### cell:

Plants cell
* contain all of the structure of animal cells with the addition of other structures.
* do contain cell walls.
* have a functionally unique cortical microtubule array.

Pole cell
* constitute the germ line for the next generation.
* migrate around the embryo, at first passively and then actively.

Positive cell
* adhere to the steel wool.
* stain brown.

Primary cell
* have a limited life span in culture.
* inhibit oncogene-dependent apoptosis.

### cell:

Prokaryotic cell
* Lack a nuclear envelope, cytoskeleton, cytoplasmic organelles.
* Most prokaryotic cells have additional structures
  - replicate by a process called binary fission
* are bacteria and eukaryotic cells make up all other organisms
  - enclosed by a protective cell wall
  - far simpler and smaller than eukaryotic cells
  - found in single-celled organisms, such as bacteria
  - quite different from eukaryotes
  - relatively simple
  - represent the most primitive life forms on earth
  - simpler than eukaryotic cells and have no membrane-bound organelles
* are smaller and simpler
  - smaller, and lack a nucleus and most eukaryote organelles
  - structurally much simpler than eukaryotic cells
  - the simplest systems that exhibit all of the signs of life
  - typically much smaller than eukaryotic cells
  - unicellular
* are usually much smaller than Eukaryotic and are less complex
* can have multiple plasma membranes.
* can reproduce asexually only through binary fission
  - either sexually and asexually
* contain a single compartment enclosed within the cell membrane.
* divide by binary fission
  - via binary fission
* have a less complex internal structure than eukaryotic cells
  - rigid, triple layer cell wall structure
  - single circular DNA chromosome
  - many more genes than a Eukaryotic cell
* have no internal membranes or cytoskeleton
  - nuclei, unlike Eukaryotic cells
  - separate compartment for the genetic material
  - true nucleus while eukaryotic cells have a true nucleus
* lack a nucleus and other membrane-bound organelles
  - the complex compartmentalization found in eukaryotic cells
* reproduce by a process called a. mitosis
  - that is called binary fission
  - commonly through binary fission
  - using binary fission , where the cell simply splits in half
* store chromosomal DNA inside their nuclei.
* tend to be small in size.
+ Cell, Cell reproduction

Receptor cell
* come in all different sizes and types.
* extract chemical signals from the environment through various filtering processes.

Reproductive cell
* are almost entirely protein.
* attach to nets that are mounted in the sea.
* develop in protected sex organs and the plant body has a waxy cuticle.
* have a single flagellum at their base.

Resistant cell
* grow more slowly than susceptible ones.
* grow, forming a bacterial colony.

Root cell
* expend energy during the night to pump mineral ions into the xylem.
* grow faster on the side where there is the smallest amounts of auxin.
* receive sugars from the leaves and also actively absorb salts from the soil.

Sclerenchyma cell
* are characterized by thickenings in their secondary walls
  - the principal supporting cells in plant parts that have ceased elongation
* have thick secondary walls strengthened by lignin.
* provide mechanical support and protection in mature plants.
* support the plant.

Secretory cell
* are devoid of cilia
  - most abundant in the seed kernels
  - often specialized and organized in groups to form glands
  - somatic cells
* produce the protective extracellular lining of the conducting airways.

Sensory cell
* More sensory cells mean better visual acuity.
* extend microvilli into the taste pore.
* generate electrical signals in response to external stimuli.

Sickled cell
* become stuck and form plugs in small blood vessels
  - trapped and are destroyed in the liver and spleen
* interfere with oxygen transport and blood flow.