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- 1. Multiple ChoiceMr. McNeice wanted to know if different types of music affected people's heart rates, so he played different music and checked their pulses. What is the dependent variable?type of musicheart ratehow long they listend to musicMr. McNeice
- 2. Multiple ChoiceIn an experiment to find out how the temperature affects the bounce height of a ball, the independent variable is ...temperaturebounce heightthe thermometerthe ruler
- 3. Multiple ChoiceIn an experiment to find out how the temperature affects the bounce height of a ball, a control variable is ...temperaturethe type of ballthe thermometerthe ruler
- 4. Multiple ChoiceResearch Question: Does the type of gasoline put in a car effect how fast the car can drive. What is the independent variable?Type of gasolinewhich car the gas is put intohow fast the car can drivehow much gas is put into the car
- 5. Multiple ChoiceWhen a another scientist does someone's experiment to see if the results are valid?repetitionreplicationexperimental methodcontrolled variable
- 6. Multiple ChoiceScientists frequently repeat the experiments of others scientists. Why is this important in science?Scientists often ask each other for help in performing experiments.Replication of experiments helps to confirm and verify results.Scientists frequently perform other scientists’ experiments in order to practice their technique.Repeating experiments is an effective way to make sure a laboratory is in optimal condition.
- 7. Multiple ChoiceCaira reads in a science journal that replication and repetiton are so important, but she did not understand the difference between them. Which of the following best explains the two terms?Repetition is when a scientist repeats an experiment; replication is when a scientist conducts an experiment on genetic material.Repetition is when a scientist does the same experiment a number of times; replication is when other scientists reproduce a scientist’s experiment.Repetition is when a scientist publishes in more than one scientific periodical; replication is when another scientist reproduces another scientist’s results.Repetition is when a scientist commits an error in an experiment the first time and must repeat it; replication is when a scientist repeats an experiment to make sure it is valid.
- 8. Multiple ChoiceIn 1897, Joseph Thomson discovered that atoms contained electrons. He proposed a change in the atomic theory of that time, and the theory was modified because of his discovery. Since Thomson’s discovery, atomic theory has been further modified. What is the best explanation for why scientific theories are modified?Theories more than ten years old are usually out of date.Scientists want to prove that the work of other scientists is wrong.New evidence that supports a revision prompts scientists to modify earlier theories.So much information is available today that it is harder to focus research and disprove theories.
- 9. Multiple ChoiceProteins are made of monomers called ___________NucleotidesMonosaccharidesAmino AcidsGlycerol and fatty acids
- 10. Multiple Choice_________ are composed out of carbon (C), hydrogen (H), oxygen (O), nitrogen (N), and phosphorus (P)CarbohydratesLipidsProteinsNucleic Acids
- 11. Multiple ChoiceDNA and RNA are examples ofCarbohydratesLipidsProteinsNucleic Acids
- 12. Multiple ChoiceWaxes, oils and fats are examples ofCarbohydratesLipidsProteinsNucleic Acids
- 13. Multiple Choice
Which macromolecule is shown?
View Figure 1 (if not visible)lipidproteinnucleic acidcarbohydrate - 14. Multiple ChoiceWhich macromolecule is shown?
View Figure 2 (if not visible)lipidproteinnucleic acidcarbohydrate - 15. Multiple ChoiceWhich macromolecule is shown?
View Figure 3 (if not visible)lipidproteinnucleic acidcarbohydrate - 16. Multiple ChoiceWhich macromolecule is shown?
View Figure 4 (if not visible)lipidproteinnucleic acidcarbohydrate - 17. Multiple ChoiceWhich macromolecule stores energy, insulates us, and makes up the cell membrane?lipidsproteinscarbohydratesnucleic acids
- 18. Multiple ChoiceWhat are the four macromolecules?proteins, nucleic acids, carbohydrates, and lipidsmonosaccharides, lipids, polysaccaharides, and proteinsRNA, DNA, proteins, and carbohydratesproteins, DNA, RNA, and steroids
- 19. Multiple ChoiceWhich of the following properties of water enables it to move from the roots to the leaves of plants?Water expands as it freezes.Water is an excellent solvent.Water exhibits cohesive behavior.Water moderates temperature.
