Table of Contents
- 1 What occurs when a cell engulfs large particles?
- 2 What is it when glucose enters a liver cell through a protein channel?
- 3 Is the movement of large food particles into a cell?
- 4 What moves large particles and fluid droplets across the cell membrane?
- 5 How is the uptake of substances targeted in endocytosis?
- 6 How are large particles transported through the cell membrane?
What occurs when a cell engulfs large particles?
Phagocytosis is the process by which cells ingest large particles, including other cells, by enclosing the particles in an extension of the cell membrane and budding off a new vesicle. During pinocytosis, cells take in molecules such as water from the extracellular fluid.
What is it when glucose enters a liver cell through a protein channel?
Glucose transporter (GLUT) is a facilitative transport protein involved in glucose translocation across the cell membrane.
Which uses energy to pick up molecules outside the cell and carry them inside?
During active transport, a protein pump uses energy, in the form of ATP, to move molecules from an area of low concentration to an area of high concentration. An example of active transport is the sodium-potassium pump, which moves sodium ions to the outside of the cell and potassium ions to the inside of the cell.
Is the movement of large food particles into a cell?
ENDOCYTOSIS AND EXOCYTOSIS: MOVEMENT OF LARGE PARTICLES It is possible for large molecules to enter a cell by a process called endocytosis, where a small piece of the cell membrane wraps around the particle and is brought into the cell. If the particle is solid, endocytosis is also called phagocytosis.
What moves large particles and fluid droplets across the cell membrane?
Mechanisms for moving substances across the plasma membrane that requires the use of cellular ATP include __________ and ________. What moves large particles and fluid droplets across the cell membrane? vesicular transport. The concentration of solutes in a cell affects the fluid volume and pressure within the cell.
How are solid particles engulfed in the plasma membrane?
Solid particles are engulfed by phagocytosis (“cell eating”), a process that begins when solids make contact with the outer cell surface, triggering the movement of the membrane. The desired particles are then enclosed within a small piece of the plasma membrane which forms a sac called a vacuole (or vesicle),…
How is the uptake of substances targeted in endocytosis?
In receptor-mediated endocytosis, uptake of substances by the cell is targeted to a single type of substance that binds to the receptor on the external surface of the cell membrane. (credit: modification of work by Mariana Ruiz Villareal)
How are large particles transported through the cell membrane?
You might have correctly hypothesized that the uptake and release of large particles by the cell requires energy. A large particle, however, cannot pass through the membrane, even with energy supplied by the cell. There are two primary mechanisms that transport these large particles: endocytosis and exocytosis.
Where does the reverse process of endocytosis take place?
Proteins within the cell membrane In which process, does the cell membrane change shape and engulfs the particle? endocytosis The reverse process of endocytosis is called ___________. exocytosis What is the process where large particles are allowed to leave a cell exocytosis. THIS SET IS OFTEN IN FOLDERS WITH… Passive and Active Transport