Podcast
Questions and Answers
What process involves the movement of materials against their concentration gradient using energy?
What process involves the movement of materials against their concentration gradient using energy?
- Facilitated diffusion
- Diffusion
- Passive transport
- Active transport (correct)
Which pump is responsible for moving 3 sodium ions out of the cell for every 2 potassium ions it moves in?
Which pump is responsible for moving 3 sodium ions out of the cell for every 2 potassium ions it moves in?
- Chloride pump
- Sodium-potassium pump (correct)
- Calcium pump
- Hydrogen pump
What is the term for the process of engulfing large particles by white blood cells?
What is the term for the process of engulfing large particles by white blood cells?
- Exocytosis
- Pinocytosis
- Phagocytosis (correct)
- Receptor-mediated endocytosis
What is the main function of the vesicles in exocytosis?
What is the main function of the vesicles in exocytosis?
Which process specifically involves proteins recognizing hormones for cellular uptake?
Which process specifically involves proteins recognizing hormones for cellular uptake?
What term describes the shrinking of plant cells when water leaves, causing the cell membrane to pull away from the cell wall?
What term describes the shrinking of plant cells when water leaves, causing the cell membrane to pull away from the cell wall?
In which type of solution does plasmolysis occur for plant cells?
In which type of solution does plasmolysis occur for plant cells?
What is the movement of molecules down the concentration gradient called?
What is the movement of molecules down the concentration gradient called?
What is formed whenever there is a difference in concentration between one place and another?
What is formed whenever there is a difference in concentration between one place and another?
What is the term for the process where a solute dissolves to form a solution?
What is the term for the process where a solute dissolves to form a solution?
Which process involves the movement of substances across membranes using energy?
Which process involves the movement of substances across membranes using energy?
What is the term for the diffusion of water across a selectively permeable membrane?
What is the term for the diffusion of water across a selectively permeable membrane?
What type of solution has a lower concentration of molecules outside the cell compared to inside?
What type of solution has a lower concentration of molecules outside the cell compared to inside?
What process do white blood cells use to engulf and destroy bacteria?
What process do white blood cells use to engulf and destroy bacteria?
When the concentration of a solute is the same throughout a system, what has been reached?
When the concentration of a solute is the same throughout a system, what has been reached?
What occurs when water inside a plant cell pushes against the cell wall?
What occurs when water inside a plant cell pushes against the cell wall?
What process does glucose primarily use to enter cells rapidly?
What process does glucose primarily use to enter cells rapidly?
Phagocytosis, pinocytosis, and exocytosis are categorized under which type of transport?
Phagocytosis, pinocytosis, and exocytosis are categorized under which type of transport?
What is the term for the shrinking of a plant cell membrane away from the cell wall in a hypertonic solution?
What is the term for the shrinking of a plant cell membrane away from the cell wall in a hypertonic solution?
Which type of proteins extend through the cell membrane and are known for facilitating transport?
Which type of proteins extend through the cell membrane and are known for facilitating transport?
What is the term for the swelling and bursting of animal cells in a hypotonic solution?
What is the term for the swelling and bursting of animal cells in a hypotonic solution?
What process occurs when oxygen molecules move from the air sacs in the lungs into the blood?
What process occurs when oxygen molecules move from the air sacs in the lungs into the blood?
Which process explains why your fingers look like prunes after sitting in the bathtub for a long time?
Which process explains why your fingers look like prunes after sitting in the bathtub for a long time?
When a student nearby is emanating an odor after gym class, which process is primarily responsible for this observation?
When a student nearby is emanating an odor after gym class, which process is primarily responsible for this observation?
What is the correct explanation for why gargling with salt water can relieve a sore throat?
What is the correct explanation for why gargling with salt water can relieve a sore throat?
Why do slugs shrivel up when salt is sprinkled on them?
Why do slugs shrivel up when salt is sprinkled on them?
How does diffusion relate to concentration gradients?
How does diffusion relate to concentration gradients?
What correctly describes the net movement of sugar molecules if a cell is placed in a 1% sugar solution surrounded by a 3% sugar solution?
What correctly describes the net movement of sugar molecules if a cell is placed in a 1% sugar solution surrounded by a 3% sugar solution?
In diffusion, do cells utilize energy to move molecules?
In diffusion, do cells utilize energy to move molecules?
What is the composition of the heads of a phospholipid?
What is the composition of the heads of a phospholipid?
Which statement accurately describes the phospholipid bilayer?
Which statement accurately describes the phospholipid bilayer?
What does the fluid mosaic model describe?
What does the fluid mosaic model describe?
What type of molecules can pass through the cell membrane easily?
What type of molecules can pass through the cell membrane easily?
Why is diffusion classified as a passive process?
Why is diffusion classified as a passive process?
How many fatty acid chains are present in a phospholipid?
How many fatty acid chains are present in a phospholipid?
What movement drives molecules during diffusion?
What movement drives molecules during diffusion?
Which type of molecules are not able to pass easily through the phospholipid bilayer?
Which type of molecules are not able to pass easily through the phospholipid bilayer?
What will happen to a saltwater fish placed in a freshwater aquarium?
What will happen to a saltwater fish placed in a freshwater aquarium?
During osmosis, water moves from areas of __________ to areas of __________.
During osmosis, water moves from areas of __________ to areas of __________.
