### body part:

Membrane
* All membranes contain lipids and proteins
  - phospholipids and proteins
  - proteins and lipid
* Most membranes act as barriers
  - selective barriers
  - add warmth
  - are very delicate in nature
  - come into contact
* Most membranes consist of fibrous materials
  - layers
* Most membranes contain receptors
  - water
* Most membranes cover bones
  - surfaces
  - detect vibration
* Most membranes enclose cell organelles
  - extend from sides
  - facilitate osmosis
  - fill with fluid
  - form narrow channels
* Most membranes have chlorophyll
  - concentration
  - high permeability
  - low permeability
  - offer protection
  - perform functions
  - prevent penetrations
* Most membranes protect internal organs
* Most membranes provide barriers
  - mechanical barriers
  - require energy
  - secrete digestive enzymes
* Most membranes surround coeloms
  - genetic materials
  - tendons
* Some membranes absorb nutrients.
* Some membranes act as bridges
  - windshield wipers
  - affect ability
  - are located in reptiles
  - consist of phospholipids
* Some membranes contain chlorophyll
  - cholesterol
  - green pigment
  - nitrogen
  - photosynthetic pigment
  - receptor proteins
  - sodium
* Some membranes contain specific proteins
  - unique pigment
* Some membranes cover abdominal organs
  - eyes
  - heads
  - hearts
  - small white spines
  - walls
  - with sand
  - fill with cytoplasm
  - generate electricity
* Some membranes have layers
  - refraction
  - surface layers
  - lead to death
  - line outer walls
  - maintain conditions
  - produce toxins
* Some membranes protect camels
  - embryos
  - fetuses
  - regulate exchanges
* Some membranes remove sand
  - waste
  - result in leakage
* Some membranes secrete hormones
  - watery fluid
* Some membranes stretch between legs
  - tails
* Some membranes support growth
  - tubes
* Some membranes surround brains
  - capillaries
  - eukaryotic organelles
  - lungs
  - lysosomes
  - nuclei
  - stromas
  - testes
  - vesicles
* act as barriers to compartmentalize important regions of cells
* also enclose several of the other internal parts found in a eukaryotic cell
  - help move materials into and Out of cells
* are active components of biological systems.
* are also dynamic, constantly adapting to changing environmental conditions
  - different conditions
  - bifacial with distinct inside and outside faces
  - dynamic, fluid structures
* are essential for cells to survive and function
  - to all life on earth
  - exceedingly thin, on the order of a few nanometers
  - fluid and constantly changing
  - highly asymmetric structures whose two leaflets have very different properties
  - impermeable to proteins
  - in common dynamic flux, pinch off and move to other regions
  - like a house
* are located in animals
  - fresh eggs
  - more than just grease bubbles
  - selectively permeable a
  - sheets
* are the fatty barriers that surround every cell and many structures within cells
  - surfaces upon which life's myriad reactions occur
  - thin walls
* are used for filtration
  - separates
  - very good at rejection high molecular weight compounds and multivalent ions
  - vital because they separate the cell from the outside world
* become swollen and congested as increased blood passes through the nasal turbinate.
* can also separate the contents of an organelle from the cell cytoplasm.
* compose of cellulose.
* composed of amphiphilic molecules occur both in soap solutions and in biological cells.
* contain both proteins and lipids
* contains u isotype molecules.
* do have small openings but also have an electrical charge which helps reject some ions.
* enclose all cells and all intracellular organelles
* filter blood.
* fluoresce very little at infrared wavelengths.
* form barriers
* generally have adequate tensile strength.
* have a variety of uses
  - many different properties which affect the performance of the filter in applications
  - numerous functions
* help create a pleasant body climate, as they ensure perspiration passes unhindered.
* includes sections.
* is an artifact
* made of polymers or ceramics are available for high temperature applications.
* obscure the chorionic plate.
* often contain steroids, a lipid having a structure very different from oils.
* participate actively in a host of processes essential for a biological cell.
* play an important role in the physiology of plants.
* present barriers.
* produce high quality effluent for water reuse or discharge.
* provide a physical barrier for the removal of microscopic organisms and sediment
* remove contaminants by controlling pore size.
* separate dialysis fluid
  - interiors
* serve as a locus for biochemical reactions
  - diverse functions in eukaryotic and prokaryotic cells
* solidify if the temperature decreases to a critical point.
* starts to invaginate to form coated vesicle.
* switches, on the other hand, have a very small number of parts.
* tend to protect the uterus and the fluid inside during pregnancy.
* thus form non-covalent cooperative structures.
* vary in basic material and structure.