Cell Components Answer Key

1) A prokaryotic cell does not contain ----------- : A. Nucleic acid molecules B. Flagella c. Ribosomes D. A plasma membrane E. Membrane bound nucleus 2) DNA nucleotide differ from RNA nucleotide because DNA contains --------- : A. Purine not pyrimidine nucleic acid B. Phosphodiester bond not found in RNA C. Deoxyribose sugar rather than ribose sugar D. Phosphate groups not found in RNA E. Adenine base not found in RNA nucleotides 3) Which of the following contains phospholipids ? A. Plasma membrane B. Butter C. Corn oil D. Starch 4) Which of the following contains 9+2 pattern of microtubules : A. Cilia B. Centrioles C. Flagella D. A and C only E. None of the above E. Cellulose 1) 2) 3) 4) E C A D 5) The inner nuclear membrane is lined by -------- : A. Nuclear lamina B. ER c. Nuclear sap D. Chromatin E. None of the above 6) Which of the following statements about ribosomes is false ? A. Are sites of protein synthesis B. May be free or bound to ER C. Are made up o two subunits D. Are membrane bound organelles 7) Nucleic acids are polymer of : A. Nucleotides B. Amino acids C. Fatty acids 8) Which of the following contains ester bonds ? A. Starch B. Cellulose C. DNA D. Lipids D. Nucleoside E. C and D 9) Which of the following is not a component o ECM (Extracellular matrix) ? 5) A 6) D A. Collagen B. Proteoglycan C. Fibronectin D. Tubulin E. None 7) A 8) E 9) D 10) Which of the following is not true for chloroplasts ? A. Surrounded by double membrane B. Posses grana C. Contain Chlorophyll D. Contain DNA and ribosomes E. Present only in prokaryotic cells 11) The alpha helix and B-Plated sheet are two forms of which protein structure? A. Primary B. Secondary C. Tertiary D. Quaternary E. All of them ) The ter used for a ha ge i protei ’s D shape or o for atio due to disruption of hydrogen bonds or disulfide bridge or ionic bonds is : A. Renaturation B. Denaturation C. Hydrolysis D. Digestion E. None 13) All of the following is true for lipids except ? A. They are all soluble in water B. They are an important constituent of cell membranes C. They include steroids D. They are not true polymers 10) E 11) B 12) B 13) A Referring to the following figure : 14) The molecule shown may be in all following except: A. Hemoglobin B. Insulin C. Anti-body D. Cholesterol E. Enzymes 15) The bonding of the two molecules shown in the figure requires : A. The release of water molecule B. The addition of water molecule C. The addition of nitrogen atom D. The addition of SH group E. The release of CO2 molecule 16) The two molecules shown in the figure has : A. Different COOH groups B. Different NH2 groups C. Alkaline R group 14) D D. Different side chains (R groups) E. Symmetric alpha carbons 17) The bond that form between two molecules is called ? A. Peptide B. Hydrogen C. Ester D. Hydrogen E. Covalent 15) A 16) D 17) A Referring to the figure : 18) What do organelles Z and K have in common ? A. Both contain DNA B. Both contain ribosomes C. Both are present in animal cells D. Both can convert energy from one form to another E. A , B and D are correct 19 ) Structure F represent --------- : A. Tight junction B. Desmosome C. Plasmodesmata D. Gap junction 20) Which of the following can be found in nucleus ? A. DNA B. RNA C. Nucleolus D. A and C E. A,B and C 21) White blood cells engulf bacteria by a process called ----- ? A. Autophagy B. Autolysis C. Phagocytosis D. Denaturation 18) E 19) C 20) E 21) C 22) The organelle represented by the letter (V) in the figure : A. Surrounded by tonoplast B. is part of endomembrane system V C. Controls plant cell growth D. Stores a variety materials E. All of the above 23) Grana and stroma are components found in ------- : A. Contractile vacuoles B. Chloroplasts C. Nuclei D. Lysosomes 24) Which structure is the site of the synthesis of secretory protein ? A. Rough ER B. Peroxisome C. Tight junction D. plasmodesmata 25) Which of the following are able to form a bilayer in water ? A. Oil B. Phospholipids C. Steroid hormone D. Chitin E. RNA 22) E 23) B 24) A 25) B 26) D 27) C 28) B 29) A 30) B 26) Which organelle function in detoxification of drugs ? 