Past Papers Chapter 7

Chapter 7 A) Which of the following pairs would be separated by different configurations? A) Ribosomes , Mitochondria B) Na+ , K+ C) Cl- , H2PO4D) Amino Acids , glucose E) None of the above B) Viruses can be seen by A) Compound microscope B) Dissecting microscope C) Electron microscope D) Unaided eye E) A,B and C C) Which organelle is responsible for the production of membrane proteins? A) 1 B) 2 C) 3 D) 4 E) 5 D) Structure A in the picture functions in all of the following except A Carbohydrate metabolism B Steroids synthesis C Calcium storage D Drugs detoxification E Proteins sorting and packaging E) The middle lamella that joins plant cells together is A) produced by the endoplasmic reticulum B) produced by the Golgi apparatus C) rich in sticky polysaccharides called pectins D) made of cellulose E) B&C are correct F) Which of the following organelles are interconnected and made of membranous sacs called cisternae? A) Golgi apparatus B) Smooth endoplasmic reticulum C) Rough endoplasmic reticulum D) B&C E) All of the above G) Large organisms do not generally have larger cells than small organisms, but simply have more cells, because A) Smaller cells have greater surface area to volume ratio B) Smaller cells have smaller surface area to volume ratio C) Diffusion cannot occur in large cells D) Large cells have fewer metabolic reactions E) Small cells move faster than large cells 1)Which of the following contain the 9 + 2 arrangement of microtubules? A) Cilia B) Centrioles C) Flagella D) A and C only E) A, B, and C 2)Which of the following possesses a micro tubular structure similar to a basal body? A) Centrioles B) Lysosome C) Nucleolus D) Peroxisomes E) Ribosome 3) Which statement correctly characterises bound ribosomes? A) Bound ribosomes are enclosed in their own membrane. B) Bound and free ribosomes are structurally different C) Bound ribosomes generally synthesise membrane proteins and secretory proteins. D) The most common location for bound ribosomes is the cytoplasmic surface of the plasma membrane. E) All of the above. 4) Tay-Sachs disease is a human genetic abnormality that results in cells accumulating and becoming clogged with very large and complex lipids. Which cellular organelle must be involved in this condition A) The endoplasmic reticulum B) The Golgi apparatus C) Lysosomes D) Mitochondria E) membrane-bound ribosomes 5)Which is one of the main energy transformers of cells? A) Lysosome B) Vacuole C) Mitochondrion D) Golgi apparatus E) Peroxisomes 6) Which of the following contains its own DNA and ribosomes? A) Lysosome B) Vacuole C) Mitochondrion D) Golgi apparatus E) Peroxisomes 7) A cell has the following molecules and structures: enzymes, DNA, ribosomes, plasma membrane, and mitochondrion, it could be a cell from A) A bacterium. B) An animal, but not a plant. C) A plant, but not an animal. D) A plant or an animal. E) any kind of organism. 8)Cyanide binds with at least one molecule involved in producing ATP. If a cell is exposed to cyanide, most of the cyanide would be found within the A) mitochondria. B) Ribosomes. C) Peroxisomes. D) Lysosomes. E) Endoplasmic reticulum. 9) The liver is involved detoxification of many poisons and drugs. Which of the following structures is primarily involved in this process and therefore abundant in liver cells? A) Rough ER B) Smooth ER C) Golgi apparatus D) Nuclear envelope E) Transport vesicles 10) 49)Which of the following produces and modifies polysaccharides that will be secreted? A) Lysosome B) Vacuole C) Mitochondrion D) Golgi apparatus E) Peroxisomes 11) Which type of organelle is primarily involved in the synthesis of oils, phospholipids, and steroids? A) Ribosome B) Lysosome C) Smooth endoplasmic reticulum D) Mitochondrion E) Contractile vacuole 12) Which of the following contains hydrolytic enzymes? A) Lysosomes B) Vacuole C) Mitochondrion D) Golgi apparatus E) Peroxisomes 13) Which of the following are capable of converting light energy to chemical energy? A) Chloroplasts 8) Mitochondria C) Leucoplasts D) Peroxisomes E) Golgi bodies 14) Which of the following is a function of cell wall? A) Prevent excessive uptake of the water B) Protection C) Maintain the cell shape D) Holding plant against gravity E) All of the above 15) Which of the following is true about free ribosomes? A) It is attached to the nuclear envelope B) It is attached to the ER C) They produce the proteins that must be secreted out the cell D) Producing cytoplasmic proteins E) None of the above 16) ------------------------- is a framework of protein fibres extending throughout the nuclear interior A) Nuclear lamina B) Nuclear matrix C) Middle lamella D) Pore complex E) None of the above 17) For studying Phagocytosis (Lysosome function) , the best cells used to study it: A) Liver cells B) Red