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.
February 23, 2017. Teen Mom 2âs Kailyn Lowry Is Pregnant and Expecting Her Third Child. Another bundle of joy! Teen Mom 2âs Kailyn Lowry is pregnant and expecting her third child, she confirmed to The Ashley on Thursday, February 23.