Digestion & Food

Question 1

What is the order in which food travels around the body?

Answer 1

Mouth, œsophagus, stomach, small intestine, large intestine (and liver for lipids)

Question 2

What enzyme breaks down carbohydrates?

Answer 2

carbohydrase (amalyze)

Question 3

What enzyme breaks down proteins?

Answer 3

Protease (pepsin)

Question 4

What enzyme breaks down lipids?

Answer 4

Lipase

Question 5

What is the product of carbohydrates?

Answer 5

Maltose

Question 6

What are the products of lipids?

Answer 6

Fatty acids and glycerol

Question 7

What are the products of proteins?

Answer 7

Amino acids

Question 8

Where is bile created and stored?

Answer 8

It is created in the Liver and stored in the gallbladder

Question 9

What two organs can create lipase, protease and carbohydrase?

Answer 9

The pancreas and small intestine

Question 10

What is it called when an enzyme and a substrate connect?

Answer 10

An enzyme-substrate complex

Question 11

Where are carbohydrates digested?

Answer 11

In the mouth and then the small intestine

Question 12

Where are lipids digested?

Answer 12

In small intestine and then the liver

Question 13

Where are proteins digested?

Answer 13

In the stomach and then this small intestine

Question 14

What does the epithelial tissue do?

Answer 14

It helps protect organs from injury

Question 15

Put these into the correct size order

Organism
Cell
Tissue
Organ system
Organ

Answer 15

Cell, Tissue, Organ, Organ System, Organism

Question 16

What is the active site?

Answer 16

The site on the enzyme that the substrate goes onto

Question 17

What is an enzyme and what is it made of?

Answer 17

A biological catalyst.
Protein/amino acid

Question 18

Where is protein made in a cell?

Answer 18

Ribosome

Question 19

What is it called when an enzyme loses its active site shape?

Answer 19

To Denature

Question 20

When an enzyme denatures, what will it not be able to do?

Answer 20

The substrate won’t fit meaning the enzyme will not be able to break down foods

Question 21

What two factors cause an enzyme to denature?

Answer 21

pH and temperature

Question 22

What does bile do?

Answer 22

It neutralises the HCl and emulsifies the lipids (makes the molecules smaller so easier to break down)

Question 23

Why is it good to have a varied diet?

Answer 23

So that you don’t get obese, get anorexia or get ill

Question 24

What do we use to test for protein?

Answer 24

Biuret solution

Question 25

What do we use to test for starch?

Answer 25

Iodine solution

Question 26

What enzyme is created in the salivary glands?

Answer 26

Amylase

Question 27

What do we use to test for sugar?

Answer 27

Benedict’s solution

Question 28

What is it called when the substrate locks onto the enzyme to break apart or to make bonds?

Answer 28

Lock and key theory

Question 29

What colour will biuret turn for a positive result for protein?

Answer 29

Purple

Question 30

What colour will Benidict’s turn for a positive result for sugar?

Answer 30

Brick red

Question 31

What colour will iodine turn for a positive result for starch?

Answer 31

black

Question 32

What colour will biuret turn for a negative result for protein?

Answer 32

Blue

Question 33

What colour will Benidict’s turn for a negative result for sugar?

Answer 33

Blue

Question 34

What colour will iodine turn for a negative result for starch?

Answer 34

Brown

Question 35

What do we use to test for sugar?

Answer 35

Ethanol

Question 36

What colour will ethanol turn for a positive result for lipids?

Answer 36

Milky-white

Question 36

What colour will ethanol turn for a negative result for lipids?

Answer 36

Colourless