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- 1. Multiple ChoiceWhat is the monomer of proteins?amino acidspolypeptidesnucleotidesmonosaccharides
- 2. Multiple Choice
Which macromolecule is this?carbohydratelipidproteinnucleic acid - 3. 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
- 4. Multiple ChoiceGiven the graph below, which statement best describes the role of enzymes?More energy is released without the presence of enzymesLess energy is needed to start a reaction when enzymes are present.A reaction is catalyzed by the lack of enzymesThe presence of enzymes causes reactions to occur at a slower rate.
- 5. Multiple Choice
Which colored box highlights the amino group?
Blue (left)
Turquoise (top)
Orange
Red
Purple
- 6. Multiple Choice
Which colored box is the reason this is an organic molecule?
Blue (left)
Turquoise (top)
Orange
Red
Violet
- 7. Multiple Choice
Which colored box is different for every amino acid?
Blue (left)
Turquoise (top)
Orange
Red
Purple
- 8. Multiple Choice
Which colored box highlights the carboxyl?
Blue (left)
Turquoise (top)
Orange
Red
Purple
- 9. Multiple Choice
What is a long chain of amino acids called?
Polysaccharide
Lipid
Carbohydrate
Polypeptide
Nucleic acid
- 10. Multiple Choice
Enzymes belong to which category of organic molecule?
Proteins
Lipids
Carbohydrates
Nucleic acids
- 11. Multiple Choice
Which statement about enzymes is FALSE?
They are made from amino acids
They can be used multiple times
They lower the energy needed for reactions
A single enzyme has many different functions
- 12. Multiple Choice
What happens when an enzyme is placed outside it's normal environment?
It functions normally
It functions better
It's function ceases
- 13. Multiple ChoiceThe bond that joins amino acids are called:Peptide BondsEster BondsGlycosidic LinkagesPhosphodiester Bonds
- 14. Multiple Choice
If a methyl group (-CH3), which does not like water, were at the 'R', the amino acid would likely be:
Hydrophobic
Hydrophilic
Ionic
Acidic
- 15. Multiple ChoiceThe reaction used to digest and break the bond in red is:HydrolysisDehydration SynthesisOxidationSingle Displacement
- 16. Multiple ChoiceThe primary sequence of a protein refers to the:Order of amino acidsα-Helix or β-Pleated SheetInteraction of subunitsHydrogen Bonding
- 17. Multiple ChoiceStructures like an α-Helix are formed because of:Hydrophobic InteractionsDiSulphide BridgesSalt BridgesHydrogen Bonding
- 18. Multiple ChoiceThe amino acid that results in disulphide bridges is:CysteineAlanineGlutamic AcidValine
- 19. Multiple ChoiceThe structure of proteins can be changed by environmental factors such as temperature or pH.TrueFalse
- 20. Multiple ChoiceRefers to the three-dimensional structure of an entire amino acid chain in a protein moleculetertiary structureprimary structuresecondary structurefibrous proteins
- 21. 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 .
- 22. Multiple ChoiceBased on the graph, what temperature does this enzyme work best?15 C40 C30 C
- 23. 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
- 24. Multiple ChoiceLetter D...active siteenzymesubstrateproducts
- 25. Multiple ChoiceLetter C...active siteenzymessubstrateproducts
- Answer choicesTagsAnswer choicesTags