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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?

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?

Bulk transport

Active transport (correct)

Facilitated diffusion

Simple diffusion

Which process is NOT part of bulk transport across the plasma membrane?

Facilitated diffusion Signup and view all the answers

What characterizes phagocytosis?

Cell engulfs particles in a vacuole Signup and view all the answers

In receptor-mediated endocytosis, what initiates the vesicle formation?

Binding of ligands to receptors Signup and view all the answers

What is the main electrogenic pump in plants, fungi, and bacteria?

Proton pump Signup and view all the answers

What is the primary role of exocytosis?

Exporting products from cells Signup and view all the answers

Which transport mechanism directly uses ATP for movement?

Active transport Signup and view all the answers

What is the primary role of the plasma membrane?

To regulate the movement of substances in and out of the cell Signup and view all the answers

Which statement about phospholipids is true?

They contain both hydrophobic and hydrophilic regions. Signup and view all the answers

What effect does cholesterol have on membrane fluidity at warm temperatures?

Restrains the movement of phospholipids. Signup and view all the answers

What type of protein spans the membrane and has hydrophobic regions?

Integral proteins Signup and view all the answers

Which of the following best describes passive transport?

It occurs without energy input from the cell. Signup and view all the answers

What is osmosis?

The movement of water across a selectively permeable membrane. Signup and view all the answers

What distinguishes facilitated diffusion from simple diffusion?

Facilitated diffusion involves specific transport proteins. Signup and view all the answers

In which scenario does a plant cell become turgid?

In a hypotonic solution. Signup and view all the answers

What is the primary function of transport proteins in the plasma membrane?

To facilitate the movement of hydrophilic substances. Signup and view all the answers

What does the sodium-potassium pump primarily achieve?

Maintaining resting membrane potential. Signup and view all the answers

What determines the direction of osmosis across a membrane?

The concentration of solute on either side of the membrane. Signup and view all the answers

What is the main characteristic of integral membrane proteins?

They span the entire membrane and interact with both sides. Signup and view all the answers

Which of the following substances typically requires facilitated diffusion to cross the plasma membrane?

Glucose Signup and view all the answers

Untitled Quiz

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Questions and Answers

What triggers the release of phosphate from the protein in active transport?

Which of the following correctly describes the components of the electrochemical gradient?

What type of transport involves the movement of solute using the gradient generated by proton pumps?

Which process is NOT part of bulk transport across the plasma membrane?

What characterizes phagocytosis?

In receptor-mediated endocytosis, what initiates the vesicle formation?

What is the main electrogenic pump in plants, fungi, and bacteria?

What is the primary role of exocytosis?

Which transport mechanism directly uses ATP for movement?

What is the primary role of the plasma membrane?

Which statement about phospholipids is true?

What effect does cholesterol have on membrane fluidity at warm temperatures?

What type of protein spans the membrane and has hydrophobic regions?

Which of the following best describes passive transport?

What is osmosis?

What distinguishes facilitated diffusion from simple diffusion?

In which scenario does a plant cell become turgid?

What is the primary function of transport proteins in the plasma membrane?

What does the sodium-potassium pump primarily achieve?

What determines the direction of osmosis across a membrane?

What is the main characteristic of integral membrane proteins?

Which of the following substances typically requires facilitated diffusion to cross the plasma membrane?

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