Tell what the function of lipids do in a cell.
Is the correct answer: lipids function in a cell is to provide energy, act as structural components in a cell , and can help provide hormones.
Since this is not my area of expertise, I searched Google under the key words "lipid function" to get these possible sources:
http://www.elmhurst.edu/~chm/vchembook/620fattyacid.html
http://cellbio.utmb.edu/cellbio/membrane_intro.htm
http://www.associatedcontent.com/article/218777/the_function_of_lipids_an_indepth_explanation.html
http://en.wikipedia.org/wiki/Lipid
http://www.lipidlibrary.co.uk/Lipids/whatdo/index.htm
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.
I hope this helps. Thanks for asking.