Biology exam

Question 1

What is putting food in the mouth called?

Answer 1

Ingestion

Question 2

What makes saliva?

Answer 2

The food when mixed with digestive juice

Question 3

what does digestive juice contain?

Answer 3

enzymes

Question 4

saliva is produced by what?

Answer 4

Salivary glands.

Question 5

What does saliva break starch into?

Answer 5

Sugar

Question 6

What is food swallowed down into?

Answer 6

The oesophagus (food pipe)

Question 7

What is the stomach acid called?

Answer 7

Hydrochloric acid

Question 8

What does the large intestine remove?

Answer 8

Water

Question 9

What happens in the small intestine’s?

Answer 9

In the small intestines the digested molecules are absorbed and enter the blood

Question 10

what are foods that cannot be digested called?

Answer 10

Faeces and they are stored in rectum

Question 11

Where are faeces pushed out?

Answer 11

The anus (egestion)

Question 12

Carbohydrates ?

Answer 12

body main source for energy eg pasta

Question 13

protein?

Answer 13

for growth and repair eg meat

Question 14

vitamins?

Answer 14

for health and helps diet

Question 15

minerals?

Answer 15

for health and growth eg fruits

Question 16

fibre?

Answer 16

good for intestines eg bread

Question 17

water?

Answer 17

for blood

Question 18

what’s kJ?

Answer 18

Kilojoules

Question 19

What are digestive enzymes and what do they do?

Answer 19

Break large insoluble food molecules into smaller soluble molecules.

Question 20

What do the smaller intestines have?

Answer 20

A large surface area for nutrients to diffuse into our bodies.

Question 21

What’s diffusion?

Answer 21

The movement of one substance through another. Particles diffuse from an area of high concentration to and area of low concentration.

Question 22

What can too much fat cause?

Answer 22

Heart disease and can make people very overweight(obese).