- 20. Multiple ChoiceWhat property of water allows it to be such a versatile solvent that it is often called the "universal solvent?"PurityPolarity and cohesionHigh heat capacityExpansion upon freezing
- 21. Multiple ChoiceLarge bodies of water do not quickly fluctuate in temperature. Why?Water is a solvent.Water has a high heat capacity.Water acts as a buffer.Water is non-polar.
- 22. Multiple ChoiceWater striders can walk across the surface of calm water. Their feet push the surface of the water down slightly, but they do not break the surface. Why?The insects are light enough so they do not break the hydrogen bonds holding the water molecules togetherThe insects actually use their wings to hover slightly above the water’s surface and they only skim it with their feet.The insect’s feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water’s surface.The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
- 23. Multiple ChoiceWhat word describes when water is attracted to other substances?cohesionadhesioncapillary actionsurface tension
- 24. Multiple ChoiceWhy does water move from the roots to the leaves of plants?Water is pushed by solutesCapillary action pulls the water molecules like a chainWater is pulled by gravityWater’s cohesion causes it to “pull” towards the leaves
- 25. Multiple ChoiceWhich is NOT a unique property of water?Frozen water floats on liquid water.Water covers most of the Earth’s surface and retains a large amount of heat.Water molecules stick to each other through hydrogen bonds.Water cools very rapidly.
- 26. Multiple ChoiceEnzymes are considered to beLipidsCarbohydrateProteinNucleic Acid
- 27. Multiple ChoiceEnzymes are capable of increasing the rate of a chemical reaction within a living cell. Enzymes accomplish this through which of the following means?reducing the number of productsreducing the activation energyincreasing the temperature of the cellincreasing the concentration of reactants
- 28. Multiple ChoiceWhat is a substance called if it speeds up a chemical reaction?reusablecatalystspecificfragile
- 29. Multiple ChoiceWhat 3 letters do enzymes typically end in?-ose-ase-ese-tic
- 30. Multiple ChoiceThe graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?Enzymes increase the energy of the reactants.Enzymes decrease the energy level of the products.Enzyme decrease the activation energy of the reaction.Enzymes reverse the direction of the reaction.
- 31. Multiple ChoiceWhich of the following conclusions can be drawn from this graph?The optimum pH of the enzyme is 6.6.The optimum pH of the enzyme is 5.8The enzyme’s activity increases as pH increases 5.0 to 9.0The enzyme’s activity is greater around pH of 8.0 .
- 32. Multiple ChoiceWhat happens when enzymes are heated to a high temperature?The enzymes die.The shapes of the enzyme are altered denatureThe enzymes' amino acid sequence changes.The enzymes remain the same
- 33. Multiple ChoiceWhich of these is most likely an enzyme?SucroseGalactoseFructoseAmylase
- 34. Multiple ChoiceBased on the graph, what is the optimal temperature for this enzyme?15oC40oC30oC35oC
- 35. Multiple ChoiceThe graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?Enzymes increase the energy of the reactants.Enzymes decrease the energy level of the products.Enzyme decrease the activation energy of the reaction.Enzymes reverse the direction of the reaction.
- 36. Multiple ChoiceWhich of the following statements is not part of the cell theory?Cells are the basic unit of structure and function in all living things.All cells are produced from other cells.Only animal cells are composed of cells.All living things are composed of cells.
- 37. Multiple ChoiceWhich statement reflects one of the major components of the cell theory?All living things are multi-cellular.Organs are the basic unit of structure and function for all living things.All cells come from previously existing cells.Every organism has a reproductive system to ensure survival of the species.
- 38. Multiple ChoiceWhen cells are damaged, new cells are created by cell division. How does the cell theory support this fact?It states that all cells have a nucleus which divides.It states that all living things are made up of one or more cells.It states that cells come from previously existing cells.It states that the basic units of structure and function are cells.
