Cells vocabulary

Cell

The smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane.

Cell Membrane

The semipermeable membrane surrounding the cytoplasm of a cell.

Cell Wall

A rigid layer of Polysaccharides lying outside the plasma membrane of the cells of plants, Fungi, and bacteria.

Organelle

Any of a number of organized or specialized structures within a living cell.

Tissue

Any of the distinct types of material which animals or plants are made, consisting of specialized cells and their products.

Organ

A part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans.

Unicellular

Consisting of a single cell.

Multicellular

Having or consisting of many cells.

Autotroph

An organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.

Heterotroph

And organism deriving its nutritional requirements from complex organic substances.

Prokaryote

A single-celled organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelles.

Eukaryotic

Any organism whose cells contain a nucleus and other organelles enclosed within membranes.

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