
How are endocytosis and exocytosis similar? How are they different?
Answer
458.4k+ views
Hint: Although most of the transport of substances takes place by diffusion in cells but few large molecules need to be exported or imported by two important phenomena – exocytosis and endocytosis.
Complete answer:
This answer consists of three parts explained as follows-
Exocytosis & endocytosis-
The endocytosis is a kind of transport mechanism which takes up large molecules inside a cell by the invagination of cell membrane thereby forming a pocket around a target substance.
Whereas exocytosis is opposite to endocytosis and herein large molecules or waste materials are expelled out of the cell to the external environment.
Differences between endocytosis and exocytosis-
• Endocytosis refers to uptake of large molecules inside the cell whereas exocytosis refers to expulsion of substances out of cell to extracellular fluid.
• Endocytosis has three o types (phagocytosis, pinocytosis, receptor-mediated endocytosis) whereas exocytosis is either regulatory or constitutive exocytosis.
• In case of endocytosis substances are taken up by formation of small vesicles whereas in exocytosis substances are expelled by membrane fusion.
Similarities between endocytosis and exocytosis-
• Plasma membrane is involved in case both endocytosis as well as endocytosis
• Both are involved in transporting large molecules across the cell/plasma membrane.
• Both processes require energy in actively transporting substances across membranes.
Note: In endocytosis the plasma membranes forms an invagination around a food particle or large molecule and engulf it in the forming a pocket like structure which later pinches off small vesicle and the substance is carried inside the cell (within the vesicle). In exocytosis, a waste material or large molecule is surrounded or taken up in a membrane bound vesicle which later fuses with the interior of the plasma membrane and is expelled to the external environment.
Complete answer:
This answer consists of three parts explained as follows-
Exocytosis & endocytosis-
The endocytosis is a kind of transport mechanism which takes up large molecules inside a cell by the invagination of cell membrane thereby forming a pocket around a target substance.
Whereas exocytosis is opposite to endocytosis and herein large molecules or waste materials are expelled out of the cell to the external environment.
Differences between endocytosis and exocytosis-
• Endocytosis refers to uptake of large molecules inside the cell whereas exocytosis refers to expulsion of substances out of cell to extracellular fluid.
• Endocytosis has three o types (phagocytosis, pinocytosis, receptor-mediated endocytosis) whereas exocytosis is either regulatory or constitutive exocytosis.
• In case of endocytosis substances are taken up by formation of small vesicles whereas in exocytosis substances are expelled by membrane fusion.
Similarities between endocytosis and exocytosis-
• Plasma membrane is involved in case both endocytosis as well as endocytosis
• Both are involved in transporting large molecules across the cell/plasma membrane.
• Both processes require energy in actively transporting substances across membranes.
Note: In endocytosis the plasma membranes forms an invagination around a food particle or large molecule and engulf it in the forming a pocket like structure which later pinches off small vesicle and the substance is carried inside the cell (within the vesicle). In exocytosis, a waste material or large molecule is surrounded or taken up in a membrane bound vesicle which later fuses with the interior of the plasma membrane and is expelled to the external environment.
Recently Updated Pages
Glucose when reduced with HI and red Phosphorus gives class 11 chemistry CBSE

The highest possible oxidation states of Uranium and class 11 chemistry CBSE

Find the value of x if the mode of the following data class 11 maths CBSE

Which of the following can be used in the Friedel Crafts class 11 chemistry CBSE

A sphere of mass 40 kg is attracted by a second sphere class 11 physics CBSE

Statement I Reactivity of aluminium decreases when class 11 chemistry CBSE

Trending doubts
10 examples of friction in our daily life

One Metric ton is equal to kg A 10000 B 1000 C 100 class 11 physics CBSE

Difference Between Prokaryotic Cells and Eukaryotic Cells

State and prove Bernoullis theorem class 11 physics CBSE

What organs are located on the left side of your body class 11 biology CBSE

How many valence electrons does nitrogen have class 11 chemistry CBSE
