-Animal cells are eukaryotic cells, or cells with a membrane-bound nucleus. Unlike prokaryotic cells, DNA in animal cells is housed within the nucleus. In addition to having a nucleus, animal cells also contain other membrane-bound organelles,......
When a cell becomes damaged or undergoes some type of infection, it will self destruct by a process called apoptosis. Apoptosis works to ensure proper development and to keep the body's natural process of mitosis in check. A cell's inability to undergo apoptosis can result in the development of cancer.
Animal cells are eukaryotic cells, or cells with a membrane-bound nucleus. Unlike prokaryotic cells, DNA in animal cells is housed within the nucleus. In addition to having a nucleus, animal cells also contain other membrane-bound organelles, or tiny cellular structures, that carry out specific functions necessary for normal cellular operation. Organelles have a wide range of responsibilities that include everything from producing hormones and enzymes to providing energy for animal cells.
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Animal Cells: Structures and Organelles
The following are examples of structures and organelles that can be found in typical animal cells:
Centrioles - organize the assembly of microtubules during cell division.
Cytoplasm - gel-like substance within the cell.
Endoplasmic Reticulum - extensive network of membranes composed of both regions with ribosomes (rough ER) and regions without ribosomes (smooth ER).
Golgi Complex - responsible for manufacturing, storing and shipping certain cellular products.
Lysosomes - sacs of enzymes that digest cellular macromolecules such as nucleic acids.
Microtubules - hollow rods that function primarily to help support and shape the cell.
Mitochondria - power producers and the sites of cellular respiration.
Nucleus - membrane bound structure that contains the cell's hereditary information.
Nucleolus - structure within the nucleus that helps in the synthesis of ribosomes.
Nucleopore - tiny hole within the nuclear membrane that allows nucleic acids and proteins to move into and out of the nucleus.
Ribosomes - consisting of RNA and proteins, ribosomes are responsible for protein assembly.
