Microquiz Midterm PDF

1. Cellulose is an example of a. Exoenzymes b. Endoenzymes c. Catalytic enzymes d. Hydrolases 2. The study of the interactions between living organisms and the world around them. a. Microbiology b. Entomology c....

1. Cellulose is an example of a. Exoenzymes b. Endoenzymes c. Catalytic enzymes d. Hydrolases 2. The study of the interactions between living organisms and the world around them. a. Microbiology b. Entomology c. Ecology d. Biochemistry 3. The following processes require energy EXCEPT a. Growth b. Reproduction c. Sporulation d. All of the choices are correct 4. Which of the following is used by chemotrophs as an energy source? a. Organic chemicals b. Inorganic chemicals c. Both d. Neither 5. What is the end product of fermentation in yeasts? a. Glycogen b. Methanol c. Glycine d. None of the above 6. How many ATP is produced in anaerobic respiration? a. 2 b. 4 c. 34 d. 38 7. Enzymes produced within a cell that remain within the cell to catalyze internal reactions a. Exoenzymes b. Endoenzymes c. Catalytic enzymes d. Hydrolases 8. What is the product in glycolysis? a. Glucose b. Pyruvic acid c. Fructose d. Glyceraldehyde 9. Major source of a cell's energy? a. Breaking bonds b. Forming bonds c. Synthesis of glucose d. Storing of glycogen 10. Enzymes are catalyst made up of a. Carbohydrates  b. Lipids c. Proteins d. A and C only 11. Which of the following uses carbon dioxide as their source of carbon? a. Photoheterotrophs b. Photoautotrophs c. Chemoheterotrophs d. Photochemotrophs 12. Enzymes are not altered or consumed during chemical reactions hence they last forever. a. True b. False 13. The following factors affect enzyme efficiency EXCEPT. a. pH b. Temperature c. Presence of inhibitors d. All the choices are correct 14. When is energy released? a. Chemical bonds are formed b. Decrease in heat content of system c. Energy is released during biosynthesis reactions d. None of the choices is correct 15. A bacterial cell becomes genetically transformed following the uptake of DNA fragments (naked DNA) from its environment. a. Conversion b. Transduction c. Transformation d. Conjugation 16. Whenever an atom, ion, or molecule loses one or more electrons in a reaction, the molecule is said to be. a. Reduced b. Oxidized c. Catabolized d. Anabolized 17. Which of the following is true for enzymes? a. Catalyze more than one chemical reaction b. Exerts its effect on one substance c. Enzymes are sensitive to different chemical reactions d. None of the choices is true 18. What is the definition of metabolism? a. The sum of all reaction extracellularly b. The sum of all reaction intracellularly c. The sum of all reaction inside and outside the cell d. None of the choices 19. Which of the following is anaerobic? a. Glycolysis b. TCA c. ETC d. None of the above 20. Where does the TCA cycle occur in prokaryotes?  a. Mitochondria b. Nuclear membrane c. Cell membrane d. Cell wall 21. 81 colonies plated on a 1/100,000 dilution a. 8.1x105 b. 8.1x107 c. 8.1x104 d. 8.1x106 22. Involves the absorbing of the required chemicals from the environment for use in metabolism. a. Growth b. Logarithmic phase c. Nutrition d. Colony formation 23. Which of the following is used in cell transport? a. P b. Na c. Ca d. Fe 24. Growth phase of bacteria where growth stops a. Lag b. Log c. Plateau d. Death 25. The following are needed in minute amounts EXCEPT a. K b. Mg c. P d. Ca 26. Cells placed in a hypotonic solution will undergo. a. Plasmoptysis b. Lysis c. No change d. None of the choices 27. Growth mean increase in a. Size b. Number c. Both d. Depends on the bacteria 28. Each colony represents which of the following a. One cell b. 10 cells c. 100 cells d. 1000 cells 29. Which of the following bacteria requires oxygen at low levels? a. Obligate aerobes b. Anaerobes c. Aerotolerant  d. Microaerophilic 30. Using transport proteins require input of energy a. True b. False 31. Which of the following is a constituent of amino acids in some proteins and coenzymes? a. S b. N c. O d. C 32. Which of the