Human Gas Exchange System Past Paper PDF

1 1 The diagram shows the human gas exchange system. The list shows the names of some of the parts of the human gas exchange system. alveolus bronchiole bronchus diaphragm larynx rib...

1 1 The diagram shows the human gas exchange system. The list shows the names of some of the parts of the human gas exchange system. alveolus bronchiole bronchus diaphragm larynx rib trachea Use the words from the list to label the diagram. You do not need to use every word. Write your answers on the answer lines provided in the diagram.. [Total: 5]  2 2 The diagram shows part of the gas exchange system in the lungs of a human. State the letter in the diagram that shows where the concentration of: carbon dioxide in the blood is highest........................ oxygen in the blood is highest.................................... [Total: 2]  3 3 A student breathed into a machine while they were at rest. The machine recorded the volume of air as they breathed in and out. The results are shown in the graph. The rate and depth of breathing increases during physical activity. Sketch another line on the graph between 60 and 80 seconds to show this. [Total: 2]  4 4 A student breathed into a machine while they were at rest. The machine recorded the volume of air as they breathed in and out. The results are shown in the graph. State the volume of air breathed in during the first breath shown in the graph. 3................................................... dm [Total: 1] 5 The diagram shows the human gas exchange system. State the name of the tissue that prevents the collapse of Y and Z during breathing...................................................................................................................................................  5 [Total: 1] 6 The table shows the energy used by an adult male over 24 hours. activity energy used/ kJ sleeping 2400 awake, but physically inactive 3000 awake and active 6600 State the name of the process that releases energy to maintain a constant body temperature while the adult male is sleeping................................................................................................................................................... [Total: 1] 7 Energy is used to maintain body temperature. State three other uses of energy in humans. 1............................................................................................................................................... 2............................................................................................................................................... 3............................................................................................................................................... [Total: 3]  6 8 Seed banks are used to conserve endangered plant species. The diagram shows some of the steps involved in managing a seed bank. seeds are collected from many populations of each species seeds are checked using X-rays seeds are stored at low temperatures in the seed bank a small sample of seeds is germinated Seeds stored at low temperatures have very low respiration rates. Explain why........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... [Total: 2]  7 9 State one substance required for aerobic respiration that is not required for anaerobic respiration................................................................................................................................................... [Total: 1] 10 What are products of respiration in green plants? A glucose and carbon dioxide B glucose and oxygen C water and carbon dioxide D water and oxygen [Total: 1] 11 Respiration occurs in all living organisms. State the word equation for aerobic respiration................................................................................................................................................... [Total: 2]  8 12 The box on the left shows the beginning of a sentence. The boxes on the right show some sentence endings. Draw three straight lines to make three correct sentences about aerobic respiration. involves enzymes. only occurs in animals. produces carbon dioxide and water. Aerobic respiration produces lactic acid. requires chlorophyll. uses glucose and oxygen. [Total: 3]  9 13 Oxygen concentration is higher in inspired air than in expired air. State one other way the composition of inspired air differs from the composition of expired air................................................................................................................................................... [Total: 1] 14 The diagram shows the human gas exchange system. State the name of structure A in the diagram................................................................................................................................................... [Total: 1]  10 15 A scientist measured the mass of carbon dioxide produced by anaerobic respiration in yeast cells for 1200 minutes. The graph shows the results. The investigation was repeated with boiled yeast cells. Predict the effect on the mass of carbon dioxide produced and explain your prediction........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... [Total: 2]  11 16 A scientist measured the mass of carbon dioxide produced by anaerobic respiration in yeast cells for 1200 minutes. The graph shows the results. State the name of one other product of anaerobic respiration in yeast cells................................................................................................................................................... [Total: 1] 17 Respiration occurs in all living organisms. The table shows the energy released during the aerobic and anaerobic respiration of one molecule of glucose in humans. type of respiration energy released / kJ aerobic 2872 anaerobic 118 Calculate the difference in energy released between aerobic and anaerobic respiration.............................................................................................................................................. kJ [Total: 1]  12 18 The box on the left contains the words ‘Aerobic respiration’. The boxes on the right show some sentence endings. Draw lines to make three correct sentences about aerobic respiration. involves the action of enzymes. occurs in animals only. produces water. Aerobic respiration requires carbon dioxide. releases less energy than anaerobic respiration. requires oxygen. [Total: 3]  13 19 Complete the sentence by drawing a line under the correct word or phrase shown in bold. Aerobic respiration releases less / more / the same amount of energy compared with anaerobic respiration. [Total: 1] 20 The box on the left contains the term ‘Respiration’. The boxes on the right contain sentence endings. Draw two lines to join the term ‘Respiration’ to two boxes on the right to make two correct sentences. always produces carbon dioxide. is necessary for diffusion. Respiration occurs only in animals. releases energy. uses glucose. [Total: 2] 14