lysosome

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Formation of lysosomes

3D illustration of cellular autophagy showing a lysosome fusing with an autophagosome filled with various microbes and molecules, against a black background.

The video thumbnail image shows an illustration of an animal cell next to a photo of a whale swimming in the oean.

How Are Plant Cells Different from Animal Cells?

Cutaway illustration of a eukaryotic animal cell showing labeled internal structures, including the nucleus, nucleolus, mitochondria, endoplasmic reticulum, Golgi apparatus, and other organelles.

Detailed diagram showing the transport of lipoproteins in the human body, illustrating how dietary fats and cholesterol are absorbed in the small intestine, packaged into chylomicrons, and transported through lymphatic vessels and the bloodstream. The diagram traces the conversion of chylomicrons to VLDL, IDL, LDL, and HDL particles, highlighting their roles in fat and cholesterol delivery, storage, and recycling, with labeled pathways to the liver, muscle, and adipose tissue, and includes cellu

Side-by-side labeled diagrams of a typical animal cell and a plant cell, showing internal structures such as nucleus, mitochondrion, endoplasmic reticulum, and unique features like chloroplasts and cell wall in the plant cell.

Diagram showing receptor-mediated endocytosis in a cell: a ligand binds to a receptor on the cell membrane, forming a coated pit that becomes a coated vesicle. The vesicle fuses with an endosome, where receptors are recycled and the contents are degraded in a lysosome.

What happens to your body after you die?

lysosome: Media

biology

Videos

The video thumbnail image shows an illustration of an animal cell next to a photo of a whale swimming in the oean.

The Major Parts of an Animal Cell

From teeny-tiny ants to 200-ton whales, all members of the animal kingdom are composed...

Video: Encyclopædia Britannica, Inc.

How Are Plant Cells Different from Animal Cells?

How Are Plant Cells Different from Animal Cells?

All living things are composed of cells.

Video: Encyclopædia Britannica, Inc.

What happens to your body after you die?

What happens to your body after you die?

Learn what happens to the body after death.

Video: © American Chemical Society (A Britannica Publishing Partner)

Images

Formation of lysosomes

Formation of lysosomes

Lysosomes form by budding off from the membrane of the trans-Golgi network. Macromolecules...

Encyclopædia Britannica, Inc.

3D illustration of cellular autophagy showing a lysosome fusing with an autophagosome filled with various microbes and molecules, against a black background.

autophagy

Illustration showing the fusion of a lysosome (upper left) with an autophagosome...

© Kateryna Kon/Dreamstime.com

Cutaway illustration of a eukaryotic animal cell showing labeled internal structures, including the nucleus, nucleolus, mitochondria, endoplasmic reticulum, Golgi apparatus, and other organelles.

Eukaryotic cell

Cutaway drawing of a eukaryotic cell.

Encyclopædia Britannica, Inc.

Detailed diagram showing the transport of lipoproteins in the human body, illustrating how dietary fats and cholesterol are absorbed in the small intestine, packaged into chylomicrons, and transported through lymphatic vessels and the bloodstream. The diagram traces the conversion of chylomicrons to VLDL, IDL, LDL, and HDL particles, highlighting their roles in fat and cholesterol delivery, storage, and recycling, with labeled pathways to the liver, muscle, and adipose tissue, and includes cellu

lipoprotein complexes

Synthesis of lipoprotein complexes in the small intestine, liver, and blood plasma...

Encyclopædia Britannica, Inc.

Side-by-side labeled diagrams of a typical animal cell and a plant cell, showing internal structures such as nucleus, mitochondrion, endoplasmic reticulum, and unique features like chloroplasts and cell wall in the plant cell.

Organelles of eukaryotic cells

A defining feature of eukaryotic cells is the presence of membrane-bound organelles...

Encyclopædia Britannica, Inc.

Diagram showing receptor-mediated endocytosis in a cell: a ligand binds to a receptor on the cell membrane, forming a coated pit that becomes a coated vesicle. The vesicle fuses with an endosome, where receptors are recycled and the contents are degraded in a lysosome.

Receptor-mediated endocytosis

Receptors play key roles in many cellular processes. For example, receptor-mediated...

Encyclopædia Britannica, Inc.