Cell Transport Review Flashcards

Questions and Answers

What is exocytosis?

Large wastes or cell products are released from inside to outside a cell (correct)

Movement of any particles from an area of higher concentration to one of lower concentration

Large particles are surrounded by the membrane and taken into the cell

The transport of particles which does not require energy

What is osmosis?

Diffusion of water molecules through a selectively permeable membrane

What is active transport?

The transport of particles which requires the use of energy

What is dynamic equilibrium?

A state reached when particles continue to move but in equal amounts in and out of the cell Signup and view all the answers

What is endocytosis?

Large particles are surrounded by the membrane and taken into the cell Signup and view all the answers

What is diffusion?

Movement of any particles from an area of higher concentration to one of lower concentration Signup and view all the answers

Exocytosis is the transport of particles which does not require energy.

False Signup and view all the answers

What is the structure most responsible for maintaining cell homeostasis?

Plasma membrane Signup and view all the answers

The plasma membrane (cell membrane) is made up of an?

Phospholipid bilayer Signup and view all the answers

Which of the following is NOT a form of passive transport?

Endocytosis Signup and view all the answers

Diffusion continues until?

Equilibrium is reached Signup and view all the answers

If a cell is placed in salt water, water leaves the cell by?

Osmosis Signup and view all the answers

A cell moves particles from a region of low concentration to a region of high concentration by?

Active transport Signup and view all the answers

Study Notes

Cell Transport Mechanisms

Exocytosis: Process where large wastes or products are expelled from a cell into the external environment.
Osmosis: Special type of diffusion focusing specifically on the movement of water through a selectively permeable membrane.
Active Transport: Movement of particles against their concentration gradient, requiring cellular energy.
Dynamic Equilibrium: Condition where particles are evenly distributed, moving in and out of the cell at equal rates, maintaining stability.

Types of Transport

Endocytosis: Method for transporting large particles into a cell by enveloping them with the cell membrane.
Diffusion: The natural tendency of particles to move from an area of higher concentration to an area of lower concentration until equilibrium is reached.
Passive Transport: Includes processes such as diffusion, osmosis, and facilitated diffusion that do not require energy (ATP).

Specific Concepts

Plasma Membrane: Essential structure for maintaining cell homeostasis, composed of a phospholipid bilayer that regulates entry and exit of substances.
Equilibrium: Occurs when diffusion of particles continues until concentrations inside and outside the cell are balanced.
Impact of Salt Water: Cells placed in salt water lose water through osmosis, leading to potential dehydration and shrinkage.

Distinctions in Transport

Active vs. Passive Transport: Active transport requires energy for moving particles from low to high concentration, while passive transport occurs naturally along the concentration gradient without energy use.
Types of Passive Transport: Facilitated diffusion, diffusion, and osmosis are forms of passive transport; endocytosis is NOT a form of passive transport due to its energy requirement.

Description

Test your knowledge of cell transport mechanisms with this set of flashcards. Covering key concepts such as exocytosis, osmosis, active transport, and dynamic equilibrium, these flashcards are essential for mastering cell biology. Perfect for students looking to reinforce their understanding of cellular processes.