Plasma Membrane Flashcards
Water molecules move across the plasma membrane through water channels known as:
Aquaporins
Diffusion of water molecules from the region of its high concentration to the region of its low concentration across the plasma membrane is known as
Osmosis
Membrane extensions of an immune system cell to capture a yeast cell is an example of
Phagocytosis
Which of the following statements regarding exocytosis is correct?
Select one:
a. Is used to deliver material into the extracellular space
b. Takes up large molecules from the extracellular space
c. Is always employed by cells for secretion
d. Allows the retrieval of elements of the plasma membrane.
a. Is used to deliver material into the extracellular space
A substance can only be accumulated against its electrochemical gradient by:
Active transport
Gases such as oxygen and carbon dioxide cross the plasma membrane by:
Passive Diffusion
Which transport induces conformational change in protein?
Facilitated diffusion
Phospholipid bi layer is
Select one:
a. Hydrophobic
b. Hydrophilic and hydrophobic
c. Hydrophilic
b. Hydrophilic and hydrophobic
The major biomolecules responsible for selective uptake of materials across plasma membrane
Proteins
