Carbohydrates, lipids -- also known as fats -- nucleic acids, and proteins are the four major classes of biomolecules, or molecules that form the structural and functional components of cells. Each of these types of molecules consists of a carbon skeleton, or backbone, explain Drs.
Teen Mom Kailyn Lowry and her boyfriend Javi Marroquin are expecting their first child together. Credit: INFphoto.com. Kailyn Lowry is ready for baby No. 2! The Teen Mom 2 star is expecting her first child with husband Javi Marroquin, multiple sources confirm to Us Weekly. Kail is pregnant, a source confirms to Us.
'I'm pregnant again': Teen Mom 2 star Kailyn Lowry expecting baby with new husband. Teen Mom 2 star Kailyn Lowry has revealed she's pregnant with her second child. The 21-year-old married husband Javi Marroquin, 20, in September before he left for Air Force training in Texas and they are expecting their first baby together. Reality stars: The newlyweds found fame on the hit MTV show Teen Mom 2.