Biological Molecules Quiz - Peptide Bonds, Chaperonin Proteins, and More

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

Question 2 What is the function of chaperonin proteins? Denaturation of polypeptides Assembling amino acids Regulation of gene expression Folding proteins None of the above

Question 3 Which amino acid is responsible for the formation of disulfide bonds? Alanine Proline Tyrosine Cysteine Guanine

Question 4 The addition of water to break a chemical bond is termed – Dehydration synthesis Hydrolysis Condensation Catabolism Disassociation

Question 5 Which lipid forms membranes? Triglycerides Steroids Phospholipids Terpenes Saturated fates

Question 6 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

Question 7 The 2 strands of DNA are covalently bonded together. These bonds are called phosphodiester bonds. This is true This is false

Question 8 Which of the following is not part of a nucleotide? 5 carbon sugar Phosphate group Fatty acid chain Nitrogenous base

Question 9 The energy in lipids is stored in the C-H bonds. This is true This is false

Question 10 Which of the following is an amino group? -OH -C=O -COOH -SH -NH2

Question 11 Dehydration synthesis – Is used to link monomers Removes water to form bonds Is involved in protein synthesis Can form disaccharides All of the above

Question 12 Lincosamides are a class of antibiotics that inhibit peptide bond formation. What type of biological molecule would be affected? Lipids Proteins Nucleic Acids Carbohydrates

Question 13 If a chromosome contains 20% thymine, how much guanine should it have? 10% 20% 30% 40%

Question 16 What happens when a lipid is hydrogenated? Hydrogen is added to the fatty acid chains The melting point is raised The lipid is converted into a saturated fat The fatty acid chain is straightened All of the above

Question 17 You worked at a fish hatchery and wanted to set up an experiment to deliver the female sex hormone, estrogen, to some fish. What type of molecule is estrogen? Triglyceride Polypeptide Steroid Terpene Disaccharide

Question 18 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’

Question 19 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

Answer Key to mc questions A D D B C A B (False) C A (True) E • E • B • C • Bignore –14 deleted • Cignore –15 deleted • E • C • C • D

Biological Molecules Quiz - Peptide Bonds, Chaperonin Proteins, and More