✔✔ANSWER✔✔-Biuret test
How do you test for lipids?( food tests) - ✔✔ANSWER✔✔-
Sudan III
How to test for sugars? ( food tests) - ✔✔ANSWER✔✔-
Benedict's
Whats the positive and negative result for starch? -
✔✔ANSWER✔✔-P-blue/black
N- orange/ brown
Whats the positive and negative result for protein? -
✔✔ANSWER✔✔-P- purple/lilac
N- blue
Whats the positive and negative result for lipids? -
✔✔ANSWER✔✔-P-red layer floating
N- whole solution is pink/ red
Whats the positive and negative result for sugars? -
✔✔ANSWER✔✔-P- red, orange, yellow, green ( most to
least)
N- blue
What is chemical digestion? - ✔✔ANSWER✔✔-Acids and
enzymes break it down
COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY
GRADED A+
,Function of mouth - ✔✔ANSWER✔✔-Food is chewed
here. Enzymes begin to break it up
Function of salivary glands - ✔✔ANSWER✔✔-Produces
saliva that contains enzymes
Function of oesophagus - ✔✔ANSWER✔✔-tube that
connects the mouth to the stomach
Function of stomach - ✔✔ANSWER✔✔-Organ where food
is churned with digestive enzymes
Functions of liver - ✔✔ANSWER✔✔-Releases bile into the
small intestine where it digests fats
Functions of pancreas - ✔✔ANSWER✔✔-Digestive
enzyme production.
Hormones (insulin)
Functions of small intestine - ✔✔ANSWER✔✔-Small
digestive molecules are absorbed into bloodstream
functions of large intestine - ✔✔ANSWER✔✔-Water is
absorbed back into body leaving solid waste
Fuction of rectum - ✔✔ANSWER✔✔-Faeces are stored
here
,What are enzymes? - ✔✔ANSWER✔✔-Large protein
molecules made from folded coiled chains of amino acids
What do carbohydrase break down - ✔✔ANSWER✔✔-
breaks down carbohydrates into simple sugars
What do amylase break down - ✔✔ANSWER✔✔-starch
What do Protease break down - ✔✔ANSWER✔✔-breaks
down proteins into amino acids
What do lipases break down - ✔✔ANSWER✔✔-Fats/
lipids into fatty acids and glycerol
Carbohydrase site of production (3) - ✔✔ANSWER✔✔--
salivary glands
-pancreas
-small intestine
Protease site of production (3) - ✔✔ANSWER✔✔--
Stomach
-pancreas
-small intestine
Lipase site of production (1) - ✔✔ANSWER✔✔-pancreas
How do you test for starch? ( food tests) -
✔✔ANSWER✔✔-Iodine
, How do you test for protein? ( food tests) -
✔✔ANSWER✔✔-Biuret test
How do you test for lipids?( food tests) - ✔✔ANSWER✔✔-
Sudan III
How to test for sugars? ( food tests) - ✔✔ANSWER✔✔-
Benedict's
Whats the positive and negative result for starch? -
✔✔ANSWER✔✔-P-blue/black
N- orange/ brown
Whats the positive and negative result for protein? -
✔✔ANSWER✔✔-P- purple/lilac
N- blue
Whats the positive and negative result for lipids? -
✔✔ANSWER✔✔-P-red layer floating
N- whole solution is pink/ red
Whats the positive and negative result for sugars? -
✔✔ANSWER✔✔-P- red, orange, yellow, green ( most to
least)
N- blue
What is chemical digestion? - ✔✔ANSWER✔✔-Acids and
enzymes break it down
