Biology Chapter 3

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Across
  1. 3. class of molecules whose defining characteristic is that they do not readily dissolve in water; made of same elements as carbs, but contain much more hydrogen relative to oxygen
  2. 5. fats in their liquid forms
  3. 8. larger-scale 3D shape that a protein takes
  4. 11. fatty acid with two or more double bonds between carbon atoms
  5. 13. way in which two or more polypeptide chains come together to form a protein
  6. 15. organic molecules that always contain carbon, oxygen, and hydrogen, and may contain nothing but these; usually contain twice as many hydrogen atoms as oxygen atoms
  7. 18. branch of chemistry devoted to the study of molecules that have carbon as their central element
  8. 20. fatty acid with no double bonds between the carbon atoms of its hydrocarbon chain
  9. 25. molecules that are a combination of lipids and proteins; active in transporting fats throughout the body
  10. 26. group of atoms that confers a special property on a carbon based molecule
  11. 27. molecule found in many lipids that is composed of a hydrocarbon chain bonded to a carboxyl group
  12. 28. complex carbohydrate found in plants; serve as the main form of carbohydrate storage in plants
  13. 29. charged lipid molecule composed of two fatty acids, glycerol, and a phosphate group
  14. 30. forms the external skeleton of the arthropods
  15. 31. complex carbohydrate and primary form of storage in animals
  16. 33. building block of nucleic acids, consisting of a phosphate group, a sugar, and a nitrogen-containing base
  17. 34. large, folded chain of amino acids
Down
  1. 1. structure that proteins assume after folding up
  2. 2. primary information bearing molecule of life, composed of two linked chains of nucleotides
  3. 4. polymer of carbohydrates, composed of many monosaccharides
  4. 6. structural, complex carbohydrate produced by plants and animals; makes up so much of the natural world
  5. 7. small molecule that can be combined with other similar or identical molecules to make a polymer
  6. 9. fatty acid with one double bond between carbon atoms
  7. 10. lipid composed of a single fatty acid linked to a long-chain alcohol
  8. 12. combination of proteins and carbohydrates; play important roles as cell receptors and some types of hormones
  9. 14. molecule composed of nucleotides that is active in the synthesis of proteins
  10. 16. large molecule made up of many similar or identical subunits
  11. 17. series of amino acids linked in linear fashion
  12. 19. level of a protein; the sequence of amino acids
  13. 21. lipid molecule formed from three fatty acids bonded to glycerol
  14. 22. steroid molecule that forms part of the outer membrane of all animal cells and acts as a precursor for many other steroids
  15. 23. phosphorus atom surrounded by four oxygen atoms
  16. 24. building block, or monomer, of carbohydrates, also called simple sugars
  17. 32. variety of lipid molecules that have four carbon rings as a central element in their structure