Chapter 3 Biology

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Across
  1. 4. monomer for nucleic acid
  2. 5. always hydrophobic
  3. 7. made of a nitrogenous base, a pentose sugar, and a phosphate group
  4. 10. sugar in DNA
  5. 11. most diverse molecule
  6. 14. elements with the same chemical formula that have different structures.
  7. 15. polymer for starch, cellulose, and glycogen
  8. 16. structure is branched
  9. 19. Functional group found in alcohols
  10. 20. Amine group at the end of a peptide bond
Down
  1. 1. indigestible by humans
  2. 2. cytosine, uracil, and thymine
  3. 3. guanine and adenine
  4. 6. Sugar in RNA
  5. 8. in spiders' exoskeleton
  6. 9. Carboxyl group at other of a peptide bond
  7. 12. monomer is a monosaccharide
  8. 13. groups hydroxyl, carboxyl, phosphate, menthyl, and amine
  9. 17. can make 4 bonds
  10. 18. there are twenty of them