Question

How do phagocytosis and pinocytosis differ?

   How do phagocytosis and pinocytosis differ?

Biology

Peter H. Raven 7th Edition

Chapter 6, Problem 4

Instant Answer

Solved by Expert Parvati Devi

02/04/2022

Step 1

Phagocytosis is the process by which a cell engulfs a solid particle to form an internal compartment known as a phagosome. Pinocytosis, on the other hand, is the process by which a cell engulfs a liquid particle to form an internal compartment known as a pinosome. Show more…

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How do phagocytosis and pinocytosis differ?

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Key Concepts

Phagocytosis

Phagocytosis is a form of endocytosis where the cell engulfs large particles, such as bacteria or cellular debris. It involves the extension of the cell membrane around the target, forming pseudopods that eventually enclose the particle within a vesicle called a phagosome, which is then processed and typically digested within the cell.

Pinocytosis

Pinocytosis is a type of endocytosis often referred to as 'cell drinking.' In this process, the cell takes in extracellular fluid along with dissolved molecules by forming small vesicles. Unlike phagocytosis, pinocytosis is generally non-specific, internalizing substances by sampling the surrounding fluid continuously.

Endocytosis

Endocytosis is the broader cellular process that includes both phagocytosis and pinocytosis. It describes the mechanism by which cells internalize materials from their external environment through the invagination of the cell membrane, forming vesicles that transport the ingested substances into the cell for further processing.

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