Question

Explain Phagocytosis in amoeba with suitable diagrams.

Answer 1

Answer:

Phagocytosis, process by which certain living cells called phagocytes ingest or engulf other cells or particles. The phagocyte may be a free-living one-celled organism, such as an amoeba, or one of the body cells, such as a white blood cell

Answer 2

$\huge\underline\purple{Answer}$

Phagocytosis in Amoeba with diagram❤

Phagocytosis, process by which certain living cells called phagocytes ingest or engulf other cells or particles. The phagocyte may be a free-living one-celled organism, such as an amoeba, or one of the body cells, such as a white blood cell. In some forms of animal life, such as amoebas and sponges, phagocytosis is a means of feeding.

The process of phagocytosis in Amoeba proteus was examined by following the uptake of Tetrahymena pyriformis and agarose beads. The ciliates are taken up in a time dependent and saturable manner.

T. pyriformis apparently emits a water-soluble substance that acts as a chemo attractant to the amoebae. Plain agarose beads are not engulfed by A. proteus, but those beads having reduced glutathione with the -SH group exposed are taken up almost to the same extent as T. pyriformis. Phagocytosis of the glutathione beads is calcium-dependent with maximum bead uptake at 10-4M Ca++.

Glutathione applied to A. proteus brings about pseudopod formation, increased phagocytosis and displacement of surface-associated calcium.