Podcast
Questions and Answers
What is the function of CCR5 in HIV infection?
What is the function of CCR5 in HIV infection?
- It is not essential for HIV infection
- It is a type of protein
- It prevents HIV from infecting the cell
- It helps HIV infect the cell (correct)
What do membrane carbohydrates recognize on the surface of other cells?
What do membrane carbohydrates recognize on the surface of other cells?
- Molecules containing carbohydrates (correct)
- Lipids only
- Nucleic acids
- Proteins only
What determines the asymmetrical distribution of proteins, lipids, and carbohydrates in the plasma membrane?
What determines the asymmetrical distribution of proteins, lipids, and carbohydrates in the plasma membrane?
- The lysosomes
- The ER and Golgi apparatus (correct)
- The extracellular matrix
- The cytoskeleton
What is attached to lipids in glycolipids?
What is attached to lipids in glycolipids?
Where are membrane carbohydrates most commonly attached?
Where are membrane carbohydrates most commonly attached?
What is the term for proteins with attached carbohydrates?
What is the term for proteins with attached carbohydrates?
What is the main characteristic of passive transport across a membrane?
What is the main characteristic of passive transport across a membrane?
What is the tendency of molecules in diffusion?
What is the tendency of molecules in diffusion?
What is the direction of diffusion of substances in a population?
What is the direction of diffusion of substances in a population?
What is the state at which the rate of diffusion is equal in both directions?
What is the state at which the rate of diffusion is equal in both directions?
What is the direction of net diffusion of a substance?
What is the direction of net diffusion of a substance?
Why is the diffusion of a substance across a biological membrane considered passive transport?
Why is the diffusion of a substance across a biological membrane considered passive transport?
What is the result of membrane proteins mixing after 1 hour in a hybrid cell?
What is the result of membrane proteins mixing after 1 hour in a hybrid cell?
What happens to membranes as temperatures cool?
What happens to membranes as temperatures cool?
What is the primary function of the sodium-potassium pump?
What is the primary function of the sodium-potassium pump?
Why are membranes rich in unsaturated fatty acids more fluid?
Why are membranes rich in unsaturated fatty acids more fluid?
What is the function of cholesterol in animal cell membranes at warm temperatures?
What is the function of cholesterol in animal cell membranes at warm temperatures?
What happens to the shape of the sodium-potassium pump protein after Na+ binding and phosphorylation?
What happens to the shape of the sodium-potassium pump protein after Na+ binding and phosphorylation?
What is released outside the cell after phosphorylation of the sodium-potassium pump protein?
What is released outside the cell after phosphorylation of the sodium-potassium pump protein?
What is the role of cholesterol in animal cell membranes at cool temperatures?
What is the role of cholesterol in animal cell membranes at cool temperatures?
What do plants use to buffer membrane fluidity?
What do plants use to buffer membrane fluidity?
What is gained by the sodium-potassium pump protein after releasing the phosphate group?
What is gained by the sodium-potassium pump protein after releasing the phosphate group?
What is the energy source used by the sodium-potassium pump?
What is the energy source used by the sodium-potassium pump?
What is the term for the process by which the sodium-potassium pump moves ions across the cell membrane?
What is the term for the process by which the sodium-potassium pump moves ions across the cell membrane?
What is the process by which a cell takes in macromolecules?
What is the process by which a cell takes in macromolecules?
What is the type of endocytosis where a cell engulfs a particle in a vacuole?
What is the type of endocytosis where a cell engulfs a particle in a vacuole?
What is the name of the process by which a cell engulfs a particle in a vacuole, and then fuses with a lysosome to digest the particle?
What is the name of the process by which a cell engulfs a particle in a vacuole, and then fuses with a lysosome to digest the particle?
What is the term for the process of 'cellular drinking'?
What is the term for the process of 'cellular drinking'?
What is the term for the process of 'cellular eating'?
What is the term for the process of 'cellular eating'?
How many types of endocytosis are there?
How many types of endocytosis are there?
