1.When breathing out, which changes occur in the volume of the thorax, the rib cage and the diaphragm? A B C D 2.Which feature of alveoli decreases the distance over which oxygen and carbon dioxide molecules diffuse? A Each alveolus has a large blood supply. B Each alveolus is only 0.1-0.2 mm in diameter. C There are approximately 150 million alveoli in each lung. D The walls of the alveoli are only one cell thick. 3.The composition of inhaled air and exhaled air is different.Which analysis is correct? A B C D 4.The table shows the composition of inspired and expired air. A B C D 5.The diagram illustrates changes in air pressure taking place inside the lungs during a complete cycle of breathing.Which position on the graph corresponds to the point at which the ribs are beginning to be raised? A B C D 6.The diagram shows the lungs. Which structures contain muscles that contract when breathing in? A X only B X and Y only C Y and Z only D X, Y and Z 7.The diagram shows a transverse section of a leaf. Which cells absorb carbon dioxide? A 1, 2 and 3 B 2, 3 and 4 C 2, 4 and 5 D 1, 3 and 5 8.Which process does not depend on respiration? A active uptake of ions B conduction of nervous impulses C diffusion of glucose D muscle contraction 9.A dish is filled with agar jelly containing protein. Four holes are cut in the jelly and each hole is filled as shown. Pepsin is a protease found in the stomach.After 30 minutes, which hole will be surrounded by the largest area without protein? A B C D 10.The small intestine of a person contains a low concentration of glucose produced from the digestion of starch.Glucose is taken up by the cells of the villi.How does the glucose move? A by active transport against the concentration gradient B by active transport with the concentration gradient C by diffusion against the concentration gradient D by diffusion with the concentration gradient Loading … Question 1 of 10
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