Podcast
Questions and Answers
Which structural component of the cell membrane is primarily responsible for forming a barrier to the passage of polar molecules?
Which structural component of the cell membrane is primarily responsible for forming a barrier to the passage of polar molecules?
- Carbohydrate chains
- Integral proteins
- Peripheral proteins
- Phospholipid tails (correct)
What is the primary role of cholesterol in the cell membrane?
What is the primary role of cholesterol in the cell membrane?
- To provide rigidity to the membrane. (correct)
- To facilitate the transport of ions.
- To attach peripheral proteins.
- To mark the cell for identification.
Facilitated diffusion requires energy input from the cell.
Facilitated diffusion requires energy input from the cell.
False (B)
Which of the following transport mechanisms is used to move large particles into a cell?
Which of the following transport mechanisms is used to move large particles into a cell?
In a hypotonic solution, what will happen to an animal cell?
In a hypotonic solution, what will happen to an animal cell?
The movement of water across a semipermeable membrane from an area of high water concentration to an area of low water concentration is called ______.
The movement of water across a semipermeable membrane from an area of high water concentration to an area of low water concentration is called ______.
Which of the following accurately describes active transport?
Which of the following accurately describes active transport?
Diffusion is an active process that requires the input of energy.
Diffusion is an active process that requires the input of energy.
Match each transport mechanism with its correct description:
Match each transport mechanism with its correct description:
Explain how the hydrophobic and hydrophilic properties of phospholipids contribute to the structure and function of the cell membrane.
Explain how the hydrophobic and hydrophilic properties of phospholipids contribute to the structure and function of the cell membrane.
Which of the following is the primary function of the cell membrane?
Which of the following is the primary function of the cell membrane?
What type of molecules can easily pass through a cell membrane via simple diffusion?
What type of molecules can easily pass through a cell membrane via simple diffusion?
A cell placed in a hypertonic solution will gain water.
A cell placed in a hypertonic solution will gain water.
What is the role of transport proteins in facilitated diffusion?
What is the role of transport proteins in facilitated diffusion?
The process by which cells release substances to the external environment through vesicles is called ______.
The process by which cells release substances to the external environment through vesicles is called ______.
Which of these processes requires the use of ATP?
Which of these processes requires the use of ATP?
Explain how changes in temperature can affect the fluidity of the cell membrane.
Explain how changes in temperature can affect the fluidity of the cell membrane.
Match each type of solution with its effect on a cell:
Match each type of solution with its effect on a cell:
The sodium-potassium pump is an example of facilitated diffusion.
The sodium-potassium pump is an example of facilitated diffusion.
The difference in concentration of a substance across a space is called the concentration ______.
The difference in concentration of a substance across a space is called the concentration ______.
Flashcards
Cell Membrane
Cell Membrane
The structure that controls what enters and exits the cell.
Diffusion
Diffusion
The movement of molecules from an area of high concentration to an area of low concentration.
Osmosis
Osmosis
The diffusion of water across a semi-permeable membrane from an area of high water concentration to an area of low water concentration.
Facilitated Diffusion
Facilitated Diffusion
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Active Transport
Active Transport
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Homeostasis
Homeostasis
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Study Notes
- The quiz on Wednesday, April 2nd covers homeostasis.
Cell Membrane
- Cell membrane structure and function will be tested.
Transport
- Diffusion, osmosis, facilitated diffusion, and active transport will be tested.
Quiz Structure
- The quiz includes multiple-choice, matching/fill-in-the-blank questions.
- There will be 25 multiple choice questions.
- There will be 15 matching/fill-in-the-blank questions.
- Osmosis and diffusion have a section of 7 questions.
- Passive and active transport will be assessed in 5 questions.
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