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Which of the following biological molecules contain peptide bonds? Proteins Carbohydrates Lipids

Which of the following biological molecules contain peptide bonds? Proteins Carbohydrates Lipids Nucleic Acids. A. C. Which one is… a lipid a nucleotide an amino acid a carbohydrate. B. D. What is the function of chaperonin proteins? Denaturation of polypeptides

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Which of the following biological molecules contain peptide bonds? Proteins Carbohydrates Lipids

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  1. Which of the following biological molecules contain peptide bonds? Proteins Carbohydrates Lipids Nucleic Acids

  2. A C Which one is… • a lipid • a nucleotide • an amino acid • a carbohydrate B D

  3. What is the function of chaperonin proteins? Denaturation of polypeptides Assembling amino acids Regulation of gene expression Folding proteins None of the above

  4. Which amino acid is responsible for the formation of disulfide bonds? Alanine Proline Tyrosine Cysteine Isoleucine

  5. Which amino acid would be considered basic? • Alanine • Lysine • Tyrosine • Cysteine • Isoleucine

  6. Which amino acid would be considered acidic? • Alanine • Lysine • Tyrosine • Glutamate • Isoleucine

  7. The addition of water to break a chemical bond is termed – Dehydration synthesis Hydrolysis Condensation Catabolism Disassociation H2O H2O H2O

  8. Which of the following is not a function of proteins? Coding for polypeptides Catalyzes chemical reactions Transport of material Structural components of tissues All of the above are protein functions

  9. The 2 strands of a DNA double helix are covalently bonded together with phosphodiester bonds. This is true This is false

  10. The energy in carbohydrates is stored in the C-H bonds. This is true This is false

  11. If a chromosome contains 20% thymine, how much guanine should it have? 10% 20% 30% 40%

  12. Which of the following is an amino group? -OH -C=O -COOH -SH -NH2

  13. Dehydration synthesis – Is used to link monomers Removes water to form bonds Is involved in protein synthesis Can form disaccharides All of the above

  14. Lincosamides are a class of antibiotics that inhibit peptide bond formation. What type of biological molecule would be affected? Lipids Proteins Nucleic Acids Carbohydrates

  15. A person is lactose intolerant. What type of molecule is lactose? Monosaccharide Disaccharide Oligosaccharide Polysaccharide

  16. If a strand of DNA has a sequence 5’-ATCCTAG-3’, what would be the complementary sequence? 5’-CGAAGAT-3’ 5’-TAGGATC-3’ 3’-TAGGATC-5’ 3’-CGAAGTC-5’

  17. If a cell was grown in a growth medium that has a radioactive sulfur isotope which class of biomolecules will show the presence of the isotope? Nucleic acids Carbohydrates Lipids Proteins

  18. How can changes in pH affect protein structure? • By causing hydrolysis of the peptide bond • By changing the charges on certain amino acid sidechains • By breaking the sidechains off of the alpha carbons • By joining proteins together in long chains

  19. This would be : A. beta sheet; B. alpha helix; C. nucleic acid; D. lipid

  20. This would be : A. beta sheet; B. alpha helix; C. nucleic acid; D. lipid

  21. Most biological buffers consist of a pair of molecules, one an acid and one a base

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