WK 2: Exocytosis & Endocytosis

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Which process uses energy and ATP to move substances out of the cell?

Phagocytosis
Pinocytosis
Exocytosis (correct)
Endocytosis

What is the primary function of the Golgi apparatus in protein synthesis?

Folding of proteins
Glycosylation of proteins
Protein sorting and modification (correct)
Translation of mRNA

What type of endocytosis involves the engulfment of large molecules?

Pinocytosis
Glycosylation
Receptor-mediated endocytosis
Phagocytosis (correct)

What is the fate of proteins translated on ribosomes dependent on?

Their function (C) Signup and view all the answers

What is the purpose of receptor-mediated endocytosis?

To internalize specific molecules into the cell (D) Signup and view all the answers

What is the site of protein synthesis and folding in a cell?

Endoplasmic reticulum (B) Signup and view all the answers

What is the purpose of exocytosis?

To move substances out of the cell (A) Signup and view all the answers

What is the name of the process by which proteins are added to the cell membrane?

Protein insertion (D) Signup and view all the answers

What happens to the proteins in the Golgi apparatus?

They undergo further modification and sorting (A) Signup and view all the answers

Which process involves the movement of substances out of the cell, using energy from ATP?

Exocytosis (B) Signup and view all the answers

What type of endocytosis involves the ingestion of large molecules and particles?

Phagocytosis (B) Signup and view all the answers

What is the term for the fusion of vesicles with the plasma membrane, resulting in the release of their contents?

Exocytosis (B) Signup and view all the answers

Which type of cell is responsible for secreting insulin?

Beta-cells of the pancreas (C) Signup and view all the answers

What is the term for the uptake of small molecules and fluid from the environment?

Pinocytosis (A) Signup and view all the answers

Which toxins inhibit exocytosis?

Botulinum and tetanus toxins (A) Signup and view all the answers

What is the term for the process by which cells take in molecules from the environment?

Endocytosis (D) Signup and view all the answers

Which type of cell is responsible for secreting histamine?

Mast cells (D) Signup and view all the answers

What is the term for the targeting of vesicles to specific areas of the cell membrane?

Active zones (D) Signup and view all the answers

What is the purpose of the low pH in early endosomes?

To promote the dissociation of the substrate from the receptor (D) Signup and view all the answers

Which type of endocytosis involves the uptake of specific molecules?

Receptor-mediated endocytosis (A) Signup and view all the answers

What is the result of genetic disorders that stop the uptake of LDL particles by endocytosis?

Atherosclerotic plaques (D) Signup and view all the answers

What is the purpose of proton pumps in the membrane surface of early endosomes?

To create a low pH environment (C) Signup and view all the answers

What is the term for the process of 'cell drinking'?

Pinocytosis (C) Signup and view all the answers

What is the main difference between early endosomes and late endosomes?

The type of cargo being transported (C) Signup and view all the answers

What is the name of the protein involved in receptor-mediated endocytosis?

Clathrin (D) Signup and view all the answers

What is the result of the fusion of a late endosome with a lysosome?

The degradation of cargo (D) Signup and view all the answers

What is the term for the process by which a vesicle fuses with the plasma membrane to release its contents?

Exocytosis (A) Signup and view all the answers

What is the name of the disease that is an example of a lysosomal storage disorder?

Gaucher disease (A) Signup and view all the answers