Food and nutrients and Digestion

Question 1

Carbohydrates

Answer 1

supply energy

Question 2

test for starch

Answer 2

iodine solution ( turns blue or black)

Question 3

protein

Answer 3

growth and repair

Question 4

test for protein

Answer 4

biuret test

Question 5

Fats

Answer 5

give extra energy and help insulate bodies

Question 6

test for fats

Answer 6

leave a greasy mark on paper

Question 7

vitamins and minerals

Answer 7

strong healthy bones and better overall health

Question 8

fibre

Answer 8

push food through the digestive system

Question 9

enzymes

Answer 9

Enzymes break down insoluble large food molecules into smaller soluble ones

Question 10

What is the enzyme that is found in the mouth?

Answer 10

Amylase

Question 11

Why do some people have lactose intolerance?

Answer 11

when your small intestine does not make enough of a digestive enzyme called lactase.

Question 12

What is chemical digestion

Answer 12

when enzymes break down large food molecules into smaller ones that can be absorbed by the blood

Question 13

What is diffusion

Answer 13

movement of particles from an area with more particles to an area with fewer particles

Question 14

What are villi?

Answer 14

small finger like projections covering the eternal surface of the small intestines

Question 15

Function of villi

Answer 15

they increase the surface area and help absorb nutrients

Question 16

how thick is the surface of villus?

Answer 16

they are 1 cell thick to speed up the absorption process

Question 17

Small intestines

Answer 17

digestive organ where most chemical digestion and absorption of food takes place

Question 18

Primary function of the small intestines

Answer 18

absorption of nutrients