What kinds of biomolecules are insoluble in water but solub

_____ What kinds of biomolecules are insoluble in water but soluble in alcohol or ether? _____ 9. If two fatty acids, glycerol, and a phosphate group undergo a dehydration reaction, what biomolecule forms? ____ What is the name used for plant fats? _____ What must be present to successfully break down fats during digestion? _____ If you test an unknown substance with the biuret reagent and it turns purple, what is present? _______ If you test a sample of potato with the biuret reagent, what do you expect the results to be? ______ If you want to test a sample to see if glucose is present, what reagent should you use? If amylase is added to a sample of potato and you test it with Benedict\'s reagent 10 minutes later, what do expect the results of the test to be? Justify your reply. After enjoying a meal of fish and you notice your shirt has an oily stain on it. Why won\'t the oily stain chips, come out when you dab at it with just water? If the sample water you test with biuret reagent turns purple, what should you conclude about the results of of your experiment? Explain

Solution

8. Lipids are biomolecules are not soluble in water but is soluble in alcohol or ether. Lipids are nonpolar molecules and are soluble in nonpolar solvents like alcohol or ether.

9. A diacyl glycerol molecule contains two fatty acids, glycerol and phosphate. When a diacyl glycerol undergoes dehydration synthesis, a water molecule and a fatty acid molecule is removed producing a monoglyceride.

10. Plant fats are called oils. Oils are fats that are liquids at room temperature.

11. Fat digesting enzymes are called lipases. Successful digestion of fats depend on the lipase enzyme.

12. Biuret reagent is used to test the presence of peptide bonds or proteins.

13. The test of potato with biuret reagent does not give any result or produce no color.