Cell membrane
These small, nonpolar molecules can generally cross the phospholipid bilayer directly.
what is O2 and CO2?
A molecule moves from high to low concentration through a membrane protein without using ATP. This transport is
What is facilitated diffusion?
The net movement of particles from an area of higher concentration to an area of lower concentration is called this.
What is diffusion?
Does coupled transport directly use ATP at the transport protein
what is No?
This cytoskeletal filament is made of actin
what are microfilaments?
A membrane allows oxygen to cross freely but prevents sodium ions from crossing unless a transport protein is present. What property of the membrane does this demonstrate?
what is selective permeability?
T or F: All transport through membrane proteins requires ATP
what is false?
water follows the movement of
what is solute?
A white blood cell surrounds and engulfs a bacterium.
what is Phagocytosis?
What type of motor protein is dynein
fluidity of the membrane changes when it's in extreme heat
What is increases?
In the sodium potassium pump, how many molecules of Na+ move out of the cell
what is three?
A red blood cell is placed in a solution that causes water to leave the cell. The cell is most likely placed in
What is hypertonic solution?
Which substance moves against its gradient in the SGLT transporter?
what is glucose?
motor proteins require this molecule to power their movement
what is ATP?
This molecule acts as a buffer in maintaining the fluidity if the membrane
what is cholesterol?
A cell uses ATP to pump Ca²⁺ from low concentration to high concentration.
what is active transport?
The pressure required to stop the net movement of water
what is osmotic pressure?
A cell takes in small droplets of extracellular fluid and dissolved substances. What type of endocytosis is this?
what is pinocytosis?
cytoskeletal filament that is especially important for mechanical strength and resisting stretching.
what is intermediate filaments?
This molecule increases rigidity of the membrane
what is sphingolipids?
A transporter moves two substances in the same direction, using the gradient of one substance to drive the other.
what is symport (secondary active transport)?
a solution has a high conc of solute. it's osmotic pressure is
what is high?
During receptor-mediated endocytosis, a protein forms the coat around the vesicle as it buds from the plasma membrane
what is clathrin?
A vesicle needs to move from near the nucleus toward the cell periphery. This motor protein aids in its transport
what is kinesin?