### body part | membrane bound dimer:

Cytochrome oxidase
* consists of two cytochromes and two copper atoms.
* is an enzyme used in metabolism
  - one of the enzymes essential for cell metabolism
  - the essential terminal enzyme of aerobic respiration from yeast to man
* membrane bound dimer.
* staining technique which preferentially stains metabolically active neurons.

### body part | membrane | basement body part:

Membrane
* Basement membrane surrounds each follicle
  - membranes have structures
* Most basement membranes have structures.

### body part | membrane | biological body part:

Membrane
* All biological membranes are selectively permeable
  - consist primarily of phospholipids and proteins
* All biological membranes contain both lipids and proteins
  - lipids as the major constituent
* Biological membranes are as fluid as salad oil
  - asymmetrical
  - capable of repairing small holes or tears that are made in the membrane
  - exhibit asymmetric organization
  - govern communication within and between cells
* Most biological membranes have quite different permeabilities for the biologically important ions.

### body part | membrane | cellular body part:

Membrane
* Cellular membrane have highly apolar inner volumes.
* Cellular membranes are fluid, which means that the lipids are able to move within the layers
  - facilitate osmosis
  - have diverse functions in the different regions and organelles of a cell

### body part | membrane | connective body part:

Membrane
* Connective membranes cover bones.
* Most connective membranes cover bones.
* Some connective membranes cover organs.

### body part | membrane | envelope body part:

Membrane
* Envelope membranes act as barriers.
* Most envelope membranes act as barriers.

### body part | membrane | fibrous body part:

Membrane
* Fibrous membranes cover bones
  - surfaces
* Most fibrous membranes cover bones

### body part | membrane | fluid body part:

Membrane
* Fluid membranes are suitable for rougher surfaces.
* Some fluid membranes cover spines.

### body part | membrane | inner body part:

Membrane
* Inner membrane contains folds called cristae
  - delicate lamina of loose fibrous tissue of low cellularity
* Inner membranes act as barriers
  - perform functions
* Most inner membranes act as barriers
* Some inner membranes protect camels.

### body part | membrane | outer body part:

Membrane
* Outer membrane is similar to the plasma membrane.
* Some outer membranes cover eyes.

### body part | membrane | permeable body part:

Membrane
* Most permeable membranes consist of layers.
* Permeable membranes separate dialysis fluid

### body part | membrane | porous body part:

Membrane
* Most porous membranes enclose cell organelles
* Porous membranes can separate molecules by size or due to chemical interaction with the surface.

### body part | membrane | protective body part:

Membrane
* Some protective membranes contain enzymes.
* Some protective membranes cover ears

### body part | membrane | thin body part:

Membrane
* Most thin membranes cover bones
* Some thin membranes cover eyes
  - small white spines
  - have refraction
  - protect eyes
  - protect the beaver's eyes when underwater