Kaplan Nursing Entrance Exam Practice 2025 – Comprehensive Prep

Proteins are essential macromolecules that serve a variety of functions in biological systems. One of their primary roles is acting as hormones, which are signaling molecules that facilitate communication between different parts of the body. Additionally, proteins can function as enzymes, catalyzing biochemical reactions and thereby playing a crucial role in metabolic processes.

Moreover, proteins are involved in various cellular processes, including cell membrane trafficking, where they assist in the transport of substances in and out of cells and help with communication and signaling within and between cells.

In contrast, the characteristic that states proteins contain genetic information is inaccurate. Genetic information is stored in nucleic acids, specifically DNA and RNA, not in proteins. While proteins are synthesized based on the genetic instructions found in DNA, they do not themselves carry this genetic information. This distinction highlights why the assertion that proteins contain genetic information is not a characteristic of proteins.