In this blog post, we will explore what life at the molecular level has to say about the nature of life. Biologists use two approaches in order to study life: macroscopic and microscopic. The macroscopic approach is used by observing living organisms that can be seen with the naked eye or under a microscope.
This method is limited because it cannot provide insight into why some molecules are more important than others for understanding biology. However, using the microscopic approach biologists can investigate how these molecules work together in cells and tissues to make up larger biological structures. Such as organs and body systems. The molecules that makeup living organisms can be classified into two categories. 1.macromolecules and biomacromolecules.
In contrast, the macromolecules such as polymers (polysaccharides), hormones, vitamins, and coenzymes are not composed of individual units but rather large organic compounds with repeating structural elements. They also provide energy for cells to produce life processes such as respiration and photosynthesis. Biologists use a three-step process called semi-quantitative analysis in order evaluate the substance from each category: identification by using chromatography; separation and isolation