Diffusion
Quiz by Reena
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23 questions
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- Q1Diffusion is the movement of particles from an area of ____ concentration to an area of ____ concentration.high, lowhigh, highlow, lowlow, high30s
- Q2Which of the following factors affects the rate of diffusion?Surface areaPressureParticle sizeTemperature30s
- Q3What is the process by which substances move across a semipermeable membrane from an area of higher concentration to an area of lower concentration?Active transportFacilitated diffusionOsmosisDiffusion30s
- Q4Which of the following is an example of passive diffusion?Oxygen molecules moving from the lungs into the bloodstreamProteins being transported across the cell membrane through a channel proteinGlucose molecules being transported across the cell membraneSodium ions being pumped out of a cell against the concentration gradient30s
- Q5Which of the following factors does NOT affect the rate of diffusion?Concentration gradientSurface areaTemperatureColor30s
- Q6Which of the following is an example of osmosis?Glucose molecules being actively transported out of a cellCarbon dioxide diffusing through a cell membraneSodium ions moving into a cell against the concentration gradientWater moving into a plant cell from a hypotonic solution30s
- Q7Which of the following describes osmosis?The movement of solute molecules from an area of low concentration to an area of high concentration through a selectively permeable membrane.The movement of solute molecules from an area of high concentration to an area of low concentration through a non-permeable membrane.The movement of water molecules from an area of high solute concentration to an area of low solute concentration through a selectively permeable membrane.The movement of water molecules from an area of low solute concentration to an area of high solute concentration through a selectively permeable membrane.30s
- Q8Which of the following factors does NOT affect the rate of osmosis?Membrane permeabilityConcentration gradientTemperaturePressure difference30s
- Q9What happens to a plant cell when placed in a hypertonic solution?It shrinks and becomes flaccid.It remains unaffected.It undergoes plasmolysis.It swells and becomes turgid.30s
- Q10What is a hypertonic solution?A solution with an equal concentration of solutes compared to another solution.A solution with a higher concentration of solutes compared to another solution.A solution with a higher concentration of solvents compared to another solution.A solution with a lower concentration of solutes compared to another solution.30s
- Q11What is the process of osmosis driven by?The difference in solute concentration across a selectively permeable membrane.The pressure difference across a selectively permeable membrane.The difference in solvent concentration across a selectively permeable membrane.The temperature difference across a selectively permeable membrane.30s
- Q12What is the purpose of osmosis in biological systems?To transport solute molecules across cell membranes.To increase the pressure inside cells.To maintain the balance of water and solute concentrations inside and outside of cells.To generate energy for cellular activities.30s
- Q13What is a hypotonic solution?A solution with a lower concentration of solvents compared to another solution.A solution with a lower concentration of solutes compared to another solution.A solution with an equal concentration of solutes compared to another solution.A solution with a higher concentration of solutes compared to another solution.30s
- Q14What is the main driving force behind osmosis?The presence of a selectively permeable membrane.The difference in solvent concentration between two solutions.The difference in solute concentration between two solutions.The pressure difference between two solutions.30s
- Q15Which of the following is NOT a characteristic of active transport?Moves molecules against their concentration gradientCan be performed by protein pumpsMovement down a concentration gradientRequires energy30s