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- 1. Multiple ChoiceWhich two functional groups are always found in amino acids?ketone and aldehydehydroxyl and aldehydecarboxyl and aminecarbonyl and carboxyl
- 2. Multiple ChoiceWhich of the following best summarizes the relationship between dehydration reactions and hydrolysis?Hydrolysis only occurs in the urinary system, and dehydration reactions only occur in the digestive tract.Hydrolysis creates monomers, and dehydration reactions break down polymers.Dehydration reactions can occur only after hydrolysis.Dehydration reactions assemble polymers, and hydrolysis breaks down polymers.
- 3. Multiple Choice
This is a picture of a?Amino AcidNucleic AcidLipidPolysaccharide - 4. Multiple ChoiceThis is a picture of a?PolypeptideNuceotideSteroidPolysaccharide
- 5. Multiple ChoiceWhat is this molecule? (hint: Count the C:H:O)disaccharidemonosaccharidepolysaccharidestarch
- 6. Multiple ChoiceWhat macromolecule makes up the cell membrane's lining?Saturated Fatty acid chainsPhospholipidsPolypeptide chainsCellulose polysaccharide Chains
- 7. Multiple ChoiceHow does your body use lipids?Primary source of energyenergy storage and insulationspeeds up chemical reactiondefense
- 8. Multiple ChoiceWhich of the 4 major macromolecules provides a quick burst of energy?CarbohydratesLipidsProteinsNucleic Acids
- 9. Multiple ChoiceEnzymes and hormones are both examples of:proteinslipidsnucleic acidscarbohydrates
- 10. Multiple ChoiceAlpha helix and beta pleated sheets are part of what level of protein structure?primarysecondarytertiaryquaternary
- 11. Multiple Choice
What are the elements of life?
CHNOPS
C, H, and O
C and H2O
Fire, magic, thunder, and Kanye
- 12. Multiple Choice
What is this functional group?
-OH
hydroxyl
amino
carbonly
carboxyl
- 13. Multiple Choice
What is this functional group?
-NH2
amino
phosphate
hydroxyl
carboxyl
- 14. Multiple Choice
What molecule is responsible for lowering activation energy for a reaction?
enzyme
starch
triglyceride
phospholipid
- 15. Multiple Choice
What is the difference between bonds responsible for primary structure and secondary structure in proteins?
primary is peptide bonds ; secondary is hydrogen bonds
primary is hydrogen bonds ; secondary is peptide bonds
no difference - they are both peptide bonds
no difference - they are both hydrogen bonds
- 16. Multiple Choice
Which of the following can cause a protein to denature?
pH
heat
radiation
all answers listed
- 17. Multiple ChoiceThe circled functional group is a(n):CarboxylCarbonylAmineHydroxyl
- 18. Multiple ChoiceThe characteristics of an organic molecule depend not only on its carbon skeleton, but also on groups of atoms with distinctive properties--called _____________attached to the skeletona. isomerb. keytonec. aldehydese. functional groups
- 19. Multiple ChoiceResearch indicates that Ibuprofen, a drug used to relieve inflammation and pain, is a mixture of two enantiomers; that is, molecules thathave identical three-dimensional shapesare mirror images of one anotherlack an asymmetric carbondiffer in the location of their double bonds
- 20. Multiple ChoiceLactose, a sugar in milk, is composed of one glucose molecule joined by a glycosidic linkage to one galactose molecule. How is lactose classified?as a pentoseas a hexoseas a monosaccharideas a disaccharide
- 21. Multiple ChoiceWhich of the following statements is false for the class of biological molecules known as lipids?They are soluble in water.They are an important constituent of cell membranesThey contain more energy than proteins and carbohydrates.They are not true polymers.
- 22. Multiple ChoiceThere are 20 different amino acids. What makes one amino acid different from another?different carboxyl groups attached to an alpha (α) carbondifferent amino groups attached to an alpha (α) carbondifferent side chains (R groups) attached to an alpha (α) carbondifferent alpha (α) carbons
- 23. Multiple ChoiceWhich of the following descriptions best fits the class of molecules known as nucleotides?a nitrogenous base and a phosphate groupa nitrogenous base and a pentose sugara nitrogenous base, a phosphate group, and a pentose sugara phosphate group and an adenine or uracil
- 24. Multiple ChoiceThalidomide and L-dopa, shown below, are examples of pharmaceutical drugs that occur as enantiomers, or molecules thatare cis-trans isomersare mirror images of one anotherare mirror images of one another and have the same biological activityhave identical three-dimensional shapes
- Answer choicesTagsAnswer choicesTags