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Biology Grade 10 Unit 5: Human Biology

national exam questions have come from this unit. It runs 59 pages; one careful study pass takes about 6.0 hours, and its difficulty is easier among Biology units. Each section below lists the questions set from it, with the year, and opens the page that teaches it.

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5.1 The Digestive System · read p. 95
  • 2018 E.C., Q3 – What is the role of bile in digestion?
  • 2016 E.C., Q65 – Which one of the following descriptions about absorption of nutrients in the digestive system is correct?
  • 2016 E.C., Q64 – Which one of the following statements is correct about the role of trypsin in digestion? It acts on
  • 2016 E.C., Q63 – Which one of the following statements is correct about the process of digestion in the stomach?
  • 2015 E.C., Q57 – Which one of the following enzymes is correctly matched to the food stuffs it acts on?
  • 2014 E.C., Q38 – One of the following problems can occur if the liver does NOT properly carry out its digestive functions.
  • 2010 E.C., Q56 – Choose the one in which the human digestive enzyme is INCORRECT matched with the substance that it normally catalyzes.
  • 2010 E.C., Q34 – In which organ of the human body are more bacteria found?
  • 2008 E.C., Q35 – Which of the following function best at higher optimum pH than all the rest?
  • 2008 E.C., Q10 – Which part of the human elementary canal contains digestive enzymes that function at acidic pH?
  • 2007 E.C., Q58 – Which one of the following shows the feeding methods of decomposers?
  • 2006 E.C., Q37 – Which of the following mechanism moves digested amino acids and glucose across the plasma membrane of the cell lining the wall of the small intestine?
  • 2006 E.C., Q52 – For a biological detergent to effectively remove oily and greasy dirt, which of the following enzymes should it contain?
  • 2005 E.C., Q48 – To which class of enzymes do the digestive enzymes belongs?
  • 2005 E.C., Q5 – Which of the following classes of enzymes digests carbohydrates?
5.2 The circulatory and lymphatic system · read p. 107
  • 2018 E.C., Q9 – In the ABO blood group system, which blood type can receive blood from any of the four ABO blood types?
  • 2018 E.C., Q8 – Which of the following statements about red blood cells is true?
  • 2017 E.C., Q2 – Consider the following structure of the human heart. In the above diagram, which part is used for forcing oxygenated blood out of the heart and around the body? Question Diagram
  • 2016 E.C., Q90 – Which one of the following statements is well justified, why the left ventricle is tough in nature? Because it
  • 2015 E.C., Q83 – Which one of the following sentences is correct about the activities of the heart?
  • 2015 E.C., Q58 – Which one of the following structures of the heart is correctly matched with its function?
  • 2015 E.C., Q51 – Consider the following diagram showing blood circulation system in the human body. In the above diagram, the parts indicated by numbers 1, 2, 3 and 4 are respectively
  • 2014 E.C., Q13 – The following is a list of functions of the components of blood: Transport of oxygen Fight against diseases Cause blood clotting Which one of the following is a correct order of blood components responsible for the above
  • 2014 E.C., Q7 – Assume you wanted to demonstrate compatibility of blood groups. You took four test tubes labeled O, A, B, and AB based on the blood group that each test tube contains. Then you added unknown blood sample into each test t
  • 2014 E.C., Q14 – What is the cause of the back flow of blood into the atria from the ventricles? It could be damage of the
  • 2014 E.C., Q15 – The capillaries are blood vessels that have thin wall and large surface area since their function is
  • 2012 E.C., Q18 – Which molecule of the plasma membrane contains carbohydrate Chains and allows identification of the cell by the immune system?
  • 2009 E.C., Q35 – Which of the following human cell types is attacked by HIV?
  • 2007 E.C., Q72 – Which of the following is a routine method used by clinics to test people for HIV infection?
5.2.1 Blood Donation · read p. 119
  • 2016 E.C., Q55 – Assume your friend has a blood type that has no antigen on his red blood cells but produces antibodies a and b, loses blood due to a car accident. If blood transfusion is necessary to save his life, your friend can recei
  • 2015 E.C., Q44 – Which one of the following sentences explains the mechanism of bacterium to produce disease?
  • 2013 E.C., Q9 – Bacteria can cause diseases in all of the following mechanisms EXCEPT
5.2.2 Diseases of the circulatory and lymphatic systems · read p. 124
  • 2018 E.C., Q5 – Which structure separates the thoracic cavity from the abdominal cavity and plays a key role in breathing?
  • 2017 E.C., Q12 – Compared to the inhaled air what are the percentage of nitrogen, oxygen and carbon dioxide gases in exhaled air, respectively?
  • 2017 E.C., Q15 – Three students carried out different experiments in exhaled air as indicted below. Student I - uses cold glass and blue cobalt chloride paper Student II - uses ice cubes Student III - uses tube containing lime solution a
  • 2016 E.C., Q86 – According to biological scenario, structure is related to function, which one of the following is correctly described?
  • 2016 E.C., Q88 – What is the scientific reason behind the preference of high altitude areas for training by the Ethiopian Athletes? Because
  • 2016 E.C., Q87 – As compared to the exhaled air, the inhaled air contains
  • 2015 E.C., Q60 – Consider the following figure which demonstrates air movements during breathing using the bell-jar model representing the lung. Which of the following breathing movements happens when air enters into and exits from the b
  • 2014 E.C., Q11 – During gas exchange between the alveoli and blood capillaries, oxygen is absorbed by the blood while carbon dioxide is removed. This opposite direction of gas exchange occurs due to
  • 2014 E.C., Q40 – Assume you are trying to demonstrate breathing movements using artificial lung and you pulled down the rubber sheet. This action of pulling represents which step of the actual breathing process?
  • 2013 E.C., Q10 – Functional diseases differ from infectious diseases in that they
5.3 The breathing system · read p. 136
  • 2016 E.C., Q60 – Which one of the following is a feature of Octopi and squid in phylum mollusca? They have
  • 2015 E.C., Q81 – Which one of the following sentences is correctly matched with the function of kidney structures?
  • 2015 E.C., Q55 – Suppose your friend fails suddenly due to heart attack while he is playing football. The victim needs artificial breathing to keep him alive until medical support arrives. Which activity is strictly prohibited in this si
  • 2014 E.C., Q6 – Why are vaccines important? Because they help to
  • 2014 E.C., Q12 – Identify the correct statement about the effect of exercise on breathing rate.
  • 2005 E.C., Q70 – Which of the following cell types can be rich in lysosomes?
5.6 Renowned Physicians in Ethiopia · read p. 145
  • 2018 E.C., Q4 – Which part of the digestive system is responsible for producing enzymes that digest carbohydrates, proteins, and fats?
  • 2017 E.C., Q7 – Which of the following is correct about the process of digestion or absorption of food in the small intestine?
  • 2014 E.C., Q39 – Which of the following is the correct order of food substance, enzyme, and breakdown product of the digestive process in the stomach respectively?
  • 2006 E.C., Q42 – Into which of the following organic compound can lipase maltase and sucrase be grouped?