WGU C190 Intro to Biology Exam with
Questions and Correct Answers 2025
,Abiotic - CORRECT ANSWER-Non-living, may be within or made by a living organism.
Biotic - CORRECT ANSWER-Living. Matter is considered if it was ever alive at
some point in time
Atom - CORRECT ANSWER-Smallest level. The basic unit of matter. Consists of a dense nucleus
surrounded by electrons.
Molecule - CORRECT ANSWER-Second level. A chemical structure consisting of at least two atoms
held together by a chemical bond.
Macromolecule - CORRECT ANSWER-Third level. Biologically important molecules that are
technically polymers. Example: DNA.
Cell - CORRECT 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 - CORRECT 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 - CORRECT ANSWER-Sixth level. Single-celled life form. Consists of just one cell and
include unicellular organisms such as bacteria and protists.
Tissue - CORRECT ANSWER-Seventh level. Formed when similar cells work together to fulfill the
same detailed function.
Organ - CORRECT 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 - CORRECT ANSWER-Ninth level. Consists of functionally related organs. Mammals
have many.
, Organism - CORRECT ANSWER-Tenth Level. Individual living entities that survive and reproduce
as a unit. For example, each tree in a forest.
Population - CORRECT ANSWER-Eleventh level. Consists of all the individuals of a species living
within a specific area.
Community - CORRECT ANSWER-Twelfth level. Populations can interact with each other in
positive and negative ways, and together they form this.
Ecosystem - CORRECT ANSWER-Thirteenth level. Consists of all the living things in a particular
area together with the abiotic, or nonliving, parts of that environment.
Biosphere - CORRECT ANSWER-Fourteenth level. The highest level of organization in living
systems. The collection of all ecosystems on Earth. Includes all habitable zones on the planet,
including land, soil, and rocks to a great depth in the Earth's crust; water and ice; and the
atmosphere to a great height.
Emergent Properties - CORRECT ANSWER-Characteristics of a system that are not present in any
of its component parts.
Biology - CORRECT ANSWER-The scientific study of life and is the branch of science that studies
living organisms and the way organisms interact with their environments.
Homeostasis - CORRECT ANSWER-The ability or tendency of organisms and cells to maintain
stable internal conditions.
Nutrient - CORRECT ANSWER-Any matter an organism needs but cannot make for itself.
Energy - CORRECT ANSWER-The capacity to do work or to make a change in the location,
temperature, or structure of matter. Does not have mass and it does not take up space, but it can
be measured in terms of what it does.
Growth - CORRECT ANSWER-An increase in size.
Development - CORRECT ANSWER-Structure and function change in an orderly way as an organism
passes through its life cycle. An individual's pattern of is
partly determined by genetic instructions.
Reproduction - CORRECT ANSWER-Occurs when an individual organism passes on its genetic
information to a newly independent organism, or offspring.
Questions and Correct Answers 2025
,Abiotic - CORRECT ANSWER-Non-living, may be within or made by a living organism.
Biotic - CORRECT ANSWER-Living. Matter is considered if it was ever alive at
some point in time
Atom - CORRECT ANSWER-Smallest level. The basic unit of matter. Consists of a dense nucleus
surrounded by electrons.
Molecule - CORRECT ANSWER-Second level. A chemical structure consisting of at least two atoms
held together by a chemical bond.
Macromolecule - CORRECT ANSWER-Third level. Biologically important molecules that are
technically polymers. Example: DNA.
Cell - CORRECT 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 - CORRECT 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 - CORRECT ANSWER-Sixth level. Single-celled life form. Consists of just one cell and
include unicellular organisms such as bacteria and protists.
Tissue - CORRECT ANSWER-Seventh level. Formed when similar cells work together to fulfill the
same detailed function.
Organ - CORRECT 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 - CORRECT ANSWER-Ninth level. Consists of functionally related organs. Mammals
have many.
, Organism - CORRECT ANSWER-Tenth Level. Individual living entities that survive and reproduce
as a unit. For example, each tree in a forest.
Population - CORRECT ANSWER-Eleventh level. Consists of all the individuals of a species living
within a specific area.
Community - CORRECT ANSWER-Twelfth level. Populations can interact with each other in
positive and negative ways, and together they form this.
Ecosystem - CORRECT ANSWER-Thirteenth level. Consists of all the living things in a particular
area together with the abiotic, or nonliving, parts of that environment.
Biosphere - CORRECT ANSWER-Fourteenth level. The highest level of organization in living
systems. The collection of all ecosystems on Earth. Includes all habitable zones on the planet,
including land, soil, and rocks to a great depth in the Earth's crust; water and ice; and the
atmosphere to a great height.
Emergent Properties - CORRECT ANSWER-Characteristics of a system that are not present in any
of its component parts.
Biology - CORRECT ANSWER-The scientific study of life and is the branch of science that studies
living organisms and the way organisms interact with their environments.
Homeostasis - CORRECT ANSWER-The ability or tendency of organisms and cells to maintain
stable internal conditions.
Nutrient - CORRECT ANSWER-Any matter an organism needs but cannot make for itself.
Energy - CORRECT ANSWER-The capacity to do work or to make a change in the location,
temperature, or structure of matter. Does not have mass and it does not take up space, but it can
be measured in terms of what it does.
Growth - CORRECT ANSWER-An increase in size.
Development - CORRECT ANSWER-Structure and function change in an orderly way as an organism
passes through its life cycle. An individual's pattern of is
partly determined by genetic instructions.
Reproduction - CORRECT ANSWER-Occurs when an individual organism passes on its genetic
information to a newly independent organism, or offspring.
