CHIJ St Nicholas 2016 Bio Prelim P1 QP

2 5158/01/Prelim/2016 1. Which of the following correctly identifies the level or organisation of these components of the human body? 1) blood 2) brain and spinal cord 3) eye 4) ovum cell tissue organ organ system A 1 4 2 3 B 1 4 3 2 C 4 1 2 3 D 4 1 3 2 2. The diagram shows parts of an animal cell. What is the order in which the various organelles are involved when the cell secretes a peptide hormone? A6 Æ 2 Æ 4 Æ 1 B6 Æ 3 Æ 2 Æ 1 C5 Æ 3 Æ 4 Æ 1 D5 Æ 6 Æ 2 Æ 1 125 trendylineee?? ÆÆ1 ÆÆ1 Æ1

3 5158/01/Prelim/2016 3. The diagram shows 4 cells with different solute concentrations. Which of the following correctly states what would happen in the cells immediately after they were placed next to each other? 1) Solutes would move from cell 1 to cell 4 via diffusion 2) Solutes would move from cell 4 to cell 1 via diffusion 3) Water would move from cell 2 to cell 3 via osmosis 4) Water would move from cell 3 to cell 2 via osmosis A1 and 2 C2 and 3 B1 and 4 D3 and 4 4. The diagram shows the appearance of a plant cell in an isotonic solution. Which of the following best illustrates the cell after it was immersed in a hypertonic solution for 15 minutes? 126 y

4 5158/01/Prelim/2016 5. Which of the following statements are true about the importance of water in the human body? 1) Acts as reactant in hydrolysis 2) Aids in transport of carbon dioxide 3) Enables survival in extreme cold 4) Protects growing foetus A1 and 2 C1, 2 and 4 B2 and 3 D2, 3 and 4 6. Two different patients with different medical conditions are shown below: Patient X: gall bladder removal surgery due to gallstones Patient Y: kidney failure due to long-term diabetes Which of the following correctly shows the results of food tests performed on the urine and faecal sample of these two patients? Benedict’s test Biuret test Ethanol emulsion test X Y X Y X Y A + + + + + + B + - + - - - C - + - + + - D - - - - + - +: positive result –: negative result 7. The diagram shows changes made to a nutrient present in the human body. Which of the following substances may play a role in causing this change? 1) amylase 2) insulin 3) glucagon 4) lipase A1 and 2 C2 and 3 B1 and 3 D2 and 4 127 n gongon CC trendyline2 and 3

5 5158/01/Prelim/2016 8. Which of the following graphs represents the effect on temperature, enzyme concentration and pH respectively on enzyme activity? temperature enzyme concentration pH A B C D 9. Which function of the liver is correctly paired with the chemical involved? function chemical A deamination glycogen B detoxification alcohol C excretion urea D storage starch 128 trendyline

6 5158/01/Prelim/2016 10.The diagram shows an investigation about the action of digestive enzymes. Which of the following substances when added inside the beaker will cause the greatest reduction in the length of the egg white strip? Apepsin + distilled water Bpepsin + hydrochloric acid Cboiled pepsin + distilled water Dboiled pepsin + hydrochloric acid 11.The graph shows stomatal opening and closing in the leaves of a species of Perlargonium, over a 24-hour period. Which conclusions can be made from the graph? 1) Stomata open as light intensity increases. 2) Stomata open as temperature increases. 3) Transpiration is faster when light intensity increases. 4) Photosynthesis occurs only when there is light. 5) Respiration occurs all the time. A1 and 2 C3 and 4 B1 and 3 D3 and 5 129 trendylineration occurs all the at time. CC3 and 43 and DD3 and 5and

7 5158/01/Prelim/2016 12.The graph shows some of the effects of light intensity, carbon dioxide, and temperature on the rate of photosynthesis. Which factor is limiting the rate of photosynthesis at points X, Y and Z? X Y Z A light intensity carbon dioxide concentration temperature B carbon dioxide concentration light intensity temperature C temperature carbon dioxide concentration light intensity D light intensity temperature carbon dioxide concentration 130 trendyline

8 5158/01/Prelim/2016 13.The Venn diagram shows the relationship between a phloem sieve tube, xylem vessel, and companion cell. Which row is correct? 1 2 3 4 5 Acompanion cell cytoplasm present phloem sieve tube nucleus absent xylem vessel Bcompanion cell nucleus present phloem sieve tube cytoplasm present xylem vessel Cphloem vessel mitochondria present companion cells nucleus present xylem vessel D xylem vessel cytoplasm absent phloem sieve tube vacuole present companion cell 14.The diagram shows a longitudinal section of the vascular bundle o f a pl ant. So me s oil- borne fungi affect crop growth by growing as shown. Which process will be directly affected by these fungi? Acohesion between water molecules Bdevelopment of root pressure Cflow of dissolved substances during translocation Duptake of water by root hair cells 131 trendylineetween water moleculesetween water molecules nt of root pressurent of root pressur olved substances during translocationolved substances during translocation water by root hair cells

9 5158/01/Prelim/2016 15.Each set of graphs represents data for blood vessels in the sequence: art a c v vein artery arterioles capillaries venules veins Which set is correct? 132

10 5158/01/Prelim/2016 16.One type of congenital heart defect is called an atrial septal defect (ASD) where the left and right atria are not completely separated. Which row describes the effects of ASD on blood pressure and oxygenation? blood pressure in pulmonary artery blood pressure in aortapercentage oxygenation of blood in pulmonary artery A decreased increased decreased B decreased increased increased C increased decreased decreased D increased decreased increased 17.The following changes take place in an athlete’s body during a 100-meter race. 1) Increased availability of oxygen to muscles 2) Increased breathing rate 3) Increased production of carbon dioxide by muscles 4) Increased lactic acid concentration in the blood Which of the following shows the correct order of sequence? first last A 2 1 3 4 B 2 3 4 1 C 3 2 1 4 D 3 1 2 4 133 trendyline 1 2 4

11 5158/01/Prelim/2016 18.The graph shows changes in the air pressure within the lungs during one breathing cycle. What causes the change in air pressure during stage X? AContraction of diaphragm muscles BOutflow of air from lungs CIncrease in volume of lungs DRelaxation of internal intercostal muscles 19.The bar charts show the relative amounts of four substances in the blood entering and leaving a certain organ in the body of a mammal: This organ is probably… Akidney Bliver Clung Dsmall intestine 134 trendyline