Membrane Structure
What model describes the plasma membrane as a fluid mix of phospholipids, proteins, cholesterol, and carbohydrates?
What is the fluid mosaic model?
Name the three types of passive transport.
What are simple diffusion, facilitated diffusion, and osmosis?
What molecule provides energy for active transport?
What is ATP?
What is the purpose of the plasma membrane?
What is to control what enters and leaves the cell?
Moving down a slide is an analogy for which type of transport?
What is facilitated diffusion?
What are the two main parts of a phospholipid molecule?
What are a hydrophilic head and hydrophobic tails?
Which small molecules easily pass through the membrane by simple diffusion?
What are oxygen and carbon dioxide?
Which active transport pump moves sodium ions out and potassium ions in?
What is the sodium-potassium pump?
Why is the plasma membrane described as dynamic rather than static?
What is because its components move and change positions?
Climbing up a rock wall is an analogy for which type of transport?
What is active transport?
What is the term for the plasma membrane's ability to allow some substances in but not others?
What is semi-permeability?
What protein helps move large or polar molecules through the membrane during facilitated diffusion?
What is a transport protein?
Does active transport move substances up or down their concentration gradient?
What is up (from low to high concentration)?
Which molecules are fat-soluble and can easily pass through the membrane?
What are fat-soluble vitamins (A, D, E, and K)?
Spraying perfume in a room is an analogy for which type of transport?
What is simple diffusion?
Which component in animal cell membranes helps regulate fluidity and acts like antifreeze?
What is cholesterol?
What is the movement of water across a membrane called?
What is osmosis?
What is the active process of engulfing large particles into the cell called?
What is phagocytosis?
What is the difference between integral and peripheral proteins?
What is integral proteins span or are embedded in the membrane; peripheral proteins are attached to the membrane surface?
Packing lunch into a bag to bring inside school is like which cellular process?
What is endocytosis?
What molecules on the cell membrane surface help cells recognize each other?
What are carbohydrates (glycoproteins and glycolipids)?
What happens to an animal cell when it loses water through osmosis?
What is it shrivels?
What active transport process uses vesicles to release substances from the cell?
What is exocytosis?
How do carbohydrates contribute to immune system function?
What is by helping cells recognize self versus non-self?
Opening your lunch bag to take food out is like which cellular process?
What is exocytosis?