The digestive system

Question 1

What is digestion?

Answer 1

A process where large insoluble food particles are broken down into smaller water-soluble molecules that can be absorbed by blood and give energy to the body.

Question 2

What is the first stage of the digestive system?

Answer 2

Chewing

Question 3

________________ helps to break down protein in the stomach.

Answer 3

Pepsin

Question 4

_________________ helps to break down fat in the small intestines.

Answer 4

Bile

Question 5

What are the two types of digestion?

Answer 5

Mechanical digestion
Chemical digestion

Question 6

____________ is the ___________in of ______________into the mouth.

Answer 6

Ingestion is the taking in of food into the mouth.

Question 7

_____________ is the ___________ of ____________________ into the blood in the ___________.

Answer 7

Absorption is the uptake of soluble molecules into the blood in the villi

Question 8

_________________is the _____________of the digested food molecules into the _____________ of the body from where they are used.

Answer 8

Assimilation is the movement of the digested food molecules into the cells of the body from where they are used.

Question 9

____________ is the ____________ of _________from parts of the food that cannot be digested.

Answer 9

Egestion is the passing out of feces from parts of the food that cannot be digested

Question 10

Which nutrients are absorbed as they are?
Due to their small particle size.

However which nutrients need to be broken down for absorption?

Answer 10

Simple sugars
water
vitamins
minerals

lipids
proteins
carbohydrates

Question 11

Lipids are broken down into what?

Answer 11

Lipids→ fat drops →fat molecules →glycerol +fatty acids

Question 12

Proteins are broken down into what?

Answer 12

Proteins→ protein molecules→ polypeptides→ amino acids

Question 13

Carbohydrates are broken down into what?

Answer 13

Carbohydrates →starch molecule →maltose →glucose