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.
Pauley Perrette, Time's âPerson of the Yearâ 2016? American tabloids recently reported Pauley Perrette was pregnant after she sported what some interpreted to be a âbaby bumpâ. According to the report, a source close to the couple confirmed they were expecting a child. UPDATE 18/08/2016 : This story seems to be false. (read more)