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- 1. Multiple ChoiceMonosaccharides are monomers ofCarbohydratesLipidsProteinsNucleic Acids
- 2. Multiple Choice
Which of the following organic compounds is the main source of quick energy for living things?
carbohydrates
lipids
nucleic acids
proteins
- 3. Multiple Choice
Consider the chemical equation C6H12O6 + O2 → CO2 + H2O. In this equation, C6H12O6 is a:
product
reactant
reaction
- 4. Multiple Choice
If there are 12 H atoms on the reactant side, how many H atoms will be on the product side?
12
4
6
You need more information to answer this question
- 5. Multiple Choice
Which macromolecules are made primarily of CHO
Carbohydrates
Lipids
Proteins
Nucleic acids
- 6. Multiple Choice
If molecule A is starch, then molecule B must be a:
nucleic acid
amino acid
fatty acid
monosaccharide
- 7. Multiple ChoiceWhich major macromolecule is being represented in this image?carbohydratelipidproteinnucleic acid
- 8. Multiple ChoiceWhich of the following contains the genetic code for protein synthesis?carbohydratelipidproteinnucleic acid
- 9. Multiple ChoiceWhat are the building blocks of proteins?amino acidfatty acidnucleotidelipid
- 10. Multiple ChoiceWhat are the single sugars that are the building blocks of carbohydrates?monosaccharidesdisaccharidespolysaccharidesamino acid
- 11. Multiple ChoiceThe element _______is found in all of the organic compounds.IronNitrogenCarbonOxygen
- 12. Multiple ChoiceDNA and RNA are examples ofCarbohydratesLipidsProteinsNucleic Acids
- 13. Multiple ChoiceNucleotides are monomers ofCarbohydratesLipidsProteinsNucleic Acids
- 14. Multiple ChoiceWaxes, oils and fats are examples ofCarbohydratesLipidsProteinsNucleic Acids
- 15. Multiple ChoiceThe organic compounds that have many structural purposes and are used in many processes within the
cell are called ____________________.CarbohydratesLipidsProteinsNucleic Acids - 16. Multiple Choice
Which macromolecule is shown?
lipid
protein
nucleic acid
carbohydrate
- 17. Multiple ChoiceWhat type of macromolecule are enzymes?ProteinCarbohydrateLipidNucleic Acid
- 18. Multiple ChoiceLipids are made of...C H OC H O NC H O N PC H O N S
- 19. Multiple ChoiceProteins are made of...C H OC H O NC H O N PC H O N S
- 20. Multiple ChoiceWhich macromolecule stores energy, insulates us, and makes up the cell membrane?lipidsproteinscarbohydratesnucleic acids
- 21. Multiple ChoiceChemical reactions always involvethe breaking of bonds in reactants.the formation of new bonds in products.the breaking of bonds in reactants and the formation of new bonds in products.enzymes.
- 22. Multiple ChoiceAn enzyme is a catalyst.TrueFalse
- 23. Multiple Choice
How how carbohydrates and lipids similar?
both contain C, H, O, N, P and store energy
both contain C, H, O, N and give energy
both contain C, H, O, N, S and store energy
both contain C, H, O and give energy
- 24. Multiple ChoiceYou can use catalysts to speed up chemical reactions.TrueFalse
- 25. Multiple ChoiceReactants will be found on which side of the chemical equation?LeftRight
- 26. Multiple ChoiceProducts will be found on which side of the chemical equation?LeftRight
- 27. Multiple ChoiceWhich of the following is an indicator of a chemical reaction?Production of HeatProduction of LightProduction of GasAll of them
- 28. Multiple ChoiceWhat type of reaction is represented by the graph?Exothermic ReactionPhilothermic ReactionHeat giving ReactionEndothermic Reaction
- 29. Multiple ChoiceWhat type of reaction is represented by the graph?Exothermic ReactionPhilothermic ReactionHeat giving ReactionEndothermic Reaction
- 30. Multiple Choice
A single unit that can bond to other single units to form a polymer is a:
Lego
Monounits
Monopoly
Monomer
- 31. Multiple Choice
Many monomers bonded together form a:
Multimer
Polygon
Polymer
Manymer
- 32. Multiple Choice
Monomers bond to other monomers through this process:
Hydrolysis reaction
Condensation reaction
Gluation reaction
Freezing reaction
- 33. Multiple Choice
A polymer is broken down into its monomer through:
condensation
dehydraton synthesis
hydrolysis
nonreaction
- 34. Multiple ChoiceIn a ___________change, a substance changes into a different substance.PhysicalChemical
- 35. Multiple Choice
In a chemical reaction, bonds are broken and new bonds are formed that create new substances. The bonds that are broken are present in which of the following?
