Biology Form 2 Question Paper

Biology Form 2

Course:Secondary Level

Exam Year:2010

Instructions:Answer all the questions. 1.State the functions of the following cell organelles, a)Golgi bodies.(3mks) b)Lysosomes.(1mk) c)Ribosomes.(1mk) 2.A potted plant that was to be tested for starch was placed in the dark for 48 hours. i)Why was the plant placed in the dark for 48 hours.(2mks) ii)State the factor of photosynthesis being tested.(1mk) 3.State three functions of hydrochloric acid in human stomach.(3mks) 4.Give a reason why the stomach wall is made of thick circular muscles and longitudinal muscle layers.(2mks) 5.State the function of sodium hydrogen carbonate in the pancreatic juice.(1mk) 6.With an aid of a diagram,explain the path followed by a glucose molecule from the small intestines to the heart.(8mks) 7.Give two differences between the circulatory system in man and the one in fish.(2mks) 8.Distinguish between pulmonary and systemic circulation.(2mks) 9.A child was observed to have the following symptoms,a bleeding gum,wounds that have failed to heal: i)Name the deficiency disease the child was suffering from.(2mks) ii)Name the nutrients that was missing in his diet.(2mks) 10.Name the carbohydrate that is; a)Stored in seeds.(1mk) b)Stored in the human liver.(1mk) c)Most abundant in mammalian blood.(1mk) d)Major constituent of milk.(1mk) 11.How are the red blood cells adapted to their functions.(10mks) 12.Where are the red blood cells formed.(2mks)

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