Biomolecules Overview

Study Notes

Biomolecules

Biomolecules are organic molecules that play crucial roles in living organisms. They can be classified into four main categories: carbohydrates, lipids, proteins, and nucleic acids. Carbohydrates serve as energy sources and storage materials, while lipids act as structural components and insulators within cell membranes. Proteins facilitate various metabolic processes and maintain the integrity of cells, and nucleic acids carry genetic information and control cell growth and division.

Carbohydrates consist of carbon atoms bonded with hydrogen and oxygen atoms. Monosaccharides, like glucose, are simple sugars, whereas polysaccharides, such as starch and glycogen, are chains of monosaccharides. Lipids, including fatty acids and phospholipids, are composed of carbon, hydrogen, and sometimes oxygen atoms. Phospholipids, in particular, are amphiphilic molecules that form cell membranes due to their polar head groups and nonpolar tails. Proteins are large macromolecules built from multiple amino acids linked by peptide bonds. Nucleic acids include deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both of which contain nitrogen bases, pentose sugars, and phosphate groups.

In recent years, advances in biotechnology have enabled the discovery of new classes of biomolecules. For example, Stanford researchers have identified a new type of biomolecule, glycoRNA, which consists of RNA attached to sugar molecules called glycans. This discovery suggests that glycan modifications may play a significant role in the biology of all living things, potentially influencing conditions like autoimmune diseases.

Biomedical research often uses advanced imaging techniques to study biomolecules at high resolutions. For visually impaired individuals, specialized assistive technologies, such as screen readers and braille displays, allow them to interact with scientific databases and publications. Tools like braille displays and tactile graphics enable these individuals to interpret scientific graphs and figures based on touch rather than sight.

Understanding the structure and properties of biomolecules is essential for numerous fields, including medicine, agriculture, and environmental science. Techniques like surface plasmon resonance (SPR) allow researchers to analyze the interactions between biomolecules in real-time, helping to advance knowledge about the mechanisms underlying biological processes and aid in the development of diagnostic tests and therapies.

Description

Explore the fundamental categories of biomolecules - carbohydrates, lipids, proteins, and nucleic acids - and their roles in living organisms. Learn about their structures, functions, and the recent discovery of new biomolecule classes like glycoRNA. Understand how advanced imaging techniques and assistive technologies support biomolecule research and accessibility in the scientific community.