Reactants
Products
Atoms
Catalysts
- 36. Multiple Choice___________________ are the elements are compounds that leave (are formed in) a chemical
reaction.PolymersBondsReactantsProducts - 37. Multiple ChoiceThe area that the substrate fits into on the enzyme is called the:Active SiteAllosteric SiteDiSulphide Bridgeβ-Pleated Sheet
- 38. Multiple ChoiceEnzymes catalyze reactions by ___________ Activation Energy.IncreasingDecreasing
- 39. Multiple ChoiceAt high temperatures enzyme activity declines because of:DenaturationDecreased Kinetic MotionIncreased H-BondingDissociation of Ionic Compounds
- 40. Multiple ChoiceMost enzymes have the ending:-ase-ose-ic acid-ate
- 41. Multiple ChoiceThe molecule an enzyme is working on is called the:SubstrateSolventAllosteric InhibitorCoEnzyme
- 42. Multiple ChoiceAfter the enzyme and substrate bind together and perform the reaction, what does the substrate become?a substratean enzymea productan active site
- 43. Multiple ChoiceLetter D...active siteenzymesubstrateproducts
- 44. Multiple ChoiceBased on the graph, what is the optimal temperature for this enzyme?15oC40oC30oC35oC
- 45. Multiple ChoiceAn enzyme speeds up a chemical reaction in the cell but can only be used once. True or False?truefalse
- 46. Multiple ChoiceWhat is the purpose of an enzyme?give permission for the reactionraise activation energyspeed up reactionscontrol how many reactions occur
- 47. Multiple ChoiceWhere do substrates bind on an enzyme?voltage-gated channelssurface receptorcalcium channelsactive site
- 48. Multiple ChoiceWhat happens when enzymes are heated to a high temperature?The enzymes die.The shapes of the enzyme are altered or denaturedThe enzymes' amino acid sequence changes.The enzymes remain the same
- 49. Multiple Choice
What are the enzymes called when they are at high temperature or extreme pH?
denatured
Killed
inactive
normal
- 50. Multiple ChoiceWhat happens to an enzyme when it is denatured?Activation energy is lowered.It becomes stronger.It loses its shape.Activation energy is raised.
- 51. Multiple ChoiceWhich factors can change the shape of an enzyme and thus denatures a enzyme?Excessive heat and changes in pHNothing canExposure to light and soundExposure to bacteria and Amoebas
- 52. Multiple Choice
Cells can only work if their enzymes are functioning. What can you infer from the graph?
Cells function best at low pH values
Cells function fine at all pH values
Cells function best at high pH values
Cells do not function well if the pH is too high or too low
- 53. Multiple Choice
One function of lipids is to store energy. What is another function of lipids in the human body?
To form cell membranes
To make energy from the sun.
To control chemical reactions.
To provide energy for the cell.
- 54. Multiple ChoiceWhich of these is most likely an enzyme?SucroseGalactoseFructoseAmylase
- 55. Multiple ChoiceWhat is another name for enzymes?chemical catalystsmicroorganismsbiological catalystsinorganic catalysts
- 56. Multiple ChoiceWhen a piece of liver is dropped into hydrogen peroxide, the peroxide bubbles vigorously as the hydrogen peroxide (H2O2) decomposes into water (H2O) and oxygen (O2). This rapid change in reaction rate suggeststhat liver contains lots of germsthe liver contains an enzyme that breaks down hydrogen peroxidethat liver is a substrate for hydrogen peroxidethat hydrogen peroxide is a powerful enzyme
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