AES Pure Bio 2024 P1, P2, MS

Name: ............................................................. ( ) ASSUMPTION ENGLISH SCHOOL PRELIMINARY EXAMINATION 2024 BIOLOGY 6093 / 01 ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL LEVEL: Sec 4 Express DATE: 27 August 2024 CLASS: Sec 4/1 DURATION: 1 hour Additional Materials provided: 1 sheet of OAS paper INSTRUCTIONS TO CANDIDATES Do not open this booklet until you are told to do so. Write your NAME and INDEX NUMBER at the top of this page and on the OAS paper. Shade your index number on the OAS paper. PAPER 1 (40 marks) MULTIPLE CHOICE QUESTIONS There are 40 questions in this paper. Answer all questions. For each question, there are four possible answers A , B , C and D . At the end of the examination, hand in your OAS paper and question booklet separately. This Question Paper consists of 24 printed pages including this page. [Turn over

2 MULTIPLE-CHOICE QUESTIONS [40 marks] For each question, there are four possible answers A, B, C and D . Choose the one you consider correct and record your choice in the OAS paper provided. 1 The diagram shows an electron micrograph of an animal cell. Which row shows the correct identity of 1, 2, 3 and 4? 1 2 3 4 A ribosome smooth endoplasmic reticulum rough endoplasmic reticulum chloroplast B chloroplast smooth endoplasmic reticulum Golgi apparatus mitochondrion C vacuole Golgi apparatus rough endoplasmic reticulum mitochondrion D vacuole rough endoplasmic reticulum smooth endoplasmic reticulum chloroplast 2 Which cells contain DNA? 1 guard cell 6093/01/4E/PRELIM/24

3 2 palisade mesophyll cell 3 sieve tube cell 4 xylem cell A 1 and 2 B 1 and 3 C 2 and 4 only D 2, 3 and 4 3 A peeled potato shaped into a cup was placed in a container. Salt solutions of varying concentrations were poured into the centre of the potato and the rest of the container. The water potential of the potato flesh was determined to be similar to that of a salt solution with a concentration of 0.4 mol/dm 3 . Which row shows the possible concentrations of solutions P and Q ? solution P solution Q A 0.1 mol/dm 3 0.3 mol/dm 3 B 0.2 mol/dm 3 0.6 mol/dm 3 C 0.4 mol/dm 3 0.8 mol/dm 3 D 0.8 mol/dm 3 0.2 mol/dm 3 6093/01/4E/PRELIM/24 [Turn Over

4 4 Identical potato strips were placed in sucrose solutions of varying concentrations. After three hours, the mass of each potato strip was measured. Which graph shows the result of the experiment? A B C D 6093/01/4E/PRELIM/24

5 5 A student carried out tests on a food sample. The results are shown in the table. test observation of sample biuret test violet ethanol emulsion test colourless Benedict’s test orange ppt What did the sample contain? protein reducing sugar fat A ✓ ✓ ✗ B ✓ ✗ ✓ C ✗ ✓ ✓ D ✗ ✗ ✗ 6 Using the ‘lock-and-key’ hypothesis, which row shows the correct identity of the structures in the diagram? 1 2 3 A enzyme key substrate B key enzyme substrate C lock substrate key D lock substrate product 6093/01/4E/PRELIM/24 [Turn Over

6 Refer to the diagram of the human digestive system for questions 7 and 8 . 7 Which option shows the organs that produce enzymes involved in the digestion of proteins? A 1, 3 and 4 B 1, 3 and 8 C 4 and 7 only D 4, 7 and 8 8 Which row does not correctly show the structure matched to its function? structure function A 2 production of lipase B 5 absorption of water C 6 transport of food to the stomach D 8 production of amylase 6093/01/4E/PRELIM/24

7 9 Digestive juices were collected from three different parts of the human alimentary canal. The samples were each dropped into a well made in an agar plate of starch. After 24 hours, iodine solution was added to each well. The results are as follows: well 1 2 3 colour blue-black brown blue-black Which row shows the possible identities of the digestive juices placed in each well? 1 2 3 A pancreatic juice saliva stomach juice B saliva stomach juice pancreatic juice C stomach juice intestinal juice pancreatic juice D stomach juice pancreatic juice intestinal juice 6093/01/4E/PRELIM/24 [Turn Over

8 10 A patient, with blood group B, required a blood transfusion. His friends offered to donate blood to him. Donor X and Y’s donations were accepted, but donor Z’s donation was rejected. Which option shows the possible blood groups of the three donors ? donor X donor Y donor Z A AB B A B AB B O C B O AB D O A B 11 Which row correctly shows the presence of valves in blood vessels? veins arteries capillaries A ✔ ✔ ✔ B ✔ ✘ ✔ C ✔ ✘ ✘ D ✘ ✘ ✘ 6093/01/4E/PRELIM/24

9 12 The diagram represents part of the human circulatory system. Which statement is true? A 2 contains more carbon dioxide than 1. B 3 contains more oxygen than 2. C 4 contains less glucose than 3. D 5 contains less urea than 6. 6093/01/4E/PRELIM/24 [Turn Over

10 13 The graph shows the changes in volume of air in a person’s lungs at rest for a period of 30 s. Which option shows the change in volume of air in the person’s lungs after he has played an intense game of badminton? 14 Which row is true regarding the effects of the components of tobacco smoke? carbon monoxide tar A combines permanently with haemoglobin paralyses cilia B makes blood clot easily higher risk of emphysema C more fatty deposits on walls of coronary arteries reduced ability of blood to carry oxygen D uncontrolled cell division higher risk of lung cancer 6093/01/4E/PRELIM/24