AP BIOLOGY

Detailed explanation-1: -Endocytosis. Endocytosis (endo = internal, cytosis = transport mechanism) is a general term for the various types of active transport that move particles into a cell by enclosing them in a vesicle made out of plasma membrane.

Detailed explanation-2: -A small membrane sac used to transport substances during exocytosis & endocytosis = VESICLE 8.

Detailed explanation-3: -Exocytosis involves the passage of a vesicle from the endoplasmic reticulum or Golgi apparatus, through the cytoplasm to the cell membrane, where it fuses and releases its contents.

Detailed explanation-4: -Vesicle Transport Vesicles or other bodies in the cytoplasm move macromolecules or large particles across the plasma membrane. There are two types of vesicle transport, endocytosis and exocytosis (illustrated in Figure below). Both processes are active transport processes, requiring energy.

Detailed explanation-5: -Exocytosis is the fusion of secretory vesicles with the plasma membrane and results in the discharge of vesicle content into the extracellular space and the incorporation of new proteins and lipids into the plasma membrane.