- 39. Multiple ChoiceThis image shows the detailed structure of the tiny mitochondria organelle. Which microscope most likely took this image?Compound LightScanning ElectronDissectingTransmission Electron
- 40. Multiple ChoiceWhich electron microscope provides details of a cell's internal structures?Scanning Electron Microscope (SEM)Transmission Electron Microscope (TEM)Light MicroscopeDissecting Microscope
- 41. Multiple ChoiceWhich microscope would you use to see the outside of a bee with a magnification under 100X.Compound LightScanning ElectronDissectingTransmission Electron
- 42. Multiple ChoiceWhich microscope took a 3D image of this fly's head?Compound LightTransmission ElectronDissectingScanning Electron
- 43. Multiple Choicea microscope with two lenses or sets of lensesOptical MicroscopeElectron MicroscopeCompound MicroscopeSimple Microscope
- 44. Multiple Choicebreaks down glucose to release energy for the cellnucleuslysosomesmitochondriavacuole
- 45. Multiple ChoiceWhat is the cell organelle that stores water, food and waste called?The cytoplasmThe lysosomesThe vacuoleThe mitochondria
- 46. Multiple ChoiceWhat is the main difference between prokaryotic and eukaryotic cells?Prokaryotic cells have a nucleus and Eukaryotic cells do notProkaryotic cells are unicellular and Eukaryotic cells are multicellular.Prokaryotic cells do not have a nucleus, Eukaryotic cells do have a nucleus.Prokaryotic cells are plant cells and Eukaryotic cells are animal cells.
- 47. Multiple ChoiceThe main function of chloroplasts is:To control what enters and leaves the cell.To break down food to release energy for the cell.To control all activities of the cell.To produce food for the cell using the sun's energy.
- 48. Multiple ChoiceRibosomes are the cell organelle thatBreak down food to produce energy for the cell.Produce proteins for the cell.Break down broken cell parts.Make food for the cell using the sun's energy.
- 49. Multiple ChoiceWhich types of organisms are Prokaryotes?AnimalsPlantsFungiBacteria
- 50. Multiple ChoiceThis organelle helps plants keep their rigid structure.Cell wallCell membraneChloroplastNucleus
- 51. Multiple ChoiceUsing this image, what organelle is N?CentriolesCell MembraneGolgi ApparatusRibosome
- 52. Multiple ChoiceUsing this image, what organelle is C?Cell WallMitochondriaLarge Cell VacuoleChloroplast
- 53. Multiple ChoiceTo convert the energy of glucose into the usable form of ATP is a function of _________.Cell WallCytoplasmNucleusMitochondria
- 54. Multiple ChoiceWhat is this image?cell membraneproteinscarbohydrateslipids
- 55. Multiple ChoiceThe function of the plasma membrane is....to regulate what enters and leaves the cell.fight bacteria and viruses that enter the cell.provide rigid support and protection to the cell.make sure each cell can move
- 56. Multiple ChoiceWhat is NOT TRUE about the cell membraneIt controls what enters and leaves the cellSemipermeablePhospholipid bilayerContains digestive enzymes
- 57. Multiple ChoiceWhat do the brown structures represent?PhospholipidsGlycoproteinsChannel ProteinsCyctoskeleton Filaments
- 58. Multiple ChoiceOsmosis is the movement of _____ across a membrane.foodenergyoxygenwater
- 59. Multiple ChoiceWhich is true about active transport?It requires energyit does not require energyIt moves substances down the concentration gradientit moves material from high to low concentration
- 60. Multiple ChoiceThe cell below is in a _________ solution.HypotonicHypertonicIsotonic
- 61. Multiple ChoiceThe cell below is in a _____________ solution.HypertonicHypotonicIsotonic
- 62. Multiple ChoiceA cell in a hypotonic solution willswellshrinkstay the same sizeimpossible to tell
- 63. Multiple ChoiceA cell in an isotonic solution willswellshrinkstay the same sizeimpossible to tell
- 64. Multiple ChoiceWhat type of transport is this?facilitated diffusionactive transportdiffusionosmosis
- 65. Multiple ChoiceIn what direction do particles naturally diffuse?Up the concentration gradientDown the concentration gradientAcross the concentration gradientOver the river and through the woods
- 66. Multiple ChoiceThe picture is an example of...active transportpassive transportdiffusionosmosis
- 67. Multiple ChoiceA slug passes away when salt is put on it from their cellsexpandingshrinking
- 68. Multiple ChoiceThis type of transport requires NO ENERGY and goes from HIGH to LOW concentration?ActiveCellularPassive
- 69. Multiple ChoiceIn a solution, salt is considered the _______.solventsolutesolution
- 70. Multiple ChoiceWhich cell is placed into a hypotonic environment?ABCD
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