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Question 1 How does the glucose symport work? A Glucose enters the symport, glucose gets released into the cell, Na+ is just
Question 3 How is protein movement restricted within the cell membrane? O A By tethering proteins to the cell cortex OB By fo

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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

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