3 Movement into and out of cells

Practice questions on Movement into and out of cells

• Explain why active transport stops when a cell is deprived of oxygen. (4 marks, Explain)
• Explain the role of carrier proteins in active transport across a cell membrane. (4 marks, Explain)
• A student places a red blood cell into distilled water. Describe and explain what happens … (4 marks, Describe and explain)
• A piece of celery is left out of water for several hours and becomes limp. It is then plac… (4 marks, Explain)
• Carbon dioxide is produced during respiration in muscle cells and diffuses into the blood.… (4 marks, Describe)
• A student places a thin slice of fresh potato into a beaker of concentrated salt solution.… (4 marks, Explain)
• Oxygen produced during photosynthesis must diffuse from the mesophyll cells of a leaf to t… (4 marks, Explain)
• Explain how an increase in temperature and an increase in surface area each affect the rat… (4 marks, Explain)
• Oxygen diffuses from the alveoli in the lungs into the surrounding blood capillaries. Expl… (4 marks, Explain)
• A farmer stores freshly harvested carrots in a very salty brine solution overnight. The ne… (4 marks, Explain)
• A student places a plant cell into a concentrated sugar solution. Describe what happens to… (4 marks, Describe)
• A potato chip is placed in a dilute salt solution. After 30 minutes, the chip feels firm a… (4 marks, Explain)
• Describe how active transport moves ions into root hair cells from the soil. (4 marks, Describe)
• Explain why active transport, rather than diffusion, is needed for the uptake of glucose i… (4 marks, Explain)
• Compare active transport with diffusion, stating two differences between the two processes… (4 marks, Compare)