Podcast
Questions and Answers
What is the main component of a plasma membrane?
What is the main component of a plasma membrane?
- Protein
- Carbohydrates
- Phospholipid (correct)
- RNA
What is the hydrophilic part of a phospholipid molecule?
What is the hydrophilic part of a phospholipid molecule?
- Fatty acid tails
- Glycerol and phosphate group (correct)
- Protein molecules
- Cholesterol
Why do phospholipids arrange themselves in a specific way in a membrane?
Why do phospholipids arrange themselves in a specific way in a membrane?
- Because one side of the phospholipid is hydrophobic and repels the aqueous environment (correct)
- To facilitate endocytosis
- To facilitate active transport
- To regulate osmosis
What is the approximate thickness of a cell membrane?
What is the approximate thickness of a cell membrane?
What type of molecules are the tails of a phospholipid?
What type of molecules are the tails of a phospholipid?
What is the main purpose of carrier proteins in membrane transport?
What is the main purpose of carrier proteins in membrane transport?
What is the term for the movement of free water molecules through a partially permeable membrane?
What is the term for the movement of free water molecules through a partially permeable membrane?
What is the role of ATP in active transport?
What is the role of ATP in active transport?
What is the main function of the fluid mosaic model of membrane structure?
What is the main function of the fluid mosaic model of membrane structure?
What is the term for the process in which cells take in molecules from outside the cell?
What is the term for the process in which cells take in molecules from outside the cell?
What is the term for the process in which cells release molecules outside the cell?
What is the term for the process in which cells release molecules outside the cell?
What is the movement of water from an area of high water potential to an area of low water potential through a partially permeable membrane?
What is the movement of water from an area of high water potential to an area of low water potential through a partially permeable membrane?
What is the process by which cells take in solid material from outside the cell?
What is the process by which cells take in solid material from outside the cell?
What is the term for the movement of molecules from an area of high concentration to an area of low concentration without using energy?
What is the term for the movement of molecules from an area of high concentration to an area of low concentration without using energy?
What is the term for the 'tendency of water to move out of a solution by osmosis'?
What is the term for the 'tendency of water to move out of a solution by osmosis'?
What is the process by which cells release substances out of the cell that have a function rather than being a waste product?
What is the process by which cells release substances out of the cell that have a function rather than being a waste product?
What is the structure of the cell membrane that allows it to regulate what enters and leaves the cell?
What is the structure of the cell membrane that allows it to regulate what enters and leaves the cell?
