18 Questions
What is the role of GLUT1, the carrier protein mentioned in the text?
Transporting glucose
In a hypertonic solution outside an animal cell, what happens to the cell?
It shrinks due to water moving out of the cell
What is the primary driving force for movement in simple diffusion?
Concentration gradient
How does an isotonic solution affect water movement in and out of an animal cell?
Balances water movement in and out of the cell
What is the fate of carbon dioxide in a situation involving low oxygen and high carbon dioxide levels?
It will be released outside the cell
How does a hypotonic solution affect an animal cell?
Results in water movement into the cell
What is the driving force for diffusion, movement, or transport to happen?
Concentration gradient
What is one of the key functions of carrier proteins in the cell?
Assisting in maintaining electrochemical potential
In which type of solution is the concentration of solutes outside the cell higher than inside, leading to water leaving the cell?
Hypertonic solution
Which type of movement occurs when solute moves from an area of lower concentration to higher concentration?
Active transport
What do ions experience that prevents them from easily passing through membranes?
Spheres of hydration
Which process involves the movement of water across a semipermeable membrane to equalize concentrations on both sides?
Osmosis
Why is the conversion of CO2 to bicarbonate essential?
To prevent CO2 accumulation and maintain RBC capacity for CO2 transport
What happens if CO2 is not converted to bicarbonate?
CO2 levels in the body will increase
Why is simple diffusion considered a linear process?
As it is proportional to solute concentration
How does facilitated diffusion differ from simple diffusion?
It involves carrier proteins
Why is the movement of solutes through ion channels faster than transport by carrier proteins?
Carrier proteins undergo conformational changes during transport
How are carrier proteins similar to enzymes?
Both can catalyze reactions
Test your knowledge on cell membrane transport mechanisms including carrier proteins, conformational changes, and concentration gradients. Understand how solutes move across cell membranes and the role of membrane permeability.
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