16. Amoeba acquires its food through a process,
termed :
(a) Exocytosis
(b) Endocytosis
(c) Plasmolysis
(d) Exocytosis and endocytosis both
16. Amoeba acquires its food through a process,
termed :
(a) Exocytosis
(b) Endocytosis
(c) Plasmolysis
(d) Exocytosis and endocytosis both
The correct option is B Endocytosis
(B) Endocytosis
Explanation of the correct option
(1) Endocytosis is a process by which cells absorb molecules by engulfing them.
(2) Cells use this mechanism when the molecules are larger and polar hence, cannot pass through the hydrophobic cell membrane.
(3) The process shows the engulfment of small food particles by forming an invagination around them and then forming a small vesicle.
(4) This vesicle is then taken inside the cell and then the vesicle is broken down to release the food particles.
Explanation of the incorrect option
(1) Exocytosis is the fusion of the secretory vesicle with the plasma membrane.
(2) Plasmolysis is a typical response of plant cells exposed to hyperosmotic stress.
Concluding statement
The Amoeba's plasma membrane forms a pocket around the food material and engulfs the solid material, forming a food vacuole in the cytoplasm, this is called Endocytosis.
Endocytosis
(B) Endocytosis
Explanation of the correct option
(1) Endocytosis is a process by which cells absorb molecules by engulfing them.
(2) Cells use this mechanism when the molecules are larger and polar hence, cannot pass through the hydrophobic cell membrane.
(3) The process shows the engulfment of small food particles by forming an invagination around them and then forming a small vesicle.
(4) This vesicle is then taken inside the cell and then the vesicle is broken down to release the food particles.
Explanation of the incorrect option
(1) Exocytosis is the fusion of the secretory vesicle with the plasma membrane.
(2) Plasmolysis is a typical response of plant cells exposed to hyperosmotic stress.
Concluding statement
The Amoeba's plasma membrane forms a pocket around the food material and engulfs the solid material, forming a food vacuole in the cytoplasm, this is called Endocytosis.
