Final answer:
Biological molecules like amino acids and proteins are measured in nanometers; a scale which helps to understand the hierarchical structure of living organisms, starting from atoms to complex macromolecules.
Step-by-step explanation:
Biological molecules such as amino acids and proteins exist at a microscopic size which is measured in units called nanometers (D).
In the context of biology, living things showcase a complex organizational hierarchy that starts from atoms, the most fundamental unit of matter. These atoms bond to form molecules, which further constitute macromolecules like proteins and nucleic acids, including DNA which directs the functioning of organisms. The study of these biomolecules falls under the domain of biochemistry, a pivotal area in understanding the structure, function, and roles of the constituents that define life. These biomolecules vary in size, but are often measured in nanometers, a scale that allows biologists to investigate the intricate details of life's building blocks through advanced microscopy and other technologies, enhancing our comprehension of biological processes.
Biologists can now study life at a wide range of sizes and complexity using advanced technology. The very biomolecules that define life, such as amino acids and proteins, are known to exist at a microscopic size which is measured in units called micrometers (C). Micrometers are one millionth of a meter, or about 0.000001 meters. This small scale allows biologists to study the intricate structures and functions of these biomolecules.