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Questions and Answers
What is the main function of hydrophilic heads in the phospholipid bilayer of a cell membrane?
What is the main function of hydrophilic heads in the phospholipid bilayer of a cell membrane?
- To provide a non-polar surface for lipid molecules
- To facilitate the transport of hydrophobic molecules
- To act as a receptor for signaling molecules
- To interact with water molecules and form the outer layer of the membrane (correct)
What type of transport occurs when a cell engulfs a solid particle, forming a vesicle?
What type of transport occurs when a cell engulfs a solid particle, forming a vesicle?
- Osmosis
- Pinocytosis
- Phagocytosis (correct)
- Exocytosis
What is the term for the movement of water from an area of high water potential to an area of low water potential through a partially permeable membrane?
What is the term for the movement of water from an area of high water potential to an area of low water potential through a partially permeable membrane?
- Passive transport
- Diffusion
- Active transport
- Osmosis (correct)
What is the process by which a cell secretes substances out of the cell through vesicle fusion with the plasma membrane?
What is the process by which a cell secretes substances out of the cell through vesicle fusion with the plasma membrane?
What is the main adaptation of the mammalian lung that allows for rapid gaseous exchange?
What is the main adaptation of the mammalian lung that allows for rapid gaseous exchange?
What is the term for the movement of molecules from an area of high concentration to an area of low concentration, resulting in uniform distribution?
What is the term for the movement of molecules from an area of high concentration to an area of low concentration, resulting in uniform distribution?
What is the primary function of channel proteins in facilitated diffusion?
What is the primary function of channel proteins in facilitated diffusion?
What is the primary mechanism by which oxygen enters the blood from the air spaces of the alveoli?
What is the primary mechanism by which oxygen enters the blood from the air spaces of the alveoli?
What is the function of the pleural membranes in the mammalian lung?
What is the function of the pleural membranes in the mammalian lung?
What is the primary function of cilia in the mammalian lung?
What is the primary function of cilia in the mammalian lung?
What is the primary mechanism by which carbon dioxide is removed from the blood?
What is the primary mechanism by which carbon dioxide is removed from the blood?
What is the primary function of carrier proteins in facilitated diffusion?
What is the primary function of carrier proteins in facilitated diffusion?
What is the primary adaptation of the mammalian lung for rapid gaseous exchange?
What is the primary adaptation of the mammalian lung for rapid gaseous exchange?
What is the primary mechanism by which ions move through channel proteins?
What is the primary mechanism by which ions move through channel proteins?
What is the primary function of the diaphragm in ventilation?
What is the primary function of the diaphragm in ventilation?
What is the primary benefit of a large surface area of the alveoli?
What is the primary benefit of a large surface area of the alveoli?
What is the primary function of carrier proteins in membrane transport?
What is the primary function of carrier proteins in membrane transport?
According to Fick's Law of Diffusion, what is the rate of diffusion directly proportional to?
According to Fick's Law of Diffusion, what is the rate of diffusion directly proportional to?
What is the term for the movement of water molecules through a partially permeable membrane from an area of high concentration to an area of low concentration?
What is the term for the movement of water molecules through a partially permeable membrane from an area of high concentration to an area of low concentration?
What is the primary function of the fluid mosaic model of membrane structure?
What is the primary function of the fluid mosaic model of membrane structure?
What is the term for the process by which cells take in molecules from the surrounding environment?
What is the term for the process by which cells take in molecules from the surrounding environment?
What adaptation of the mammalian lung allows for rapid gaseous exchange?
What adaptation of the mammalian lung allows for rapid gaseous exchange?