Biology Exam IB Blank

Biology Exam IB Blank -...

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Unformatted text preview: ********************************$********************************************* Refer to the diagram below to answer the next three questions 1.3,4,5 1. Which is a non—polar covalent bond? a. bond A b. bond B c. bond C d. both bonds B and C 2. Which represents a hydrophilic group? a. group 1 b. group 2 c. group 3 d. both groups 1 and 2 3. Which represents an amine group? a. group 1 b. group 2 c. group 3 d. none of these ****************************************************************************** 4. In the equation— glucose + fructose ---------- --> sucrose 1.10 a. the product is a storage form for energy in animals b: water is a product 0. water is a reactant (1. both aand b e. bothaand c 5. Cells in the thyroid gland contain a higher concentration of iodine than the blood. Which is true about the process whereby the iodine was accumulated in the cells? 122 a. It requires energy b. It requires no energy 0. It requires a carrier d.bothaandc e.bothbandc 6. Drugs like prevent in prokaryotes but not eukaryotes. 1.24 a. penicillin, DNA synthesis b. Cipro, DNA synthesis 0. penicillin, protein synthesis (1. Cipro, cell wall synthesis 7. Heterotrophs break down in order to produce 1.26 a. glucose, 02 b. autotrophs, CO2 c. glucose, C02 (1. glucose, energy ****************************#************************************************* The next Mo questions refer to the diagram below: ' 10. 1.lO,27 FaTl‘)’ Club 1. rah] carol E f‘Ci‘LCT‘Lci/i B rdchflfl -_a B Triglyeehde flT-P Reaction A a. is a dehydration synthesis b. is endergonic c. is exergonic (1. both a and b e. both a and c Which reaction (s) is (are) exergonic? a. reaction A b. reaction B c. reaction D d. both B and D Which reaction(s) occur(s) in theanaerobic breakdown of glucose? 1.32 a. reaction B b. reaction C 0. reaction D d. all of these ******************#*****************#**********#*******************#********** 11. 12. 13. 14. The enzyme pepsin acts in the stomach (pH=2.0). It has a pH optimum of 2.0 and a temperature optimum of 37°C. Which is true? 1.31 a. The activity of pepsin will increase in the alkaline environment of the intestine because H bonds will be broken b. The configuration of pepsin’s active site is changed at a pH above or below pH= 2.0 c. The configuration of pepsin’s active site is changed at a temperature above or below 37°C d. both b and 0 Which will bind to the active site of an enzyme? 1.30 a. substrate b. competitive inhibitor c. non-competitive inhibitor d. allosteric regulator e. both a and b Cyanide binds irreversibly to an enzyme that is essential for cell respiration. In the presence of cyanide, cells cannot reduce oxygen. Cyanide is a(a) 1.30 a. competitive inhibitor b. non—competitive inhibitor c. allosteric stimulator d. allosteric inhibitor Cells that produce large amounts of steroid hormones for export have large quantities of a. ribosomes b. smooth endoplasmic reticulum c. lysosomes (1. DNA 1.13,25 15. 16. 17. 18. 19. vDi A Rea comes in to your pharmacy complaining of diarrhea. She tells you that she has episodes three to four times a day, for the last six days. The length of time she’s been ill leads you to be concerned that she may have an infection. You suggest she see a doctor. Which is true? 1.2 a. Diarrhea 3 to 4 times a day is subjective data b. Sending Di to the doctor is an assessment. c. Sending Di to the doctor is the plan. d. Concern about infection is objective data A biologist grinds up some plant cells and obtains some organelles that take up CO2 and give off 02. The organelle is most likely 125,26 a. nuclei b. chloroplasts c. mitochondria d. ribosomes Consider the diagram to the right. Which is 1.31 true? a. Adding more substrate beyond 2M will increase the reaction rate. b. Adding more enzyme will increase rxn the reaction rate Rate c. Adding more substrate will decrease the reaction rate (1. both a and b Substrate conc—> Use the diagram below to answer the next question. 1.30 E1 E2 E3 A ------ -->B -------- -->C ------- -->X When X is present in high concentrations, less B is made. Which is true in that case? a. X feedback inhibits E1 b. X binds to the active site of E1 0. High amounts of A can reverse inhibition by X\ (1. The amount of C will increase Alcoholic fermentation differs fiom lactic acid fermentation in that in alcoholic fermentation 1.32 a. C02 is produced b. NADH is oxidized c. FAD is reduced d. glucose is required *******#************************§********************************************* Complete the paragraph below by choosing the correct answer for each space from the choices listed below. A letter may only be used once. 1.27 a. golgi complex b. ribosomes 0. nuclear pores d. mitochondria e. endoplasmic reticulum Information for the order of amino acids in growth hormone exits the nucleus through 28. and moves through the 29. to the 30. where protein synthesis occurs. Growth hormone is then packaged in the 31. 20. 2 1 . 22. 23. 24. Growth hormone leaves the cell by the process of 1.25 a. pinocytosis b. exocytosis c. endocytosis d. phagocytosis ****************************************************************************** 25. Which is true about glycolysis? 1.32 a. It occurs in the cytoplasm b. ATP is produced c. Glucose is broken down into 6 COTS (1. both a and b e. all of the above 26. Which is required for glycolysis? 1.32 a. oxygen b. ATP 0. ADP d. both a and b e. both b and c 27. In the reaction Pyruvate—-7-T> lactate NADH NAD+ a. pyruvate is oxidized b. 02 is required c. NADH is reduced (1. Pyruvate is reduced 28. Digestion of protein is completed in the intestine. The resulting monomers, will be transported out of the intestine (high concentration) to the blood (lower concentration) through a process called . 