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4 Written questions

3 Multiple choice questions

  1. Nonpolar molecules that are not soluble or mostly insoluble in water. They include fats, phospholipds, steroids, and waxes.
  2. signal molecule released into the bloodstream that triggers particular responses
  3. steroid molecule present in the plasma membranes of animal cells

3 True/False questions

  1. Fatsorganic compound consisting of a three-carbon backbone (glycerol) attached to three fatty acids


  2. Steroidsa subgroup of the steroids and an important class of organic molecules. They occur naturally in plants, animals, and fungi, with the most familiar type of animal sterol being cholesterol. Cholesterol is vital to cellular function, and a precursor to fat-soluble vitamins and steroid hormones.


  3. phospholipidsHave two, rather than three, fatty acids attached to a molecule of glycerol