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Cell Parts and Functions. By: Kate Latham. Reviewed by: BD Editors. Last Updated: March 31, 2021. All cells contain specialized, subcellular structures that are adapted to keep the cell alive. Some of these structures release energy, while others produce proteins, transport substances, and control cellular activities.
The nucleus is a spherical or oval-shaped structure at the center of the cell. The cytoplasm is the region outside the nucleus that contains cell organelles and cytosol, or cytoplasmic solution. Intracellular fluid is collectively the cytosol and the fluid inside the organelles and the cell nucleus.
cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast. Other cells acquire specialized functions as they mature.
Extracellular structures and cell-cell junctions. Learn. Extracellular matrix. Plant cell walls. The extracellular matrix and cell wall. Cell-cell junctions. Overview of animal and plant cells. Practice.
All eukaryotic cells consist of three basic parts. These are the cell membrane, the nucleus, and the cytoplasm. The cell membrane surrounds the outside of the cell, the nucleus is found in the middle of the cell, and the cytoplasm fills the gap between the two.
See figure \(\PageIndex{5}\) and table \(\PageIndex{1}\) below to learn the structure and functions of different organelles such as mitochondria (which are specialized to produce cellular energy in the form of ATP) and ribosomes (which synthesize the proteins necessary for the cell to function).
The goal of this tutorial is for you to be able to describe cell theory, differences between prokaryotic and eukaryotic cells and understand cell structure and function.
There are two basic types of cells: prokaryotes and eukaryotes. The difference is simple and readily recognizable under light microscopy. Eukaryotic cells contain intracellular membrane-bound compartments (called organelles). Prokaryotic cells do not contain any such compartments (Figure \(\PageIndex{1}\)). Figure \(\PageIndex{1}\). A ...
Lesson 2: Basic cell structures. Introduction to the cell. Introduction to cilia, flagella and pseudopodia. Basic cell structures review. Identifying cell structures.
Plasma membrane - The membrane enclosing a cell is made up of two lipid layers called a "bilipid" membrane. The lipids that are present in the plasma membrane are called "phospholipids." These lipid layers are made up of a number of fatty acid building blocks.