Podcast
Questions and Answers
What is exocytosis?
What is exocytosis?
What is osmosis?
What is osmosis?
Diffusion of water molecules through a selectively permeable membrane
What is active transport?
What is active transport?
The transport of particles which requires the use of energy
What is dynamic equilibrium?
What is dynamic equilibrium?
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What is endocytosis?
What is endocytosis?
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What is diffusion?
What is diffusion?
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Exocytosis is the transport of particles which does not require energy.
Exocytosis is the transport of particles which does not require energy.
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What is the structure most responsible for maintaining cell homeostasis?
What is the structure most responsible for maintaining cell homeostasis?
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The plasma membrane (cell membrane) is made up of an?
The plasma membrane (cell membrane) is made up of an?
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Which of the following is NOT a form of passive transport?
Which of the following is NOT a form of passive transport?
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Diffusion continues until?
Diffusion continues until?
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If a cell is placed in salt water, water leaves the cell by?
If a cell is placed in salt water, water leaves the cell by?
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A cell moves particles from a region of low concentration to a region of high concentration by?
A cell moves particles from a region of low concentration to a region of high concentration by?
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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.
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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.
