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Questions and Answers
Explain the difference between passive transport and active transport.
Explain the difference between passive transport and active transport.
Passive transport doesn't require cell energy and active transport does.
What provides the energy that drives the sodium potassium pump?
What provides the energy that drives the sodium potassium pump?
ATP
What functions do carrier proteins perform in active transport?
What functions do carrier proteins perform in active transport?
They are involved in facilitated diffusion.
Explain the difference between pinocytosis and phagocytosis.
Explain the difference between pinocytosis and phagocytosis.
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Describe the steps involved in exocytosis.
Describe the steps involved in exocytosis.
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How do endocytosis and exocytosis differ?
How do endocytosis and exocytosis differ?
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Study Notes
Passive vs. Active Transport
- Passive Transport: Movement of substances across a membrane without the use of cellular energy.
- Active Transport: Movement of substances against a concentration gradient, requiring energy in the form of ATP.
Sodium-Potassium Pump
- Energy Source: Utilizes ATP to pump sodium (Na⁺) out of the cell and potassium (K⁺) into the cell.
Carrier Proteins in Active Transport
- Facilitate the transport of substances across cell membranes.
- Engage in processes like facilitated diffusion to move molecules that cannot directly cross the lipid bilayer.
Pinocytosis vs. Phagocytosis
- Pinocytosis: A form of endocytosis that involves the uptake of fluids or small solutes.
- Phagocytosis: A type of endocytosis for ingesting large particles or entire cells.
Steps of Exocytosis
- Process: A vesicle containing substances moves toward the cell membrane.
- Fusion and Release: The vesicle fuses with the membrane and releases its contents outside the cell.
Endocytosis vs. Exocytosis
- Endocytosis: Involves the transport of substances into the cell, forming a vesicle around the ingested material.
- Exocytosis: Refers to the process of expelling materials from the cell, where substances are packed into vesicles that fuse with the cell membrane.
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Description
This quiz covers key concepts from Zoe Bisco's Science chapter on cell transport mechanisms. You will explore the differences between passive and active transport, the role of ATP, and the functions of carrier proteins in facilitated diffusion. Test your understanding of these essential scientific principles!
