B 3.2 the human digestive system

Question 1

a = liver                      1= breaking down large insoluble molecules into smaller soluble molecules and absorption
B = stomach               2 absorbing water from undigested food
C = small intestine     3 = producing bile 
D = Large intestine    4 = Breaking down large insoluble molecules into smaller soluble molecules

Answer 1

A – 3
B – 4
C – 1
D – 2

Question 2

explain the difference between organs and organ systems, giving two examples

Answer 2

A – 3
B – 4
C – 1
D – 2

Question 3

using the difference between organs and organ systems giving two examples

Answer 3

Each part of digestive system relies on preceding parts.
Stomach relies on mouth, teeth, and salivary glands to deliver chunks of
chewed food.
Small intestine depends on stomach to continue digestive process
and on enzymes made by pancreas to help with the digestive process.
Large intestine can only deal with remains of food already digested in
the small intestine (soluble molecules absorbed into blood, leaving
waste material and water),
absorbing water and removing faeces from body.