blood cells C) Macrophages D) Skin cell E) None of the above 18) The main function of cell fractionation? - Separation of major organelles and sub-cellular components 19) Which of the following is not a function of cytoskeleton? A) Transporting of molecules into the cell B) Transporting of molecules within the cell C) Providing structure and shape D) Anchoring the cell E) Cell movement 20) Which of the following organelles is absent in plant cells? A) Plasma membrane B) Cell wall C) Chloroplast D) Central vacuole E) Centrosome 21) Grana and thylakoid can be found in: A) Mitochondria B) Chloroplasts C) Golgi D) Rough ER E) Peroxisomes 22) All of the following is found in prokaryotic cells except A) DNA B) Chromosomes C) Ribosomes D) Cytosol E) Nuclear envelope 23) Which of the following organelles responsible of proteins synthesis A) Ribosomes B) Lysosomes C) Mitochondria D) Microtubule E) Nucleus 24) Large number of ribosomes can be found in cells that produce: A) Proteins B) Carbohydrate C) Lipids D) DNA E) RNA 25) Which type of junctions establishes a barrier that prevents leakage of extracellular fluid across a layer of epithelial cells? A) Tight Junction B) Gap junction C) Desmosomes D) Plasmodesmata E) None of the above 26) Ribosomes can be seen by: A) Light microscope B) Electron microscope C) Unaided eye D) None of the above E) All of the above 27) Under which of the following conditions would you expect to find a cell with a predominance of free ribosomal? A) A cell that is secreting proteins B) A cell that is producing cytoplasmic enzymes C) A cell that is constructing its call wall or extracellular matrix D) A cell that is digesting food particles E) A cell that is enlarging its vacuole 28) Materials from one animal cell can enter adjacent cell by : A) Tight Junction B) Gap Junction C) Desmosome D) Microfilament E) Intermediate filament 29) Microtubules are not involved in? A) Cilia B) Flagella C) Movement of organelles D) Cell division E) Amoeboid movement 30) The plant cell's central vacuole : A) Play a major role in growth B) Store nutrient C) Reservoir of Inorganic ions D) Occupied large space of the cell E) All of the above 31) The nuclear envelope is directly connect to: A) Endoplasmic reticulum B) Golgi apparatus C) Lysosomes D) Peroxisomes E) Food vacuole 32) Which of the following found in both bacteria and plant cells: A) Chloroplasts B) Cell wall C) Nucleus D) Mitochondria E) None of the above 33) The figure represents: A) Prokaryote B) Eukaryote C) Animal cell D) Plant cell E) Protists 34) Which oF the following is a function of the smooth ER? A) Detoxification of drugs B) Storage of calcium Ions C) Synthesis of lIpIds D) Synthesis of Glycoproteins and secretory proteins E) All of them except (D) 35) The organelle that can carry out (Autophagy process) ls: A) Golgi B) ER C) Nucleus D) Mitochondria E) Lysosomes 36) The correct pathway of secretory proteins: A) Rough ER - Lysosome - Golgi - Plasma membrane B) Smooth ER - Golgi - Transport vesicles - Plasma membrane C) Rough ER - Golgi - Transport vesicle - Plasma membrane D) Golgi - Lysosome - Plasma membrane E) None of the above 37) The type of junction that can be seen between heart (Cardiac muscles) is A) Tight junction B) Gap junction C) Desmosomes D) Plasmodesmata E) None of the above 38) Which of the following IS FALSE about lysosomes: A) Can digest food and damage organelles B) They are membranous C) Contain hydrolytic enzymes D) Has basic environment E) All of the above is true 39) Cell wall can be found : A) Plant cells only B) Animal cells only C) In both animal and plant cells D) In plant cells and some prokaryote E) Any of the above 40) Which of the following is correct? A) Larger organisms have larger cells B) Larger organisms have more cells C) Surface area to volume ratio is large in smaller cells D) Surface area to volume ratio is small in smaller cells E) Both B and C are correct 41) According to the figure , (A) represent: A) Lysosome B) Food vacuole C) Contractile vacuole D) Peroxisomes 42) Chloroplasts and mitochondria have in common a : A) Both of them bounded by double membrane B) Both of them contain DNA C) Both of them involved in energy conversion D) Both of them involved in digestion of food E) All of them true except of (D) 43) Which of the following is a compartment that often takes up much of the volume of a plant cell A) Lysosome B) Vacuole C) Mitochondrion D) Golgi apparatus E) Peroxisomes ANSWERS A. B. C. D. E. F. G. A C B E E D A 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) 12) 13) 14) 15) 16) 17) 18) 19) 20) 21) 22) 23) 24) 25) 26) 27) 28) 29) 30) 31) 32) 33) 34) 35) D A C C C C D A B D C A A E D B C … A E B E A A A B B B E E A B A E E 36) 37) 38) 39) 40) 41) 42) 43) C B D D E B E B ‫ى‬ ُ ُُ ُ ُُ ُُ ُ ُُ ُُ ُ ُ ُ ُ ُُ ُُ ُ ُُ ُُ