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.
1 Stephen Curry's wife, Ayesha, gave birth to baby Ryan Carson on Friday. 2  She is couple's second child after Riley, two, who is adored by NBA fans. 3  Stephen shared an adorable first snap of Ryan on Instagram on Tuesday.  In shot, baby is seen sleeping peacefully in older sister and mom's arms.