Exam 3: The Plasma Membrane and Membrane Potential

OTHER The following seven questions are associated with the accompanying figure (above) of the plasma membrane. -Which structure contributes to both the fluidity and stability of the membrane?

Assume that a membrane that is permeable to Na⁺ but not to Cl^- separates two solutions. The concentration of sodium chloride on side 1 is much higher than on side 2. Which of the following ionic movements will take place?

The model of the plasma membrane as a lipid bilayer studded and penetrated by proteins is known as the ____________________ model of membrane structure.

Pinocytosis refers to the process of a cell engulfing a large, multimolecular particle and bringing the particle within the contents of the cell.

Indicate which constituent of the plasma membrane is responsible for performing the function in question by filling in the appropriate blank using the answer code below. -Important in the aggregation of cells to form tissues.

Which term is associated with transport maximum (Tm) of a carrier?

Which of the following is incorrect about water movement across the membrane?

____________________ diffusion allows materials to pass through a carrier protein without the expenditure of energy.

Which of the following statements concerning the Na⁺-K⁺ pump is incorrect?

Indicate which constituent of the plasma membrane is responsible for performing the function in question by filling in the appropriate blank using the answer code below. -Serves as carrier to transport particles across the membrane.

The direct actions of the sodium-potassium pump contribute to the majority of the generation of the resting membrane potential.

OTHER The following seven questions are associated with the accompanying figure (above) of the plasma membrane. -Which structure protrudes like antennas from the cell surface?

Indicate the various roles of the following ions: -ion whose equilibrium potential is opposite in charge of the resting membrane potential

The SGLT transporter is a glucose-sodium cotransport system.

Surface foldings along the membranes of the small intestine increase the ____________________ for absorption.

Indicate the various roles of the following ions: -on that is actively transported out of the cell

The three characteristics that determine the kind and amount of material that can be moved across a membrane by carrier-mediated transport are ____________________, ____________________, and ____________________.

Exocytosis of secretory products is triggered by the entry of ____ into the cell in response to a specific neural or hormonal stimulus.

Integrins

The plasma membrane