Animal cell, cutaway illustration. The cell membrane surrounds internal structures (organelles) that include the nucleus, which contains the nucleolus


Animal cell, cutaway illustration. The cell membrane surrounds internal structures (organelles) that include the nucleus, which contains the nucleolus. The nucleus contains DNA (deoxyribonucleic acid), the cell's genetic information. Surrounding the nucleus is endoplasmic reticulum (ER), a membrane bound organelle that is the site of lipid synthesis and the production of membrane-bound proteins. ER may be either rough, that is with ribosomes, or smooth, without ribosomes. The proteins are stored in the flattened membranes of the Golgi complex. Energy is generated by mitochondria. Lysosomes and peroxisomes contain enzymes for digesting biomolecules. Vacuoles and vesicles store and transport substances. Cells are the microscopic structural and functional units of all living organisms. For an unlabelled version of this image see C033/7308.


Size: 6060px × 4040px
Photo credit: © CAROL & MIKE WERNER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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