What Are Nucleic Acids and Why Do They Matter?
Nucleic acids are one of the four major macromolecules. Explore nucleotides, DNA, RNA, base pairing, and how these molecules store and carry genetic information.
What Are Lipids and Why Do They Matter?
Lipids are one of the four major macromolecules. Explore fatty acids, triglycerides, steroids, and phospholipids, plus what each one does in living things.
What Are Proteins and How Do They Work?
Learn how proteins are built from amino acids, how they fold into complex shapes, and why their structure is key to their function in the body.