WGU C190 Intro To Biology Exam | Questions With 100% Correct Answers | Verified | Latest Update | 2025/2026

WGU C190 Intro To Biology Exam | Questions With 100% Correct Answers | Verified | Latest Update | 2025/2026 Abiotic - answer-Non-living, may be within or made by a living organism. Biotic - answer-Living. Matter is considered ______ if it was ever alive at some point in time Atom - answer-Smallest level. The basic unit of matter. Consists of a dense nucleus surrounded by electrons. Molecule - answer-Second level. A chemical structure consisting of at least two atoms held together by a chemical bond. Macromolecule - answer-Third level. Biologically important molecules that are technically polymers. Example: DNA. Cell - answer-Fourth level. The fundamental unit of life. Essentially a tiny droplet of water and other molecules enclosed by a fluid "skin" or membrane. The smallest and simplest entity that possesses all the characteristics of life. Organelle - answer-Fifth level. Compartments inside the cell that contain specific groups of macromolecules and carry out specific cellular functions. One of these organelles is the nucleus; it encloses the DNA within the cell. Microorganism - answer-Sixth level. Single-celled life form. Consists of just one cell and include unicellular organisms such as bacteria and protists.Tissue - answer-Seventh level. Formed when similar cells work together to fulfill the same detailed function. Organ - answer-Eighth level. Collections of tissues that work together to carry out a common general function. Present not only in higher level animals but also in plants. Organ System - answer-Ninth level. Consists of functionally related organs. Mammals have many. Organism - answer-Tenth Level. Individual living entities that survive and reproduce as a unit. For example, each tree in a forest. Population - answer-Eleventh level. Consists of all the individuals of a species living within a specific area. Community - answer-Twelfth level. Populations can interact with each other in positive and negative ways, and together they form this.