Summary
Highlights
Definition and Functions of Carbohydrates00:00:30
Carbohydrates are molecules composed of carbon, hydrogen, and oxygen in a 2:1 ratio. They serve critical roles in energy supply, energy storage (like starch and glycogen), structural support, cellular recognition through glycoproteins, and acting as building blocks for DNA and RNA.
Understanding Monosaccharides00:02:41
Monosaccharides are simple sugars, categorized by their number of carbon atoms (e.g., pentose with 5 carbons, hexose with 6 carbons). Glucose is a key hexose sugar available in two forms, alpha and beta, which differ based on the orientation of the hydroxyl group at carbon 1. Glucose is highly soluble and energy-rich, making it vital for transport and respiration.
Formation and Breakdown of Disaccharides00:04:30
Disaccharides are formed through condensation reactions that link two monosaccharides via a glycosidic bond, releasing water in the process. Examples include maltose, sucrose, and lactose. Conversely, these bonds can be broken down through hydrolysis, which requires the addition of water to separate the sugar back into individual monosaccharides.