### cell:

Eukaryotic cell
* All eukaryotic cells contain a network of microtubules
  - endoplasmic reticulum
  - organelles that serve as the machinery to carry out various tasks
* All eukaryotic cells have a complex three dimensional organization
  - similar general layout
  - certain structures
  - endoplasmic reticulum except the red blood cells of mammals
  - own an external bilayered phospholipidic membrane
  - require oxygen for their more complicated and more efficient metabolism
* Most eukaryotic cells have a mitochondia
* Some eukaryotic cells are very small.
* are able to constitute multicelled animals and plants
  - also much larger than prokaryotic cells
  - called so because they have a true nucleus
* are capable of phagocytosis and endocytosis
  - sexual reproduction requiring meiosis and fertilization
* are cells which have a nucleus and contain internal structures called organelles
  - with a true nucleus
  - considerably more complicated
  - fairly complicated and have numerous parts to keep track of
* are larger and more complex
  - larger, have a membrane bound nucleus and various cellular organelles
* are more complex and are found in plants, animals and fungi
  - cells and are found in plants, animals and fungi
* are much bigger than bacterial cells
  - larger and more advanced
  - on average much larger and internally more complex than prokaryotic cells
  - subdivided by internal membranes into various membrane enclosed organelles
  - symbiotic colonies of prokaryotes many of the symbionts called organelles
  - the plants and animal cells
  - themselves a group of formerly independent organisms
  - well structured units with a membrane bound organelles like nucleus
* can differentiate and organize making it possible for multicellularity.
* characterize all forms of life except the bacteria.
* contain a nucleus, in which DNA resides
  - membranous cytoplasmic organelles
  - special energy centers
  - specialized structures surrounded by membranes
* grow and reproduce through a complex sequence of events called the cell cycle.
* has a nucleus.
* have a complex cytoskeletal system
  - highly evolved process of 'secretion'
  - membrane enclosed nucleous which contains the organism's DNA
* have a much longer doubling time than bacteria
  - more complex structure than bacteria
* have a nucleus and have membrane enclosed organelles
  - membrane-bound organelles
  - other membrane-bound compartments
  - containing several elongated DNA-bearing chromosomes
  - enclosed by a membrane
  - which contains the cellular genes in the form of chromatin
  - true nuclei that has DNA in it
  - cell components called organelles
  - internal membranes that surround the nucleus and other internal structures
  - many of the same organelles
* have more chromosomes to copy than prokaryotic cells
  - genes than Prokaryotic cells
  - nuclei and organelles that are separated from the cytoplasm by membranes
  - only one chromosome whereas eukaryotic cells have many
  - the same general layout
  - their DNA packaged in a nucleus
  - two copies of genes per cell
* is known as a cell with a well developed nucleus.
* possess a substantial amount of internal membrane.
* reproduce using either mitosis or meiosis
  - via the creation of two identical diploid cells from one diploid cell
* respond to a greater range of regulatory stimuli.
* synthesize proteins for thousands of different functions.
* work in synchrony thanks to cyclic AMP and prostaglandins.
+ Secretion: Physiology

Fetal cell
* can also provide benefits to mothers, migrating to damaged tissue and repairing it.
* provide special advantages as cell lines because of their rapid growth and adaptability.
* thrive in a Parkinsonian brain.

Fewer cell
* are killed, thus there greater risk that abnormal cells can divide and spur cancer
  - produced, they migrate larger distances and take longer to mature
* dividing in the growth plates of bones mean that the bones grow more slowly.