Question

Question 1 How does the glucose symport work? A Glucose enters the symport, glucose gets released into the cell, Na+ is just used as the source of energy OB Both glucose and Na+ enter the symport, Na+ only is released oc Na+ enters the symport, Nat gets released into the cell, then glucose enters the symport and gets released outside the cell Op Both glucose and Na+ enter the symport, glucose only is released O E Both glucose and Na+ enter the symport, both are then released into the cell

its a question and its asking which is the correct answer....

Answer 1

1. Answer: E

• Glucose molecules may be acquired within the cell by active transport.
• Active transport: Movement of molecules or ions from lower to higher concentrations or against concentration gradient, thus, energy (in primary active transport- in form of ATP, in secondary active transport-in form of electrochemical gradient) is required.
• Includes transport proteins like symporters and antiporters. Like the ion pums(Na+/K+ pumps or APT pump.
• Glucose molecules may be acquired within the cell by active transport.
• Glucose-sodium symport act as co-transporter.
• Both glucose and sodium bind to the transporter simultaneously and are co-transported within the cell.

2. Answer: E

The vesicle export proteins to surface, outside the membrane. The tethering of the vesicle prevent backward movement of the protens.

Tight junctions (TJ) forms sealing between the cells by forming a continuous intercellular barrier.

· Tight junctions (TJ) forms sealing between the cells by forming a continuous intercellular barrier.

Extracellular barriers also prevent protein leaking into cells