Which is TRUE about the structure of myoglobin?

• Made up of multiple polypeptide chains
• One myoglobin molecule can bind to one O₂
• Each polypeptide chain binds to four haem groups
• A type of fibrous protein with a quaternary structure

Which is TRUE about the structure of hemoglobin?

• Made up of one polypeptide chain
• Can bind to one oxygen
• Is a respiratory pigment in RBC
• Is a tertiary level of protein

Bohr effect occurs when blood pH is decreases.

In lymphatic system, lacteal is the blood capillary in small intestine.

Symplastic pathway is the movement of substances through the cell wall.

In the root, water potential in xylem is lower than in epidermis.

Which statement is NOT TRUE about the translocation of sucrose?

• Unloaded sucrose is converted into starch in the sink cell
• Phloem sap is transported from source to sink cells
• Occurs within the sieve tube of phloem
• Loading of sucrose increases the water potential in the sieve tube

Transpiration pull is causes by the evaporation at the leaves, pulling the water upward continuously.

Gluconeogenesis is

• Conversion of glycogen to glucose
• Conversion of glucose to glycogen
• Conversion of protein and lipid to glucose
• Breakdown of glucose into water and carbon dioxide

Glycogenesis

• Conversion of glycogen to glucose
• Conversion of glucose to glycogen
• Conversion of protein and lipid to glucose
• Breakdown of glucose into water and carbon dioxide

Glycogenolysis

• Conversion of glycogen to glucose
• Conversion of glucose to glycogen
• Conversion of protein and lipid to glucose
• Breakdown of glucose into water and carbon dioxide

Which is NOT the function of Kidney?

• Transport lipid from small intestine
• Regulate blood pH
• Regulate blood osmolarity
• Remove metabolic waste

In the loop of Henle, descending limb is permeable to water but impermeable to NaCl, while ascending limb is permeable to NaCl but impermeable to water.

Reabsorption occurs in all of these part of nephron EXCEPT

• Bowman's capsule
• Proximal tubule
• Loop of Henle
• Distal tubule
• Collecting duct

Countercurrent multiplier occurs in

• Proximal tubule
• Distal tubule
• loop of Henle
• Collecting duct