Endocytosis and Exocytosis quiz Flashcards

Endocytosis is the process by which a cell engulfs macromolecules by the cell membrane, allowing entry into the cell via a lipid vesicle.

The three main types of endocytosis are phagocytosis, pinocytosis, and receptor-mediated endocytosis.

Phagocytosis is commonly known as cell eating because it involves the engulfment of large solid materials.

Pinocytosis is commonly known as cell drinking because it involves the engulfment of small liquid materials.

Receptor-mediated endocytosis is a specific form of pinocytosis that uses receptor proteins to specifically bind and internalize certain molecules.

Receptors are proteins that have a specific binding attraction to certain molecules, facilitating their entry into the cell.

Exocytosis is the process by which vesicles fuse with the cell membrane to release their contents into the extracellular space.

Examples of molecules that can undergo exocytosis include hormones, neurotransmitters, and digestive enzymes.

The EX in exocytosis helps you remember that it involves the exit of materials from the cell into the extracellular space.

Endocytosis involves the cell taking in substances, while exocytosis involves the cell expelling substances.

Vesicles fuse with the cell membrane to release their contents outside the cell during exocytosis.

The lipid vesicle encloses the engulfed material, allowing it to be transported into the cell.

The cell membrane engulfs macromolecules to form a vesicle that transports them into the cell.

Phagocytosis allows cells to ingest large particles, such as bacteria, which can be broken down and used by the cell.

Receptor-mediated endocytosis is a specialized form of pinocytosis that involves specific receptor proteins to internalize certain molecules.

Endocytosis allows large molecules to enter the cell by engulfing them with the plasma membrane.

The three types of endocytosis are phagocytosis, pinocytosis, and receptor-mediated endocytosis.

Pinocytosis is non-selective and involves the cell taking in liquid substances, while receptor-mediated endocytosis is selective and uses receptors to recognize specific substances.

Receptor proteins recognize and bind to specific substances, allowing the cell to selectively take in those substances.

Large biomolecules are transported via bulk transport mechanisms such as endocytosis and exocytosis.

Bulk transport refers to the movement of large molecules across the cell membrane through processes like endocytosis and exocytosis.

Phagocytosis is commonly referred to as 'cell eating.'

Pinocytosis is commonly referred to as 'cell drinking.'

The term 'endocytosis' literally means 'into the cell.'

The term 'exocytosis' literally means 'out of the cell.'

Phagocytosis involves the cell membrane wrapping around a particle to form a vesicle.

Exocytosis allows the cell to expel large molecules by fusing vesicles with the plasma membrane.

Vesicles transport large molecules into the cell during endocytosis and out of the cell during exocytosis.

The cell membrane engulfs large molecules to form vesicles that transport them into the cell during endocytosis.