1.22 a. glucose, simple diffusion b. amino acids, simple diffusion c. glucose, facilitated diffusion d. amino acids , facilitated diffusion 29. When a high energy bond of ATP is broken, what happens to the released energy? 1.28 a. It is completely lost as heat energy b. It functions as a second messenger c. It converts inorganic phosphates into energy carrier molecules (1. It drives endergonic reactions in the cell 30. 31. 32. Which is part of the first law of thermodynamics? 1.26 , a. Energy cannot be created or destroyed b. Kinetic energy is stored energy c. Energy cannot be transferred or transformed d. Exergonic reactions are coupled with endergonic reactions Which is INCORRECTLY matched with its function? a. testosterone- maturation of sperm b. triglycerides- cell membrane structure c. myosin- muscle contraction d. hemoglobin- oxygen transport 1,13,16 Jane Pharmacist hypothesizes that black cohosh, an herbal, is effective in decreasing post menopausal hot flashes. Which step is necessary before she can conclude that the product is effective? 1.1 a. observation b. hypothesis c. synthesis (1. experimentation *******#********************************************************************** 33. 34. Dr. Denton Fender wants to test whether males are more likely to have car accidents than females. He plans to examine accident reports from the previous five years. 1.2 Which is the independent variable in this study? a. gender b. number of accidents 0. age (1. number of years of driving Which is the dependent variable? a. gender b. number of accidents c. age (1. number of years driving ****************************************************************************** 35. 36. 37. 38. Water is a good solvent because a. it causes covalently bonded molecules to dissociate - b. it acts as a buffer in living systems c. it causes ionically bonded molecules to dissolve. d. it causes ionically bonded molecules to dissociate 1.5,6, In sickle cell anemia there is a mutation in the DNA such that non functional hemoglobin molecules are produced. Which is true about this hemoglobin? 1.16 a. The order of amino acids is changed. b. The secondary, tertiary and quaternary structures are changed c. It will have a diminished capacity to carry oxygen d. all are true Calcium channel blockers 1.20 a. prevent calcium from entering a cell through transport channels b. block receptor proteins on the membrane c. recognize calcium in the extracellular fluid (I. prevent calcium from binding to carriers in the membrane Which functions in a structural capacity? a. collagen b. amylose c. cellulose 1,12,16 d.bothaandb e. bothaandc 39. 40. 41. Alcoholic fermentation differs frOm lactic acid fermentation in that in alcoholic v fermentation 1.32 a. C02 is produced b. NADH is oxidized c. FAD is reduced d. glucose is required Noah Hasgreens puts some live freshwater algae that used to live in a pond (0%) into his salt water fish tank. The plants died. What happened? 1.21 a. Osmosis did not occur b. Water diffused out of the plants’ vacuoles. c. Turgor pressure increased d. The cells shriveled Pharmacist May Demistake fills an order for an IV bag with hypertonic saline. What will happen to the patient’s red blood cells when the solution is administered?1.21 a. crenation b. plasmolysis c. lysis d. dehydration **************************************************************#*************** The next two questions refer to the diagram below 42. 43. 190,20 On the diagram the structure labeled A is a. phospholipid bilayer b. triglyceride bilayer d. a receptor protein c. the hydrophobic layer The function of structure B is to a. transport hydrophilic molecules across the membrane b. help the cell to distinguish self from non- self c. serve as a binding site for hormones and other chemical messengers that cause changes in the membrane d. prevent lipophilic substances from crossing the membrane ************#*********************************************************#****** 44. A protein measures nine nanometers. This is equal to 1.18 a. 9X10‘mm b.9XlO'12mm c.9X10'3mm d.9X10‘M 45. 46. 47. 48. 49. 50. Consider the diagram to the right. I H Which is true? 1' \ A: n :4 O a. Bonds of the type labeled A contribute to the x 0/ cohesive properties of water. H ' H '3‘ ‘ H b. Bonds of the type labeled B contribute to \ O / water’s high heat of vaporization 1.9 c. Water has a low specific heat, therefore it requires a lot of heat to raise the temperature of large bodies of water d. both a and b are true Which is true concerning fats? a. All hormones are fats b. Saturated fats have a lower melting point than unsaturated fats c. Triglycerides are more hydrophilic than phospholipids d. Triglycerides function in energy storage In DNA a. amino acid monomers are covalently bonded to one another b. nucleotides are covalently bonded to one another c. nitrogen bases are covalently bonded to their complements d. sugars are hydrogen bonded to phosphates 1.17 Hydrogen bonding is important in living systems because it a. binds amino acids to one another in the primary structure of proteins b. allows DNA strands to separate easily during DNA replication c. can be disrupted by changes in pH d. all of these 1.3,7 Which is INCORRECTLY matched to its definition? a. An acid is a proton acceptor b. A buffer always maintains a neutral pH. c. Ionically bonded molecules always change the pH when placed in water d. Buffers maintain pH by accepting or donating protons 1.6,8 Glycogen is a. an energy storage form in animals b. a structural carbohydrate c. created by hydrolysis of glucose (1. a polymer of ribose 1.12 1.14,15 ...
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Biology Exam IB Blank -...

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