Examlex
It has been discovered that some mRNAs have a signal that causes the ribosome to change its reading frame by backing up or moving ahead one base. Such a sequence is called _________.
Exocytosis
The active transport of materials out of the cell by fusion of cytoplasmic vesicles with the plasma membrane. Compare with endocytosis.
Plasma Membrane
The semipermeable membrane surrounding the cytoplasm of a cell, responsible for controlling the passage of substances in and out of the cell.
Vesicle
(vesicle) Any small sac, especially a small, spherical, membrane-enclosed compartment, within the cytoplasm.
Plasma Membranes
The lipid bilayer that surrounds a cell, separating its internal components from the external environment and mediating interactions with other cells and substances.
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