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.
Unfortunately, a source for The Ashleyâs Reality Roundup reveals that Catelynn was indeed pregnant, and there is a reason we havenât heard anything from the Baltierraâs about it. âCatelynn got pregnant and surprised Tyler and Nova and then had a miscarriage not long after,â The Ashleyâs source reveals. âThat happened right before she went to treatment [in November] when she tweeted about thinking about killing herself.â