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- 1. Multiple ChoiceWhat is a peptide bond?Bond that holds two amino acids together.A bond that holds hydrogen and oxygen molecules together.A bond that holds the phosphate group of one nucleotide and a sugar of a neighboring nucleotide.A bond that is formed by the sharing of electrons.
- 2. Multiple ChoiceHow many different amino acids are there?15202530
- 3. Multiple ChoiceEnyzmes are a very important type of protein used toBuild bones in skeletonSend hormonal signals throughout bodySpeed up chemical reactionsPhotosynthesize glucose in plants
- 4. Multiple ChoiceWhat is a protein:A polymer composed of many sugars.A polymer composed of many amino acids.A polymer composed of fatty acids.A polymer composed of nucleotides.
- 5. Multiple Choice
The diagram shows the structure of an amino acid. Which type of molecule is formed from amino acids?lipidsproteinscarbohydratesnucleic acids - 6. Multiple ChoiceThe structure of proteins can be changed by environmental factors such as temperature or pH.TrueFalse
- 7. Multiple ChoiceThe diagram shows a bond forming between two amino acids. What is the name of this reaction?Dehydration SynthesisHydrolysisPepysisOxidation
- 8. Multiple ChoiceWhen a protein unfolds, it isDenaturedBuildingAdding amino acidsMaking food
- 9. Multiple ChoiceEach amino acid is different from the other due to....The R groupThe amino groupThe carboxyl groupThe central carbon
- 10. Multiple ChoiceCells must produce many different enzymes becauseenzymes are quickly used upmost cellular reactions require a specific, unique enzymeThey have to have some way to use up the protein that they consumeenzymes are not very effective at speeding up reactions
- 11. Multiple ChoiceEnzymes are...ProteinsNucleic AcidsSugarsLipids
- 12. Multiple ChoiceThe polymer which folds into proteinsPolypeptideAmino AcidsNucleic AcidsPolynucleotides
- 13. Multiple ChoiceWhat elements make up amino acids?Carbon, hydrogen and oxygen onlyCarbon, hydrogen, oxygen and nitrogen onlyCarbon, hydrogen and phosphorus onlyCarbon, hydrogen, nitrogen and oxygen; and sometimes also sulfur
- 14. Multiple ChoiceThe reaction used to digest and break the bond in red is:HydrolysisDehydration SynthesisOxidationSingle Displacement
- 15. Multiple ChoiceThe primary sequence of a protein refers to the:Order of amino acidsα-Helix or β-Pleated SheetInteraction of subunitsHydrogen Bonding
- 16. Multiple ChoiceWhat is the monomer of a protein?amino acidmonosaccharidefatty acidnucleic acid
- 17. Multiple ChoiceHow many structures or stages are there in proteins?1234
- 18. Multiple ChoiceThe two types of folding in the secondary structure are.....alpha-helix & beta-pleated sheetspolypeptide & nucleotideglobular & fibrous
- 19. Multiple ChoiceOur bodies can synthesize some of the essential amino acids we need, but where do we get the ones we cannot synthesize?eating animal proteintaking a supplementeating plant proteindrinking plenty of water
- 20. Multiple ChoiceWhat gives a protein its unique shape?the unique sequence of amino acids in its polypeptide chainthe unique folding due to the sequence of amnio acids in the polypeptide chainhydrogen bonding & unique interactions between the 'R' groupsall of these
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