1.1 Cells and movement across membranes

Practice questions on Cells and movement across membranes

• Explain how oxygen moves from the air sacs (alveoli) in the lungs into the blood during br… (4 marks, Explain)
• Explain why mitochondria are found in large numbers in sperm cells. (4 marks, Explain)
• Describe the differences between prokaryotic cells and eukaryotic cells. (4 marks, Describe)
• Explain how cells are organised into tissues, organs and organ systems in a multicellular … (4 marks, Explain)
• A student observes two cells under a microscope. One cell has a cell wall, chloroplasts an… (4 marks, Describe)
• Explain why a liver cell and a muscle cell, despite containing the same genetic informatio… (4 marks, Explain)
• Explain why glucose moves out of the small intestine into the blood after a meal. (4 marks, Explain)
• Explain why water moves from the soil into the root hair cells of a plant. (4 marks, Explain)
• Explain why water moves out of a red blood cell when it is placed in a concentrated salt s… (4 marks, Explain)
• A student places a piece of potato in a very dilute sugar solution. After 30 minutes, the … (4 marks, Explain)