Form 4 Biology Test 1

FORM 4 BIOLOGY TEST 1

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FORM 4 BIOLOGY TEST 1 1 HOUR 30 MINUTES SECTION A (20%) 1. Which of the following is not the study under biology? A. Mycology B. Physiology C. Phycology D. Biochemistry E. All are false 2. Which of the following is not an organelle? A. Lysosome B. Ribosome C. Nucleus D. Cytoplasm E. Golgi Apparatus 3. You will find abundant of Smooth ER in A. Brain cell B. Liver cell C. Pancreatic cell D. Skin cell E. All are false 4. Which of the following is NOT TRUE about TRUE about amoeba sp.? I. It is a prokaryote II. It moved by pseudopodia III. Its reproduction mode is via Binary fission IV. It is a plant cell. A. I and II B. I and III C. I and and IV D. II and III E. II and IV 5. Which of the following organelle involved in cell death? A. Ribosome B. Lysosome C. Smooth ER D. Nucleus JULY 2014

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E. Centriole 6. Which of the following component is not found in chloroplast? A. Thylakoid B. Granum C. Matrix D. Stroma E. Starch granule 7. The role of osmoregulation is played by which organelle in plant cell? A. Lysosome B. Ribosome C. Vacuole D. Golgi Apparatus E. Chloroplast 8. Which of the following is the study of tissue? A. Histology B. Cytology C. Taxonomy D. Genetics E. Physiology 9. Which of the following is NOT a NOT a function of nucleus? A. Control all the activities of cell B. Stored genetics material C. Synthesize lysosome D. Synthesize ribosomal subunit E. All are false 10. Which of the following organelle aids in cholesterol biosynthesis? A. Smooth ER B. Rough ER C. Nucleus D. Golgi Apparatus E. Ribosome 11. Which of the following is NOT RELEVANT with nerve tissue? A. Axon B. Dendrite C. Tendon D. Neurone E. All are false

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12. Adipose tissue is categorized under which of the following tissue? A. Epithelial tissue B. Muscle tissue C. Nerve tissue D. Connective tissue E. All are false 13. Which of the following is NOT an NOT an organ? A. Skin B. Flower C. Bone D. Stem E. All are false 14. You will find abundant of mitochondria in A. Sclerenchyma B. Meristematic C. Xylem D. Collenchyma E. All are false 15. The blood sugar level is regulated by the I. digestive system II. circulatory system III. endocrine system IV. excretory system A. I and II B. II and III C. III and and IV D. I, II and III E. II, III, IV 16. Which of the following is not regulated by homeostasis? A. Blood sugar level B. Secretion of digestive digestive enzymes enzymes into stomach C. Expelling excessive water D. Maintaing body temperature E. All are false 17. Which of the following is organic component? A. Lipids B. Water C. Silver D. Sodium Chloride JULY 2014

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E. All are false 18. Which type of carbohydrate is stored in our liver as an energy source? A. Starch B. Glycogen C. Sucrose D. Cellulose E. Glucose 19. Which of the following is a disaccharide? A. Glucose B. Fructose C. Galactose D. Lactose E. Cellulose 20. What are the products obtained when a molecule of triglyceride is completely hydrolyzed? A. One molecule of ethanol and three three molecule of glycerol B. One molecule of of glycerol and three molecule of fatty acids C. One molecule of of fatty acids and three molecule of glycerol glycerol D. One molecule of of glycerol, fatty acids and and water E. All are false

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SECTION B (40%) a) Distinguish plant cell and animal cell. [6M] b) Briefly explain the functions of the following organelle. [6M] i. Golgi apparatus ii. Rough ER iii. Smooth ER c) List all the types of tissues that make up the connective tissue. Briefly describe the function of each type of tissue named. [8M] a) Describe the structure of plasma membrane. [8M] b) Briefly explain how do the following molecules move across the plasma membrane. [7M] i. Vitamin D ii. Amino acids iii. Potassium ions c) Describe the effect of using too much fertilizer on a plant. [5M]

END OF QUESTION PAPER JULY 2014

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FORM 4 BIOLOGY TEST 1 SCHEME SECTION A 1. E 2. D 3. B 4. D 5. B 6. C 7. C 8. A 9. C 10. A 11. C 12. D 13. C 14. B 15. D 16. B 17. A 18. B 19. D 20. B SECTION B 1. a) Differences between plant and and animal cell. 6M Plant Animal Centrioles Absent Centrioles Present Chloroplast Present Chloroplast Absent Has cell wall (Fixed shaped) No cell wall (irregular shape) Large central vacuole Usually no vacuole, if present, in small and peripheral Stored starch as food granule Stored glycogen as food granule Lysosome usually absent, only Lysosome present present in several plants, i.e. pitcher plant, Nephenthes sp. b) i) Golgi Apparatus 2M - Modified synthesized proteins - Transport the extracellular protein/enzyme via the budding of secretory vesicle to the plasma membrane. - Synthesize lysosome ANY 2 JULY 2014

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c)

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ii) Rough ER 2M - Allow ribosome to attach - Transport protein made from ribosome to Golgi apparatus via transport vesicle. iii) Smooth ER 2M - Cholesterol/Lipids biosynthesis - Detoxification - Transport and stores carbohydrates, lipids and non proteins products ANY 2 f unction. ANY 4 connective 4 connective tissues with 1 function. 8M - Loose connective tissue tendons and ligaments connects muscles, bones and joints. Binds epithelia to underlying tissues and holds organs in place. ANY 1 - Cartilage Act as cushion to absorbs absorbs pressure in vertebrae Provide support to the ears, nose and covered the ends of the bones at joints. ANY 1 - Bone Provide protection to organ and support the body - Blood cells Transport oxygen/hormone, involved in immunity - Adipose tissue Energy reserves, insulation and protection.

a) Plasma Membrane 8M - known as fluid mosaic model - made up of phospholipids bilayer - with polar head and non polar tail. - head facing outward (cystolic surface and extracellular surface) tail facing inward with one another. - has cholesterol embedded within the membrane to provide extra strength and flexibility to stabilize the membrane. - various type of protein partially or wholly embedded in the membrane to form pore protein, carrier protein. - has carbohydrate attach to protein, known as glycoproteins. - has carbohydrate attach to the phospholids, known as glycolipids. - It is dynamic and flexible. - not rigid or static stat ic as cell wall. - selectively permeable/ semi permeable. ANY 8 b) Vitamin D 2M - Simple diffusion as it is fat soluble. - Directly via the phospholipids bilayer.

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- Down the concentration gradient ANY 2 Amino acids 2M - Facilitated diffusion as it is large uncharged polar molecules. - With the aids of carrier protein. - Down the concentration gradient. ANY 2 Potassium ions 3M - Active transport as it is large charged ions. - Utilized ATP as the energy source - Against the concentration gradient. - With the help of carrier protein. ANY 3 c) Excessive fertilizer causes the soil to be hypertonic to plant root. 5M Water diffuses out of the root cells by osmosis. Plant cells lose water to their surroundings and shrink. Plasmolysis occurs. Plant wilts. If no water is provided continuously, it will continue to wilt and eventually the plant dies. ANY 5

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Form 4 Biology Test 1

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