Membranes and exchange q's i have gotten wrong in the past

Question 1

describe the gross structure of human gas exchange

Answer 1

Trachea, bronchi, bronchioles, alveoli

Question 2

compare and contrast the structure and properties of triglycerides and phospholipids

Answer 2

Triglycerides have 3 fatty acids whereas phospholipids have 2

Phospholipids have a phosphate hydrophilic head whereas triglycerides are entirely hydrophobic

Both may be saturated or unsaturated fatty acids
Both are insoluble
Both contain glycerol
Both have ester bonds

Question 3

Describe how lactose is formed and where in the cell it would be attached to a polypeptide to form glycoprotein.

Answer 3

• Condensation reaction between glucose and galactose

-form glycosidic bond

• added to a polypeptide in golgi apparatus

Question 4

Function of ATP hydrolyse in the ileum

Answer 4

• Release energy by the hydrolysis of ATP to ADP + Pi
• for active transport of ions into the ileum for creating conc. gradient for absorption