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Questions and Answers
What triggers the release of phosphate from the protein in active transport?
What triggers the release of phosphate from the protein in active transport?
- Release of ATP
- Loss of extracellular K+
- Binding of extracellular Na+
- Binding of extracellular K+ (correct)
Which of the following correctly describes the components of the electrochemical gradient?
Which of the following correctly describes the components of the electrochemical gradient?
- Chemical force and voltage force
- Chemical force and electrical force (correct)
- Electrical force and temperature force
- Electrical force and pressure force
What type of transport involves the movement of solute using the gradient generated by proton pumps?
What type of transport involves the movement of solute using the gradient generated by proton pumps?
- Bulk transport
- Active transport (correct)
- Facilitated diffusion
- Simple diffusion
Which process is NOT part of bulk transport across the plasma membrane?
Which process is NOT part of bulk transport across the plasma membrane?
What characterizes phagocytosis?
What characterizes phagocytosis?
In receptor-mediated endocytosis, what initiates the vesicle formation?
In receptor-mediated endocytosis, what initiates the vesicle formation?
What is the main electrogenic pump in plants, fungi, and bacteria?
What is the main electrogenic pump in plants, fungi, and bacteria?
What is the primary role of exocytosis?
What is the primary role of exocytosis?
Which transport mechanism directly uses ATP for movement?
Which transport mechanism directly uses ATP for movement?
What is the primary role of the plasma membrane?
What is the primary role of the plasma membrane?
Which statement about phospholipids is true?
Which statement about phospholipids is true?
What effect does cholesterol have on membrane fluidity at warm temperatures?
What effect does cholesterol have on membrane fluidity at warm temperatures?
What type of protein spans the membrane and has hydrophobic regions?
What type of protein spans the membrane and has hydrophobic regions?
Which of the following best describes passive transport?
Which of the following best describes passive transport?
What is osmosis?
What is osmosis?
What distinguishes facilitated diffusion from simple diffusion?
What distinguishes facilitated diffusion from simple diffusion?
In which scenario does a plant cell become turgid?
In which scenario does a plant cell become turgid?
What is the primary function of transport proteins in the plasma membrane?
What is the primary function of transport proteins in the plasma membrane?
What does the sodium-potassium pump primarily achieve?
What does the sodium-potassium pump primarily achieve?
What determines the direction of osmosis across a membrane?
What determines the direction of osmosis across a membrane?
What is the main characteristic of integral membrane proteins?
What is the main characteristic of integral membrane proteins?
Which of the following substances typically requires facilitated diffusion to cross the plasma membrane?
Which of the following substances typically requires facilitated diffusion to cross the plasma membrane?
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