B1 Cell level systems

Practice questions on Cell level systems

• Explain why a plant kept in complete darkness for several days will eventually stop growin… (4 marks, Explain)
• A scientist investigates how the concentration of carbon dioxide in the air affects the ra… (4 marks, Explain)
• A yeast cell is placed in a sealed container with a small amount of glucose solution. Expl… (4 marks, Explain)
• A marathon runner completes a 26-mile race. During the final few miles, the runner's muscl… (4 marks, Explain)
• A student cuts their finger during a sports lesson and notices the wound feels warm. Expla… (4 marks, Explain)
• A bacterial cell is a prokaryotic cell. Explain why bacterial cells do not have mitochondr… (4 marks, Explain)
• A yeast cell is a eukaryotic cell. Explain why a yeast cell contains mitochondria but does… (4 marks, Explain)
• A student observing a cell under a light microscope notices several distinct organelles. D… (4 marks, Describe)
• Explain why a plant kept in complete darkness for several weeks will eventually die, even … (4 marks, Explain)
• Explain why plant cells have both a cell membrane and a cell wall, whilst animal cells onl… (4 marks, Explain)
• A palisade mesophyll cell and a human cheek cell are both eukaryotic cells. Explain why a … (4 marks, Explain)
• Explain why aerobic respiration is described as an exothermic reaction, and state where in… (4 marks, Explain)
• Explain why cellular respiration is described as both 'universal' and 'exothermic'. (4 marks, Explain)
• A long-distance cyclist begins a race at a steady pace but, towards the end of the race, t… (4 marks, Explain)
• Explain how the structure of an enzyme allows it to speed up a chemical reaction, and desc… (4 marks, Explain)
• A student leaves a piece of bread in a warm, moist cupboard. After several days, the bread… (4 marks, Explain)
• A athlete is training indoors on a stationary bicycle. At the start of the session, the at… (4 marks, Explain)
• A student places a green plant on a windowsill in bright sunlight. Explain why the rate of… (4 marks, Explain)
• A farmer grows crops in a large greenhouse. During winter, the farmer notices that the cro… (4 marks, Explain)
• Explain why leaves contain palisade mesophyll cells and why these cells are able to carry … (4 marks, Explain)