Function of cell
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Cell biology
Branch of biology that studies cells
This article is about the branch of biology. For cells themselves, see Cell (biology).
Cell biology (also cellular biology or cytology) is a branch of biology that studies the structure, function, and behavior of cells.[1][2] All living organisms are made of cells. A cell is the basic unit of life that is responsible for the living and functioning of organisms.[3] Cell biology is the study of the structural and functional units of cells. Cell biology encompasses both prokaryotic and eukaryotic cells and has many subtopics which may include the study of cell metabolism, cell communication, cell cycle, biochemistry, and cell composition. The study of cells is performed using several microscopy techniques, cell culture, and cell fractionation. These have allowed for and are currently being used for discoveries and research pertaining to how cells function, ultimately giving insight into understanding larger organisms. Knowing the components of cells and how cells work is fundamental to all biol
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Cell (biology)
Basic unit of many life forms
This article is about the basic unit of lifeforms. For the branch of biology that studies them, see Cell biology.
The cell is the basic structural and functional unit of all forms of life. Every cell consists of cytoplasm enclosed within a membrane; many cells contain organelles, each with a specific function. The term comes from the Latin word cellula meaning 'small room'. Most cells are only visible under a microscope. Cells emerged on Earth about 4 billion years ago. All cells are capable of replication, protein synthesis, and motility.
Cells are broadly categorized into two types: eukaryotic cells, which possess a nucleus, and prokaryotic cells, which lack a nucleus but have a nucleoid region. Prokaryotes are single-celled organisms such as bacteria, whereas eukaryotes can be either single-celled, such as amoebae, or multicellular, such as some algae, plants, animals, and fungi. Eukaryotic cells contain organelles including mitochondria, which provide energy for cell functions; chloroplasts, which create sugars by photosy
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Cells
memories for my mother
Gavin McCrea
‘This is a book that brims with stored-up pain — and with a very particular kind of courage. For all its dark and sometimes brutal honesty, what the reader is going to remember here is the way that McCrea’s prose fights on through his hurt to bring home pages that seem lit from within by love and beauty. A memoir that is as rewarding as it is undoubtedly challenging.’
Neil Bartlett, author of Ready To Catch Him Should He Fall and Address Book
‘Cells is a compulsive tidal force of a book: detailed, vulnerable, and brave, it pulled me in swiftly and held me to the very end.’
Seán Hewitt, author of All Down Darkness Wide
‘Reading Cells, I was struck by McCrea’s generosity in interrogating personal histories as they relate to wider familial and social systems. Contemplating devotion and loss
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