Membrane Bound vs Bilayer membrane

[mkhan27]

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This is basic Gen Bio that I have completely forgotten again. Someone help. I am confused about the difference between organelles that are "membrane bound" and those that have a "bilayer membrane". Are they both the same thing?

Does membrane bound mean they have a membrane and bilayer mean they have a double membrane. Also, are mitochondria, chloroplast, and nuclei the only organelles that have a bilayer membrane. Are there anymore??? Also, what would be some membrane bound organelles?

Thanks

 

[baywatch123]

Source: http://en.wikipedia.org/wiki/Biological_membrane

Distinct types of membranes also create intracellular organelles: endosome; smooth and rough endoplasmic reticulum; sarcoplasmic reticulum; Golgi apparatus; lysosome; mitochondrion (inner and outer membranes); nucleus (inner and outer membranes); peroxisome; vacuole; cytoplasmic granules; cell vesicles (phagosome, autophagosome, clathrin-coated vesicles, COPI-coated and COPII-coated vesicles) and secretory vesicles (including synaptosome, acrosomes, melanosomes, and chromaffin granules). Different types of biological membranes have diverse lipid and protein compositions. The content of membranes defines their physical and biological properties. Some components of membranes play a key role in medicine, such as the efflux pumps that pump drugs out of a cell.