27) Which organelle is responsible for modification and shipping of secretory protein ? 28) Which organelle contains thylakoids ? 29) Which organelle involved in cellular respiration ? 30) Which organelle does not belong to endomembrane system ? A. Lysosome B. Mitochondria C. Central vacuole D. ER E. Golgi 31) Water spider (an insect) can walk on the surface of a pond because water has : A. Low heat of vaporization B. High surface tension C. High specific heat D. Low specific heat E. B and D 32) If guanine makes up 24% of nucleotides in a sample of DNA , then adenine would make up ---------- : A. 24% B. 26% C. 48% D. 52% E. cannot be determined 33) What is the molecules illustrated in the figure ? A. Saturated fatty acid B. Glucose amine C. Nucleotide D. Purine E. Steroid 31) B 32) B 33) E Use the following choices (A-E) to answer these questions A. Lysosome B. Central vacuole C. Mitochondria D. Golgi apparatus E. Peroxisome 34) D 35) A 36) E 37) B 38) D 34) Produce modifies polysaccharides that will ne secreted by the cell 35) Contains hydrolytic (Digestive) enzymes 36) Contain enzymes that transfer hydrogen from any substrate to oxygen and producing H2O2 37) A versatile plant compartment that may hold reserves of organic compounds or inorganic ions 38) Glycogen in animals is functionally most similar to -------- in plants ? A. Cellulose B. Chitin C. protein D. Starch E. glycogen 39) The chemical mechanism by which cells make polymers from monomers is called --------A. Hydrolysis B. Dehydration reaction C. Ionic bond 4. Hydrogen bonding 40) Glycosidic linkages are usually present in : A. Proteins B. Amino acids C. Nucleic acids D. Starch E. Monosaccharide 39) B 41) Water is a good solvent for the following except ? 40) D A. Olive oil B. Nacl C. Glucose D. Ethanol E. Small polar molecules 41) A 42) D 43) D 42) The upper limit of a cell size determined by the --------- : A. Cell wall B. Amount of organelles inside the cell C. Plasma membrane D. Ratio of surface to volume E. Both A and C 43) The nucleus is bounded by ------- : A. Single membrane B. Tonoplast C. Thylakoid membrane D. Double membrane Refer to the following figure : 44) Organelle X is called : A. Central vacuole B. Food vacuole C. Contractile vacuole D. Lysosome 45) Organelle Y is called : A. Central vacuole B. Food vacuole D. Lysosome E. Transport vesicle 46) Organelle Y is formed by : A. Phagocytosis B. Pinocytosis D. Receptor mediated endocytosis C. Contractile vacuole C. Exocytosis E. None of the above 44) D 45) B 46) A 47) The amount of heat required to increase the temperature of 1 g of water 1 C is defined as : A. Specific heat B. Polarity c. Cohesion D. PH E. None of the above 48) Which of the following organelles is bounded by single membrane : A. Mitochondria B. Chloroplast C. Nucleus D. Ribosomes E. Peroxisome 49) Which is false about plant cell wall ? A. It protects plant B. It maintains cell shape C. It contains cellulose D. It consist of phospholipid bilayer E. It prevent excessive uptake of water 50) Which of the following structure – function pairs is mismatched ? A. Nucleolus ---- Ribosome production B. Lysosome ---- Intracellular digestion C. Ribosomes ---- Protein synthesis D. Golgi ----- Protein modification E. Microtubule ---- Muscle contraction 47) A 48) E 49) D 50) A 51) The functional group(s) of glucose is (are) : A. Ketone B. Aldehyde C. Hydroxyl D. (A and B) 52) Cellulose is : A. Storage polysaccharide D. soluble in water E. (B and C) B. Structural polysaccharide C. helical polymer E. None of the above 53) Lipids share one important trait : A. Polymers B. Hydrophilic C. Hydrophobic E. Formed by dehydration reaction D. triglycerol 54) All of the following is true about fats except of : A. Energy storage