Podcast
Questions and Answers
What is the main function of the cell membrane?
What is the main function of the cell membrane?
- To regulate the balance of substances inside and outside the cell (correct)
- To synthesize proteins within the cell
- To generate energy for the cell
- To provide structural support to the cell
How does a concentration gradient affect the movement of molecules?
How does a concentration gradient affect the movement of molecules?
- Molecules move from low concentration to high concentration
- Molecules move in a random direction regardless of concentration
- Molecules move from high concentration to low concentration (correct)
- Molecules remain stationary when there is a concentration gradient
Which cellular structure is responsible for ensuring stability by monitoring and adjusting internal conditions?
Which cellular structure is responsible for ensuring stability by monitoring and adjusting internal conditions?
- Mitochondria
- Endoplasmic reticulum
- Cell membrane (correct)
- Nucleus
What is the primary driving force behind the movement of particles in diffusion?
What is the primary driving force behind the movement of particles in diffusion?
In what direction do molecules move during diffusion?
In what direction do molecules move during diffusion?
What is the main difference between osmosis and dialysis?
What is the main difference between osmosis and dialysis?
Which statement best describes the role of Lugol solution as an indicator in detecting starch?
Which statement best describes the role of Lugol solution as an indicator in detecting starch?
In hypertonic solutions, how do cells react to the higher concentration of solute outside compared to inside?
In hypertonic solutions, how do cells react to the higher concentration of solute outside compared to inside?
What distinguishes passive transport from active transport across a membrane?
What distinguishes passive transport from active transport across a membrane?
How does the sodium-potassium pump function in terms of transporting ions across a cell membrane?
How does the sodium-potassium pump function in terms of transporting ions across a cell membrane?
