4 Energy, exercise and coordination

Practice questions on Energy, exercise and coordination

• A long-distance runner completes a marathon. Towards the end of the race, the runner's mus… (5 marks, Explain)
• A student goes for a brisk walk up a steep hill. During the walk, the student's muscles ar… (5 marks, Explain)
• A cyclist rides at a steady pace for 30 minutes, then suddenly increases to maximum effort… (5 marks, Explain)
• Describe how a reflex arc works to produce a rapid response when a person touches a very h… (5 marks, Describe)
• Explain how the sliding filament model accounts for muscle contraction, including the role… (5 marks, Explain)
• A sprinter finishes a 100 m race and immediately feels their leg muscles become stiff and … (5 marks, Explain)
• A young child quickly blinks when a fly suddenly moves close to their eye. This blinking r… (5 marks, Explain)
• A person is cooking and accidentally places their hand on a hot hob. Explain how the nervo… (5 marks, Explain)
• Explain how sound waves are detected by the ear and how nerve impulses are sent to the bra… (5 marks, Explain)
• A person has not eaten for several hours. Their blood glucose concentration begins to fall… (5 marks, Explain)
• Explain how the unequal distribution of auxin in a shoot tip causes the shoot to grow towa… (5 marks, Explain)
• A person goes for a long run on a hot day. During the run, their body temperature rises ab… (5 marks, Explain)
• A person has been sitting in a very cold room for an extended period of time. Their core b… (5 marks, Explain)
• A scientist investigated the response of young bean plant shoots to gravity. The shoots we… (5 marks, Explain)
• A student sprints 400 metres and then rests. During the sprint, the student's muscles resp… (5 marks, Explain)
• A farmer grows a crop of tomato plants in a large greenhouse. The farmer notices that the … (5 marks, Explain)
• A gardener notices that the roots of seedlings always grow downwards into the soil, even w… (5 marks, Explain)
• A student placed cress seedlings on a windowsill so that light came from one direction onl… (5 marks, Explain)
• A person has not eaten for several hours and their blood glucose concentration falls below… (5 marks, Explain)
• A student eats a large meal containing a lot of sugar. Explain how the body detects the ch… (5 marks, Explain)