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.
Now that Kailynâs kicked her boyfriend Jordan Wenner to the curb, sheâs moving on with a much younger man â 17-year-old Mike Lush! Teen Mom 2 star Kailyn Lowry is heating up with a high schooler, making her the youngest cougar around! The 19-year-old is dating Allentown, Pa. high school senior Mike Lush, 17, and reportedly theyâre inseparable!