A protein filament that projects from the surface of some prokaryotic cells
Short, moveable structures that project from the plasma membrane of some eukaryotic cells
This protein speeds up reactions at membranes
A ___________ electron microscope directs a beam of electrons back and forth across the surface of a specimen that has been coated with a thin layer of gold or other metal, the irradiated metal emits electrons and x-rays which are converted into an image
Small, membrane-enclosed sacs, formed by budding from other organelles or when a patch of plasma membrane sinks into the cytoplasm
Junctions that have closable channels that connect the cytoplasm of adjoining animal cells
Body/apparatus that modifies polypeptides and lipids, then packages the finished products into vesicles
Organelles specialized for photosynthesis these photosynthetic cells are found in plants and many protists
A _____________ electron microscope directs electrons through a thin specimen, and the specimen's internal details appear as shadows in the resulting image
The lipid bilayer consists mainly of __________, organized in such a way because the hydrophilic head interacts with water molecules and the hydrophobic tails do not interact with water
Type of energy-using protein that interacts with cytoskeletal elements to move the cell's parts or the whole cell
Organelles upon which polypepties are assembled
General term for a structure that carries out a special metabolic function inside a cell
Brings about movement of eukaryotic flagella and cilia
A fluid _________ model of a cell membrane is a two-dimensional fluid of mixed composition
A system of protein filaments found between the nucleus and plasma membrane
Enzyme filled that breaks down cellular debris and wastes
The cell _____ is rigid, permeable to water, surrounds the plasma membrane and protects the cell and supports its shape
This protein moves specific ions or polar molecules across a membrane
Membrane that is not actually a cell membrane because it does not consist of lipids, instead it is a sheet of fibrous material that structurally supports and organizes tissues
ER that makes lipids and breaks down carbohydrates and fatty acids