11.1. Gas exchange in humans
A subsection of Biology, 0610, through 11. Gas exchange in humans
Listing 10 of 291 questions
shows the human respiratory system. On use label lines to identify: a bronchiole; the larynx; the trachea. shows: a group of alveoli and the capillaries surrounding them in a human lung; a section through this group of alveoli with most of the capillaries removed; a magnified section of part of the wall of an alveolus and its capillary. capillary magnified wall of alveoli cut open group of alveoli and capillaries surrounding them section through alveoli with most of the capillaries removed magnified section of the wall of an alveolus and its capillary air liquid film alveolus wall capillary wall red blood cell air out blood from pulmonary artery capillary alveolus blood to pulmonary vein air in Use to describe three features of gas exchange surfaces in animals. feature 1 feature 2 feature 3 In an investigation a student recorded the volume of air inspired in one minute. The measurement was taken while the student was resting and again when the student had run an 800 m race. The results are shown in Table 3.1. Table 3.1 volume of air inspired / dm3 per min before the race 5.80 at the end of the race 88.75 Calculate the increase in the volume of air inspired by the student at the end of the race. dm3 per min State two changes that the body makes to increase the volume of air inspired. Suggest one reason why the body needs more air during exercise.
0610_s15_qp_21
THEORY
2015
Paper 2, Variant 1
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Questions Discovered
291