Describe the appearance of a general cell.
Answers
Answer:
A cell is a mass of cytoplasm that is bound externally by a cell membrane. Usually microscopic in size, cells are the smallest structural units of living matter and compose all living things. Most cells have one or more nuclei and other organelles that carry out a variety of tasks
Answer:
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Explanation:
The cell is the basic structural, functional , and biological unit of all known organisms. A cell is the smallest unit of life". The study of cells is called cell biology , cellular biology, or cytology.
cells consist of cytoplasm enclosed within a membrane , which contains many biomolecules such as proteins and nucleic acids . Most plant and animals cells are only visible under a light microscope, with dimensions between 1 and 100 micrometers. Electron microscopy gives a much higher resolution showing greatly detailed cell structure . organisms can be classified as unicellular (consisting of a single cell such as bacteria ) or multicellular (including plants and animals ) Most unicellular organisms are classified as microorganisms
The number of cells plants and animals varies from species to species ;it has been estimated that humans contain somewhere around 40 trillion (4×10 to the power 13 ) cells . The human brain accounts for around 80 billion of these cells.
cells were discovered by Robert Hooke in 1665 , who named them for their resemblance to cells inhabited by Christian monks in a monastery.