Co Transport And The Absorption Of Glucose In The Ileum

Question 1

Ileum

Answer 1

Small intestine

Question 2

How do microvilli help to maximise absorption in the small intestine?

Answer 2

• Folds of plasma membrane
• more membrane gives larger surface area
• therefore more molecules can pass through the membrane

Question 3

What is starch broken down into in the small intestine?

Answer 3

Starch → maltose
Maltose → glucose

Question 4

What enzymes are used to hydrolyse starch?

Answer 4

Pancreatic amylase and maltase

Question 5

When proteins are hydrolysed, what is produced ?

Answer 5

Amino acids

Question 6

What enzymes are used to hydrolyse proteins?

Answer 6

Proteases
Pepsin in the stomach
Trypsin in the small intestine

Question 7

What role does the circulatory system play in maintaining the diffusion gradient between the lumen and the blood?

Answer 7

The blood carries away the products of digestion

Question 8

Is glucose moving into the cell down its diffusion gradient or against it?

Answer 8

Against

Question 9

What effectively causes the movement of glucose into the cell?

Answer 9

Sodium ions moving down concentration gradient