B. it contains saturated fatty acids only C. It is formed by dehydration reaction D. it is isolate the body of marine animals from cold water 51) E 52) B 53) C 54) B 55) C 55) Which of the following is not found in RNA ? A. Uracil B. Guanine C. Deoxyribose D. Ribose E. Phosphodiester bond 56) Which term include all others in the list ? A. Monosaccharide B. Disaccharide C. Starch D. Carbohydrate E. Polysaccharide 57) The molecular formula for glucose C6H12O6 , What would be the molecular formula for a polymer made of a linkage of 10 molecules of glucose together : A. C60H120O60 B. C6H12O6 C. C60H102O51 56) D D. C60H100O50 E. C60H111O51 57) C 58) D 58) Which of the following is not a protein ? A. Hemoglobin B. An antibody C. An enzyme D. Cholesterol E. Insulin 59) Which of the follo i g state e t a out the 5’ e d of a poly u leotide strand is correct ? A. The 5’ end has a h dro l group 59) B B. The 5’ end has a phosphate group 60) A C. The 5’ end is identi al to the 3’ end 61) E D. The 5’ end is antiparallel to 3’ end 62) D E. The 5’ end is the fifth position on one of the nitrogenous ases 60) Which of the following is not true polymers ? A. Steroids B. Proteins C. Carbohydrates D. All of them are polymers 61) One of the following is insoluble in water ? A. CH3-CH3 B. Cotton C. Cellulose D. None of the above E. A and C 62) Which bonds are broken down when water vaporize ? A. Ionic bonds B. Non polar bonds C. Covalent bond D. Hydrogen bonds E. None of the above 63) The structural level of protein least affected by disruption of Hydrogen bonding is : A. Primary B. Secondary C. Tertiary D. Quaternary E. All of the above 64) Which of the following is wrong about unsaturated fats : A. It consists of unsaturated fatty acids B. It Liquid at room T C. It has a kinks because of Trans double bond D. Animal fats are examples E. Both C and D are not true about it 65) The bond between nucleotides that form the nucleic acids are : A. Peptide bond B. Phosphodiester bond C. hydrogen bonds D. Covalent bond E. Glycosidic linkage 66) Which of the following is responsible of protein synthesis ? A. Nucleus B. Ribosomes C. Nuclear envelope D. Golgi 63) A 64) E 65) B 66) B 67) Nucleoside is consists of : A. Pentose + Phosphate group C. Phosphate group + Nitrogenous base 67) B B. Pentose + Nitrogenous base 68) D 69) B D. None of the above 70) C 71) C 68) The quaternary structure is represented by letter ? A – B – C – D 69) The B- Plated sheets are represented by letter ? A – B – C – D 70)T he disulfide ridge are fou d i ……… ? A – B – C – D 71) The structure which stabilized by interaction between side chains are represented by letter ? A – B – C – D 72) The difference between the 20 types of amino acids due to difference in ? 72) D A. Side chain B. R group C. Amino group D. Both A and B 73) D E. None of the above 74) D 73) Which type of cells probably provide the best opportunity to study lysosomes A. Muscle cell B. Nerve cell C. Bacterial cell D. Phagocytic white blood cell 5. Leaf cell of a plant 74) Which of the following is the most likely pathway for movement of the secretory proteins in the cell ? A. ER ---- Golgi ---- Nucleus B. Golgi ---- ER ---- Lysosomes C. Nucleus ---- ER ---- Golgi D. ER ---- Golgi ----- Vesicles ---- Fusing with plasma membrane E. ER ---- Lysosome ---- Vesicles ---- Fusing with plasma membrane 75) Both X and Y called --------- bond . A. Hydrogen B. ionic C. covalent D. Peptide E. Ester 76) Bo d X is i ol ed i ------------- of water molecule. A. Polarity B. Adhesion C. Cohesion D. Electronegativity E. Hydrophobic clinging. 77) Bond Y is i ol ed i ------------ of water molecules. A. Polarity B. Adhesion C. Cohesion D. Electronegativity D. Hydrophobic clinging 78) The figure below show : A. Surface tension B. Cohesion C. Adhesion D. Polar 79) Which type of microscopes can be used to see ribosomes ? 80) Which part of cell responsible for synthesis of ribosomes? 75) A 76) B 77) C 78) A