following is a qualitative test of growth? a. Viable count b. Direct count c. Turbidimetry d. Total cell count 33. Which of the following is used in synthesis of carbohydrates, lipids, and energy source? a. N b. C c. O d. S 34. Cells placed in a hypertonic solution will undergo a. Plasmoptysis b. Lysis c. No change d. None of the choices 35. The following are true of generation time EXCEPT a. Also known as doubling time b. Measure of increase in bacterial size c. Length of time needed for only 1 division d. None of the above is correct 36. Change in pH can result in a. Denaturation of enzymes b. Production of basic products c. Bacterial activities will be dormant d. All the choices are correct 37. What happens to a bacterium is it is places at its maximum temperature? a. Activities are inhibited b. Enzymes are denatured c. Both d. Neither 38. How many molecules of water is produced by peroxidase? a. 1 b. 2 c. 3 d. 4 39. Which of the following is a constituent of carbohydrates, lipids, nucleic acids, and proteins? a. C b. O c. N  d. S 40. Which of the following does not degrade peroxides? a. Catalase b. Peroxidase c. Superoxide dismutase d. All the choices are correct 41. ________ are organisms that grow best at high temperatures. a. Mesophiles b. Psychroduric c. Thermophiles d. Psychrophiles 42. ________ are microbes that grow best at moderate temperatures. a. Psychrotrophs b. Thermophiles c. Psychrophiles d. Mesophiles 43. ________ prefer cold temperatures (like deep ocean water). a. Psychrophiles b. Psychroduric c. Psychrotrophs d. Thermophiles 44. ________ , a particular group of psychrophiles, prefer refrigerator temperature. a. Thermophiles b. Psychrotrophs c. Psychroduric d. Mesophiles 45. ________ prefer warm temperatures but can endure very cold or even freezing temperatures. a. Psychrotrophs b. Mesophiles c. Psychrophiles d. Psychroduric 46. ________ use light as an energy source. a. Chemoautotrophs b. Chemoheterotrophs c. Phototrophs d. Heterotrophs 47. ________ use either inorganic or organic chemicals as an energy source. a. Chemotrophs b. Heterotrophs c. Photoautotrophs d. Chemoheterotrophs 48. ________ use inorganic chemicals as an energy source. a. Chemotrophs b. Chemolithotrophs c. Chemoorganotrophs d. Autotrophs 49. ________ use organic chemicals as an energy source a. Chemotrophs  b. Chemolithotrophs c. Autotrophs d. Chemoorganotrophs 50. ________ use carbon dioxide (CO2) as their sole source of carbon. a. Chemoautotrophs b. Chemoheterotrophs c. Autotrophs d. Heterotrophs 51. ________ use organic compounds other than CO2 as carbon sources. a. Chemotrophs b. Heterotrophs c. Photoautotrophs d. Chemoheterotrophs 52. ________ use light as an energy source and CO2 as a carbon source. a. Chemotrophs b. Photoautotrophs c. Chemoorganotrophs d. Autotrophs 53. ________ use light as an energy source and organic compounds other than CO2 as a carbon source. a. Photoheterotrophs b. Chemoheterotrophs c. Phototrophs d. Chemotrophs 54. ________ use chemicals as an energy source and CO2 as a carbon source. a. Chemoautotrophs b. Chemoheterotrophs c. Autotrophs d. Heterotrophs 55. ________ use chemicals as an energy source and organic compounds other than CO2 as a carbon source. a. Phototrophs b. Chemotrophs c. Chemolithotrophs d. Chemoheterotrophs 56. ________ refers to all of the chemical reactions that occur in a cell. The chemical reactions are referred to as metabolic reactions. a. Biological Catalysts b. Catabolic reactions c. Metabolism d. Anabolic reactions 57. ________ is any molecule that is a nutrient, an intermediary product, or an end product in a metabolic reaction. a. Anabolism b. Metabolites c. Inhibitor d. ATP molecules 58. ________ is the conversion of DNA to mRNA via RNA poymerase. a. Transcription b. Translation c. Replication  d. Termination 59. ________ is the conversion of RNA to proteins. a. Termination b. Transcription c. Replication d. Translation 60. ________ the process of copying the double stranded DNA. a. Translation b. Replication c. Transcription d. Termination