What is phagocytosis? it is a type of endocytosis in which a cell engulfs a particle in a vacuole. it is a type of exocytosis in which a cell engulfs a particle in a vacuole. it is a type of endocytosis in which extracellular fluid is taken into the cell in tiny vescicles. it is a type of exocytosis in which extracellular fluid is taken into the cell in tiny vesicles. g

It is a type of endocytosis in which a cell engulfs a particle in a vacuole.

Explanation:

There are 2 processes by which cells uptake and release materials.

These are:

EXOCYTOSIS:

It is a process by which cells release materials inside them to the external environment.

ENDOCYTOSIS:

It is a process by which cells bring materials inside them from the external environment. It is the opposite of exocytosis.

Endocytosis is of different types including phagocytosis, pinocytosis and receptor-mediated endocytosis.

PHAGOCYTOSIS

Phagocytosis involves the phenomenon in which a cell engulfs a particle in a vacuole. The particle may be a disease causing microorganism, or cell of the body. This process can be conceptualized as "cellular eating".

EXAMPLE:

Macrophages consuming bacterium Mycobacterium tuberculosis is an example of phagocytosis.

PINOCYTOSIS:

It is the process by which cells uptake liquid substances. It can be thought of as "cellular drinking"

RECEPTOR-MEDIATED ENDOCYTOSIS:

It is a process by which cells uptake hormones, metabolites and other substances. It is performed by cells which possess a receptor for that substance. It involves the inward invagination of cell membrane after the binding of substance and its receptor.

Coming back to answer choices,

It is a type of endocytosis in which a cell engulfs a particle in a vacuole.

This is the correct answer choice as it describes the process of phagocytosis.

It is a type of exocytosis in which a cell engulfs a particle in a vacuole.

This is the wrong answer choice as phagocytosis is an endocytic process.

It is a type of endocytosis in which extracellular fluid is taken into the cell in tiny vescicles.

This is the wrong answer choice as this answer choice describes the process of pinocytosis and not phagocytosis.

It is a type of exocytosis in which extracellular fluid is taken into the cell in tiny vesicles.

This is the wrong answer choice. It does not describe phagocytosis. Phagocytosis is an endocytic process and involves the internalization of cells and pathogens.

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