5. Define the following:
(0) Cell
(ii) Cell organelles
(iii) Prokaryotic cell
(iv) Eukaryotic cell
Answers
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Cell :
the smallest structural and functional unit of an organism, which is typically microscopic and consists of cytoplasm and a nucleus enclosed in a membrane.
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Cell Organilles:
The cellular components are called cell organelles. These cell organelles include both membrane and non-membrane bound organelles, present within the cells and are distinct in their structures and functions. They coordinate and function efficiently for the normal functioning of the cell. A few of them function by providing shape and support, whereas some are involved in the locomotion and reproduction of a cell. There are various organelles present within the cell and are classified into three categories based on the presence or absence of membrane.
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Prokaryotic cell:
Living things consist of cells, and cells come in numerous types relating to the overall level of complexity of the organisms in which they are found. Archaea (blue-green algae, for example) and bacteria such as E. coli contain prokaryotic cells, while the more complex members of the Eukaryota domain contain eukaryotic cells.
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Eukaryotic cell:
Eukaryotes are organisms whose cells have a nucleus enclosed within a nuclear envelope.
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