Phospholipid Fundamentals
Transport Mechanisms
Concentration Concepts
Membrane Proteins
Homeostasis Heroes
100
What do we call the structure of the membrane formed by two layers of phospholipids
Phospholipid bilayer
100
What type of transport allows molecules to move from high to low concentration without energy?
Passive transport
100
What do you call an area with a low concentration of solute?
Hypotonic
100
What type of proteins span the entire cell membrane?
Integral membrane proteins
100
What is the term for maintaining a stable internal environment?
Homeostasis
200
What molecule helps maintain the fluidity of the cell membrane?
Cholesterol
200
What process involves large, polar molecules passing through the membrane with a protein?
Facilitated diffusion
200
What do you call an area with a high concentration of solute?
Hypertonic
200
What are proteins that bind to one side of the cell membrane called?
Peripheral membrane proteins
200
Which type of feedback seeks to return a system back to its normal state?
Negative feedback loop
300
What term describes the selective nature of the cell membrane?
Semi-permeable
300
Which type of transport moves molecules from low to high using ATP?
Active transport
300
What term refers to the amount of solute in a given area?
Concentration
300
Does simple diffusion use a protein?
No
300
What type of feedback encourages rapid change in a system, away from a normal state?
Positive feedback loop
400
What are the two parts of phospholipids? Which parts are hydrophilic or hydrophobic?
Hydrophilic head and hydrophobic tail
400
What process allows large molecules to enter the cell by forming a vesicle?
Endocytosis
400
What do you call an area with equal concentrations of solute on either side?
Isotonic
400
Does active transport use a protein?
Yes
400
A person gets thirsty after eating a salty meal, so they drink some water. Which type of feedback is this?
Negative feedback
500
What term describes the flexible and diverse nature of the cell membrane?
Fluid mosaic model
500
What type of transport is this?
Facilitated diffusion
500
What is the movement of water from low to high concentration called?
Osmosis
500
What is the function of membrane proteins?
Transportation of molecules in and out of the cell
500
When there is a cut, platelets (which clot wounds) release chemicals to attract more platelets. Which type of feedback is this?
Positive feedback