Cell Communication (Vesicular Transport) and the Extracellular Matrix

Question 1

Name the three (3) types of endocytosis (how molecules or structures get into the cell)

• R_______-M_______ E________
• P________ greek “to eat”
• P________greek “to drink”

Answer 1

Receptor-Mediated Endocytosis
Phagocytosis - Phago - Greek ‘to eat’
Pinocytosis (Bulk-Phase Endocytosis) - Pino - Greek ‘to drink’

Question 2

What is the function of Receptor-Mediated Endocytosis, Phagocytosis and Pinocytosis ?

Answer 2

Receptor-Mediated Endocytosis - transporting molecules into the intracellular environment after binding them to certain receptors on the outside of the cell

Phagocytosis - a cell (phagocyte) engulfs large, solid particles, such as a microbe, digests it and expels the waste product.

Pinocytosis - tiny droplets of ECF (extracellular fluid) are taken into a cell

Question 3

What are the two types of Exocytosis?

1. R_________
2. C_________

Answer 3

regulated and constitutive

Question 4

In __________ exocytosis, secretory materials are stably accumulated in secretory vesicles as storage sites.

In __________ exocytosis, secretory materials are continuously released.

Answer 4

regulated, constitutive

Question 5

_____cytosis is the process by which macromolecules are transported through a cell. They enter the cell in vesicles via endocytosis, move across the cell, and then exit via exocytosis.

Answer 5

Transcytosis