ACSI(I) Y4IP 2023 Biology Common Test Paper 1

1 TERM 1 CLASS TEST BIOLOGY Paper 1 Multiple Choice Section A 21 April 2023 1 Hour 45 Minutes Additional materials: Multiple Choice Answer Sheet INSTRUCTIONS TO CANDIDATES Write and shade your index number on the Multiple-Choice Answer Sheet in the spaces provided. Do not open this examination paper until instructed to do so. There are thirty questions on this question paper. Answer all questions. For each question, there are four possible answers, A, B, C, and D. Choose the one you consider correct and record your answer in soft pencil on the Multiple-Choice Answer Sheet provided. Read the instructions on the Multiple-Choice Answer Sheet very carefully. Each correct answer will score one mark. No marks will be deducted for a wrong answer. Any rough working should be done in the question booklet. Electronic calculators may be used. This paper consists of 15 printed pages including this cover page. Anglo-Chinese School (Independent) YEAR 4 INTEGRATED PROGRAMME / SBGE / ACS TERM 2 COMMON TEST

2 Section A: Multiple-Choice Questions 1 The diagram shows the kidney and three tubes associated with it. Where will urea be found? A X, Y and Z B X and Y C Y and Z D Z only 2 About 170 litres of fluid are filtered by the kidneys every day. Only 1.5 litres are excreted in urine. What happens to the remaining 168.5 litres? A it becomes tissue fluid B it is stored in the bladder C it is reabsorbed into the blood D it is lost as sweat 3 Which of the following, when present in urine, shows that a person is diabetic? A glucose B proteins C urea D water 4 What is the function of the cornified layer of the epidermis of human skin? A temperature regulation through sweating B perception of sensations of temperature, pain, and pressure C synthesis of vitamin D D prevention of uncontrolled water loss by evaporation

3 5 The diagrams show skin temperature in a human body when it is exposed to warm air and then exposed to cold air. What causes the observed change in skin temperature on exposure to cold air? A less blood flowing just below the skin B less blood going to the heart and lungs C more blood flowing just below the skin D more blood going to the heart and lungs 6 The graph shows changes in a person’s body temperature plotted against time. What could cause the changes in body temperature in periods 1 and 2? period 1 period 2 A reduced air temperature increased air temperature B reduced air temperature shivering C vigorous exercise increased sweating D vigorous exercise shivering

4 7 The graph below shows the changes in the concentration of a hormone in the blood of a person. Which statement explains the change in the hormone concentration between the points X and Y? A the hormone is being broken down by the liver B the hormone is being excreted by the kidneys C the hormone