Can someone me, ?
organic, biological, and nuclear chemistry.

17. which of the following is not an example of a lipid?
a. waxes
b. fats
c. ribose
d. oils

18. is the radioisotope commonly used to map a human's circulatory system.
a. iron-59
b. carbon-14
c. cobalt-60
d. technetium-99m

nanotechnology is a powerful tool in biomaterials research as it creates numerous possibilities for the engineering of functional molecules. nano-bio refers to projected ability to incorporate biomimicry into various materials at nanoscale.  

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.