In the context of osmosis, what is a selectively permeable membrane?
In the context of osmosis, what is a selectively permeable membrane?
What is the primary factor driving the process of diffusion?
What is the primary factor driving the process of diffusion?
Which statement is true regarding the movement of water in osmosis?
Which statement is true regarding the movement of water in osmosis?
If there is more solute outside of a cell than inside, water will:
If there is more solute outside of a cell than inside, water will:
What occurs when a cell is placed in an isotonic solution?
What occurs when a cell is placed in an isotonic solution?
Why is osmosis crucial for cells?
Why is osmosis crucial for cells?
Flashcards
Plasmolysis
Plasmolysis
The shrinking of a plant cell when it loses water, causing the cell membrane to pull away from the cell wall.
Hypertonic Solution
Hypertonic Solution
A solution with a higher concentration of solutes than the cell's cytoplasm.
Osmotic Pressure
Osmotic Pressure
The force that pushes water across a semi-permeable membrane. It increases as the concentration of solutes increases.
Crenation
Crenation
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Isotonic Solution
Isotonic Solution
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Solute
Solute
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Diffusion
Diffusion
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Osmosis
Osmosis
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Concentration
Concentration
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Passive Transport
Passive Transport
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Isotonic
Isotonic
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Hypotonic
Hypotonic
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Hypertonic
Hypertonic
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Active Transport
Active Transport
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Concentration gradient
Concentration gradient
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Sodium-potassium pump
Sodium-potassium pump
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Endocytosis
Endocytosis
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Moving down a concentration gradient
Moving down a concentration gradient
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Carrier protein shape change
Carrier protein shape change
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Active Transport and ATP
Active Transport and ATP
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Active Transport and Concentration Gradient
Active Transport and Concentration Gradient
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Selectively Permeable Membrane
Selectively Permeable Membrane
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Solute Movement in Diffusion
Solute Movement in Diffusion
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Water Movement in Osmosis
Water Movement in Osmosis
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Cell Membrane Structure
Cell Membrane Structure
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Phospholipid Head and Tail Properties
Phospholipid Head and Tail Properties
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Phospholipid Composition
Phospholipid Composition
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Fluid Mosaic Model
Fluid Mosaic Model
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Cell membrane selectively permeable
Cell membrane selectively permeable
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Simple Diffusion
Simple Diffusion
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Kinetic energy in diffusion
Kinetic energy in diffusion
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Study Notes
Active Transport Worksheet
- Active transport requires energy, unlike passive transport
- Active transport moves molecules against the concentration gradient
- Active transport moves molecules from a low concentration to a high concentration
- The energy needed for active transport is ATP
- Exocytosis means substances are moved out of the cell
- Endocytosis means substances are moved into the cell
Additional Information
- Endocytosis is the process of taking in large molecules into a cell
- Exocytosis is the process of releasing substances from a cell
- Phagocytosis is a type of endocytosis used to engulf large particles (e.g., food)
- Pinocytosis is a type of endocytosis used to engulf fluids or dissolved molecules
- Diagrams show processes of endocytosis and exocytosis
- Questions and answers regarding osmosis, active transport, and passive transport, and their relationships, are also present
- Active and passive transport comparisons are given
- Osmosis is the movement of water across a membrane
- Hypertonic solutions have a higher concentration of solutes outside the cell
- Hypotonic solutions have a lower concentration of solutes outside the cell
- Isotonic solutions have the same concentration of solutes inside and outside the cell
- Diagrams of isotonic, hypertonic, and hypotonic environments for both animal and plant cells are shown
- Processes of diffusion and osmosis are included
Cellular Transport Review
- Hypertonic: Greater solute concentration outside the cell
- Hypotonic: Lower solute concentration outside the cell
- Isotonic: Equal solute concentration inside and outside the cell
- Osmotic pressure causes swelling/bursting in animal cells (cytolysis)
- Plasmolysis: Shrinking of plant cells in a hypertonic solution
- Diagrams of cells in different solutions are included
- Diffusion is the movement of molecules from high to low concentration
- Osmosis is the diffusion of water across a selectively permeable membrane
- Transportation terms definitions and descriptions are present
Cell Membrane
- Cell membranes are flexible and allow organisms to move
- Homeostasis is a balanced internal condition in (cells)
- Cell membranes maintain homeostasis by controlling what enters and leaves the cell
- Cell membranes are selectively permeable allowing some molecules through but not others.
- Homeostasis is also known as equilibrium
Additional Points
- Lipid bilayer composition of the cell membranes is discussed
- Examples of molecules that can easily diffuse across cell membranes (e.g., oxygen, carbon dioxide)
- Processes of simple diffusion, facilitated diffusion, active transport, osmosis, endocytosis, and exocytosis are presented
- Active transport, an example of which is the Na+-K+ pump, uses cellular energy to move substances against their concentration gradient.
- Endocytosis is the taking in of material by cell membrane infoldings
- Exocytosis involves the release of materials from cell
- Types of endocytosis, including phagocytosis and pinocytosis, are outlined
- Some molecules only pass through cell membranes with help of protein channels.
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Description
This quiz covers the concepts of active and passive transport mechanisms in cells. Students will explore how active transport differs from passive transport, including the roles of ATP, exocytosis, and endocytosis. Various types of endocytosis are also discussed, alongside diagrams and comparative questions.
