Biology Questions and Answers
Cell Digestion
- What is extracellular
digestion?
Extracellular digestion is that in which
food breaking into utilcan be internalized by the cell is done ine molecules that (^)
the extracellular space, i.e., outside the
cell. In extracellular dsecret substances that bigestion,reak big the cells
molecules into smaller ones in the
external ebenefit from thnvironment. Later these products of e cell can
digestion.
- What is intracellular
digestion?
Intracellular digestion, or cellular
digestion,of the cell o is the breaking in the interif big molecules coming fromor (^)
outside or even from its own cell
metabolismProducts and residues of the into smaller molecules.
intracellular digestion are used by the
cell or excreted.
Intracellular dtwo types: heterophagic intracellularigestion is classified into
digestion and autophagic intracellular
digestion.
- What is the main cell
organelle involved in cell
digestion? What are the
properties of that organelle
that enable it to do the task?
The organelles responsible intracellular digestion are thefor
lysosomes. Lysosomes are vesicles that
contain digestive enbreaking big molecules izymes canto smallerpable of
ones. These vesicles fuse with others
that carry thand then digestion takes pe material to blace.e digested - What is heterophagic
intracellular digestion? How is
this process accomplished?
Heterophagic intracellular dithe breaking into smaller substances ogestion is (^) f
external suby pinocytosisbstances or phagocytosis. engulfed in the cell
Phagosomes or pinosomes fuse with
lysosomes makinvacuoles. Within tg the digestivehe digestive vacuoles (^)
the molecules to be digested are
hydrolyzdigestion cross through the membraneed and the products of the (^)
and reach the cytoplasm or they are
kept insidwith residues from digestion is callee the vacuoles. The vacuolde
residual body and by exocytosis it fuses
with the plasma membrane andliberates its “waste” in the exterior (^)
space.
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