{"id":4,"date":"2014-11-21T10:52:32","date_gmt":"2014-11-21T10:52:32","guid":{"rendered":"http:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecbiohu2hwrk\/?page_id=4"},"modified":"2014-11-21T11:05:30","modified_gmt":"2014-11-21T11:05:30","slug":"4","status":"publish","type":"page","link":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecbiohu2hwrk\/4\/","title":{"rendered":"Unit 2 Sheet 1_1"},"content":{"rendered":"

1. Oxygen consumption is often used to measure the intensity of exercise. VO2<\/sub>max is the
\nmaximum rate at which someone can take up and use oxygen. Graph 1 shows the
\nVO2<\/sub>max of office workers, and various professional sportsmen and sportswomen.
\n\"\"<\/a>
\na) i) What is the difference between the VO2max of a male cross-country skier and a male
\noffice worker?
\nii) Cross-country skiing is a very energy demanding sport. What is the advantage to a
\ncross-country skier of having a high VO2<\/sub>max?
\nb) Calculate the oxygen uptake, during a three minute race, of a female rower who
\nweighs 85 kg. Assume that she has maximum oxygen uptake throughout the race.
\nc) The graph shows that, on average, men have higher maximum oxygen uptakes than
\nwomen. Suggest a reason for this difference.<\/p>\n

Tests which determine the VO2<\/sub>max of individuals use the relationship between heart
\nrate and oxygen uptake. The maximum oxygen uptake occurs when an individual\u2019s heart
\nis beating at its maximum rate.
\nGraph 2 shows measurements of heart rate and oxygen uptake for a professional
\nsportsman and an office worker, who are both 24 years old. The measurements were
\ntaken as speed was gradually increased on a treadmill.<\/p>\n

\"\"<\/a>
\nd) i) An individual\u2019s maximum heart rate can be calculated by subtracting their age from
\n220. Calculate the maximum heart rate of the office worker in beats\/min.
\nii) Use the graph to predict the maximum oxygen uptake of the office worker in litres\/min.
\niii) The sportsman weighed 60 kg. Use the information in graphs 1 and 2 to determine his
\nsport.<\/p>\n

2. An investigation was carried out to find out how a cyclist\u2019s metabolism changed while
\nhe pedalled at increasing speed. The cyclist\u2019s heart rate, fat and carbohydrate
\nconsumption were measured at different power outputs. The graph below shows the
\nresults of the investigation.<\/p>\n

\"\"<\/a>
\na) What is the heart rate (bpm) of the cyclist when his power output is 90 watts?
\nb) Compare the consumption of fat and carbohydrate as cycling power increases.
\nQuote data from the graph in your answer.
\nc) Cyclists often use heart-rate monitors in training. A cyclist wishes to maintain his fat
\nconsumption at its maximum and, at the same time, limit his carbohydrate consumption.
\nAt what heart rate (bpm) should he cycle?
\nd) The cyclist raced for 4 hours at a power output of 210 watts. During that time he
\nconsumed 100 g of carbohydrate in a drink. Assuming he started with a carbohydrate
\nstore of 500 g, how much carbohydrate (g) would he be left with at the end of the race?
\ne) This investigation used fat and carbohydrate consumption to measure metabolism.
\nName one other measurement which can be taken to calculate metabolic rate.<\/p>\n

3. The diagrams below represent the structure of three different animal\u2019s hearts.
\n\"\"<\/a>
\nState which heart (A, B or C) could be an amphibian\u2019s and explain your choice.<\/p>\n","protected":false},"excerpt":{"rendered":"

1. Oxygen consumption is often used to measure the intensity of exercise. VO2max is the maximum rate at which someone can take up and use oxygen. Graph 1 shows the VO2max of office workers, and various professional sportsmen and sportswomen. a) i) What is the difference between the VO2max of a male cross-country skier and … Continue reading Unit 2 Sheet 1_1<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":2454,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-4","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecbiohu2hwrk\/wp-json\/wp\/v2\/pages\/4","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecbiohu2hwrk\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecbiohu2hwrk\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecbiohu2hwrk\/wp-json\/wp\/v2\/users\/2454"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecbiohu2hwrk\/wp-json\/wp\/v2\/comments?post=4"}],"version-history":[{"count":5,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecbiohu2hwrk\/wp-json\/wp\/v2\/pages\/4\/revisions"}],"predecessor-version":[{"id":16,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecbiohu2hwrk\/wp-json\/wp\/v2\/pages\/4\/revisions\/16"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecbiohu2hwrk\/wp-json\/wp\/v2\/media?parent=4"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}