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Title: The digestive system Post by: Bordeen on Jul 9, 2013 Hydrogen peroxide is a liquid compound composed of oxygen and hydrogen. A student fills each of two test tubes half full of hydrogen peroxide and notices no reaction occurs in either tube. When she adds a small piece of fresh liver to one of the test tubes, she observes a great deal of bubbling in that tube. A test shows that the bubbles escaping are oxygen gas. The piece of liver must contain
1. The substrate in this reaction is a) hydrogen peroxide. b) oxygen. c) liver. d) hydrogen. I think the awnser is c but im, not sure. 2.The fact that oxygen was given off indicates that a) the liver was chemically changed. b) co-enzymes were produced during the reaction. c) an enzyme was consumed during the reaction. d) hydrogen peroxide was chemically changed I think the answer is d Title: Re: The digestive system Post by: goji.go on Jul 9, 2013 1. The substrate in this reaction is a) hydrogen peroxide. b) oxygen. c) liver. d) hydrogen. 2 H2O2 --> 2 H2O + O2 Catalase is an enzyme which breaks down hydrogen peroxide into water and oxygen. Therefore, H2O2 is the substrate. 2.The fact that oxygen was given off indicates that a) the liver was chemically changed. b) co-enzymes were produced during the reaction. c) an enzyme was consumed during the reaction. d) hydrogen peroxide was chemically changed D Title: Re: The digestive system Post by: Bordeen on Jul 11, 2013 ok thanks! ;D
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