Mayflower 2019 Bio Prelim P1 QP

[Turn Over Name Reg. No Class MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL MAYFLOWERSECONDARY SCHOOL 4EX BIOLOGY 6093/01 Paper 1 Multiple Choice [40 Marks] PRELIMINARY EXAMINATION Additional Materials: Approved calculator OTAS September 2019 1h o u r Instruction to Candidates Do not start reading the questions until you are told to do so. Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class, and index number on the OTAS provided. Information for Candidates There are forty questions on this paper. Answer allquestions. For each question, there are four possible answers A,B,CandD. Choose the oneyou consider correct and record your choice in soft pencilon the OTAS. Read the instructions on the OTAS very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate. This question paper consists of 20printed pages. Setter: Mr Timothy Ng Vetter: Mrs Marie Huang www.KiasuExamPaper.com 326

2 1The diagram shows the magnified structure of an animal cell und er an electron microscope. What are the functions of the labelled structures? synthesizing protein from amino acids exporting proteins out of the cell modify, store and package proteins A 12 3 B 13 2 C 31 2 D 32 1 2The diagrams below show several different types of human cells. Which of the following statements is correct? AAll the cells can move. BAll the cells can undergo cell division. CAll the cells have a nucleus. DAll the cells have a plasma membrane. 2 3 1 www.KiasuExamPaper.com 327

3 [Turn Over 3The diagram shows the structure of a leaf. Which letter identifies a cell, a tissue and an organ? Cell Tissue Organ A 324 B 143 C 412 D 231 4The diagram shows three plant cells labelled P, Q and R. The arrow shows the movement of water by osmosis. What is the correct order of water potential in the cells, from the highest to the lowest? Highest Middle Lowest A PQ R B PR Q C QP R D RP Q www.KiasuExamPaper.com 328

4 5Which of the following correctly states a difference between diffusion and osmosis? Diffusion Osmosis A against a concentration gradient along a concentration gradient B does not require energy requires energy C requires a partially-permeable membrane does not require a partially- permeable membrane D involves all particles involves mainly water molecules 6The light micrograph below shows the appearance of some onion cells after they had been placed in a concentrated salt solution for some time. Identify X and the condition of the cells above. XC o n d i t i o n o f c e l l s A cell membrane crenated B cell membrane plasmolysed C cell wall crenated D cell wall plasmolysed 7Which of the following correctly states the digestion of sucrose? nutrient enzyme products of digestion A sucrose amylase glucose only B sucrose lactase glucose and galactose C sucrose lipase fatty acids and glycerol D sucrose sucrase glucose and fructose X www.KiasuExamPaper.com 329

5 [Turn Over 8Five disaccharides were each hydrolysed with dilute acid and the purified products were separated by chromatography. The results are shown in the diagram below. 12345 Spot 1 in the diagram represents the products obtained from the hydrolysis of sucrose. Which of the following represents the results obtained from the hydrolysis of lactose and maltose? lactose maltose A 23 B 24 C 52 D 53 9A student tested his fluid lunch in the following ways and got the results as shown. Treatment Results Added 1 ml of alcohol followed by water 1 ml of water to a sample of the fluid lunch. A white emulsion was formed. Added 1 ml of Biuret solution to a sample of the fluid lunch. The Biuret solution turned violet. Added 2 ml of Benedict's solution to a sample of the fluid lunch and placed it in a boiling water bath for 3 minutes. The Benedict's solution turned into a brick-red precipitate. Added 3 drops of iodine solution to a sample of the fluid lunch. The iodine solution remained brown. The food substances present in the lunch could contain some of the following nutrients: 1. fat 2. protein 3. reducing sugar 4. starch From the results of the tests, which of the nutrients were present in his lunch? A1 and 3 only B1, 2 and 3 only C1, 3 and 4 only D2, 3 and 4 only www.KiasuExamPaper.com 330

6 10An experiment was carried out to investigate the digestion of starch using amylase at two different temperatures. A sample was removed from each mixture at 15 seconds intervals and placed into a spotting tile well containing two drops of iodine solution. The results are shown in the diagram. Which of the following shows the correct temperatures and times for the complete digestion of starch? Time for digestion of starch / s 10°C 30°C A 0.45 19.50 B 19.50 0.45 C 45.00 195.00 D 195.00 45.00 11The diagram shows the structure of a villus found in the small intestine. The arrows show the direction of flow of the fluids from the products of digestion absorbed by the villus. After a meal, where will you find the highest concentrations ofamino acids and glucose? amino acids glucose A KN B LM C MM D NN lacteal lacteal K L N M lacteal villus epithelium capillary network lacteal www.KiasuExamPaper.com 331

7 [Turn Over 12Which of the graphs below represent starch digestion along the alimentary canal? 13The diagram shows an experiment which was carried out to investigate photosynthesis. What were the colours of regions Q, and R, after the leaf had been tested for starch using iodine solution? QR A blue-black brown B brown brown C blue-black blue-black D brown blue-black starch concentration location along alimentary canal mouth oesophagus stomach ileum A B C lt i l D www.KiasuExamPaper.com 332

8 14An experiment is set up as shown. The volume of gas collected is measured after 30 minutes. The experiment is repeated several times. Each time the light intensity is increased. Which graph shows the results? www.KiasuExamPaper.com 333

9 [Turn Over 15The chart shows the average number of chloroplasts in each of three different types of leaf cell. What are the three types of leaf cell? 123 A guard cell palisade mesophyll cell spongy mesophyll cell B palisade mesophyll cell spongy mesophyll cell guard cell C spongy mesophyll cell guard cell palisade mesophyll cell D spongy mesophyll cell palisade mesophyll cell guard cell 16In cell tissue culture, cells are taken from the parent plant and grown in a cell culture. From which part of the plant would cell samples be taken so that the n e w p l a n t s w o u l d b e genetically identical to the parent plant? A B C