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.
We Finally Know What Chris Lopez Looks Like â Plus More on Kailyn Lowry's Baby Daddy! 1  1. One time, he referred to the unborn child as a miracle.. 2  2. Another time, he threw shade at her ex-husband, Javi Marroquin, on Twitter. 3  3. He allegedly has reservations about joining the MTV reality series. 4  4. Except he's already appeared on Teen Mom 2.