[ GEN BIO ] Lesson 16: Exocytosis and Endocytosis

Bulk Transport

is termed such because it involves transporting bulk or large molecules.

• Exocytosis

• Endocytosis

• Pinocytosis

• Phagocytosis

• (Receptor-mediated) endocytosis

Types of Bulk or Vesicular Transport (5)

Exocytosis

This process uses intracellular vesicles and hormones,neurotransmitters, and digestive enzymes.

• Constitutive

• Regulated

Types of exocytosis (2)

Constitutive

It transports molecules outside the cell through vesicles.

Constitutive

This process transports molecules outside the cell then the vesicle fuses with the plasma membrane.

Regulated

It transports molecules outside the cell because of triggered signals.

Regulated

In this process, the molecule will be transported outside as a response to the signal for the cell.

Endocytosis

The vesicles bud inward and later invaginates to envelope the substances; The vesicles delivers its content.

Phagocytosis

It functions as a defense and repair for the human body.

Pinocytosis

it functions for ingestion.

Receptor-mediated endocytosis

It involves the regulation of molecules into the cell.

Receptor-mediated endocytosis

It is involved in the uptake, transfer, and exchange of substances between cells.

Exocytosis

is a process where molecules EXit the membrane.

Endocytosis

is a process wherein molecules are ENgulfed by the cell.

Pinocytosis

occurs when vesicles form around a liquid or around very small particles.

Receptor-mediated endocytosis

because it uses a receptor protein to recognize compatible molecules which they bring into the cell.

Pseudopodia

In the process of phagocytosis, the cell engulfs the particle by wrapping around extensions called _______ .

Vacuoles

In phagocytosis, pseudopodia then packs it within a membrane-enclosed sac called _____.