A region of the cytoplasm that is not enclosed in a membranous sac.
Lipid Belayer
Oily boundaries that preventes the free passage of wter-soluble substances across it.
Wavelenght
Is the distance from the peak of one wave to the peak behind it.
Electron microscopes
use magnetic lenses to bend and diffract beams of electrons which cannot be diffracted.
Transmission electron microscopes
electrons pass through a specimen and are used to make images of its internal details.
Scanning electron microscopes
direct a beam of electrons back and forth across a surface of a specimen.
Organelles
The nucelus and other membrane-bounded sacs.
Secretory pathway
Move new polypeptide chains for some ribosomes through rough ER and Golgi bodies.
Endocytic pathway
Moves ions and molecules into the cytoplasm.
Vesicles
Move substances from one organelles to the next in line.
Nuclear envelope
Double membrane system in which two lipid bilayers are pressed against each other.
Chromatin
The cell's collection of DNA and all proteins associated with it.
Chromosome
Is a double-stranded DNA molecule.
Peroxisomes
Hold enzymes that digest fatty acids, amino acids, and hydrogen peroxide.
Cell junctions
are molecular structures where a cel sends or recieves
Basal body
An oraganellles that started out as a centriole the source of a 9+2 array of microtubules in a cilium of flagellum.
Pseudopods
False feet used by the macrophages and amoebas.
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