GENERAL HISTOLOGY

INTRODUCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Phagocytosis is
A
the process in which extensions of cytoplasm surround and engulf large particles and take them inot the cell
B
a type of active transport
C
a process that involves energy
D
all of the answers are correct
Explanation: 

Detailed explanation-1: -Listen to pronunciation. (FA-goh-sy-TOH-sis) The process by which a phagocyte (a type of white blood cell) surrounds and destroys foreign substances (such as bacteria) and removes dead cells.

Detailed explanation-2: -Phagocytosis is a type of endocytosis. Endocytosis is a process through which a cell absorbs a particle, molecule, bacterium, or other types of matter by engulfing it. Often a phagocyte like the macrophages or a protist, engulfs a solid particle to form an internal compartment known as a phagosome.

Detailed explanation-3: -In phagocytosis, or “cell eating, ” the cell engulfs debris, bacteria, or other sizable objects. Phagocytosis occurs in specialized cells called phagocytes, which include macrophages, neutrophils, and other white blood cells. Hence, A is the correct option.

Detailed explanation-4: -Phagocytosis is an important process for nutrition in unicellular organisms, while in multicellular organisms it is found in specialized cells called phagocytes. Phagocytosis consists in recognition and ingestion of particles larger than 0.5 m into a plasma membrane derived vesicle, known as phagosome.

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