WGU C190 Intro to Biology UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Non-living, may be within or made by a living organism. - CORRECT ANSWER -
Abiotic
Living. Matter is considered ______ if it was ever alive at some point in time - CORRECT
ANSWER - Biotic
Smallest level. The basic unit of matter. Consists of a dense nucleus surrounded by electrons. -
CORRECT ANSWER - Atom
Second level. A chemical structure consisting of at least two atoms held together by a chemical
bond. - CORRECT ANSWER - Molecule
Third level. Biologically important molecules that are technically polymers. Example: DNA. -
CORRECT ANSWER - Macromolecule
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. - CORRECT ANSWER - Cell
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. - CORRECT ANSWER - Organelle
Sixth level. Single-celled life form. Consists of just one cell and include unicellular organisms
such as bacteria and protists. - CORRECT ANSWER - Microorganism
,Seventh level. Formed when similar cells work together to fulfill the same detailed function. -
CORRECT ANSWER - Tissue
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. - CORRECT ANSWER - Organ
Ninth level. Consists of functionally related organs. Mammals have many. - CORRECT
ANSWER - Organ System
Tenth Level. Individual living entities that survive and reproduce as a unit. For example, each
tree in a forest. - CORRECT ANSWER - Organism
Eleventh level. Consists of all the individuals of a species living within a specific area. -
CORRECT ANSWER - Population
Twelfth level. Populations can interact with each other in positive and negative ways, and
together they form this. - CORRECT ANSWER - Community
Thirteenth level. Consists of all the living things in a particular area together with the abiotic, or
nonliving, parts of that environment. - CORRECT ANSWER - Ecosystem
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. -
CORRECT ANSWER - Biosphere
Characteristics of a system that are not present in any of its component parts. - CORRECT
ANSWER - Emergent Properties
The scientific study of life and is the branch of science that studies living organisms and the way
organisms interact with their environments. - CORRECT ANSWER - Biology
,The ability or tendency of organisms and cells to maintain stable internal conditions. -
CORRECT ANSWER - Homeostasis
Any matter an organism needs but cannot make for itself. - CORRECT ANSWER -
Nutrient
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. - CORRECT ANSWER - Energy
An increase in size. - CORRECT ANSWER - Growth
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. - CORRECT
ANSWER - Development
Occurs when an individual organism passes on its genetic information to a newly independent
organism, or offspring. - CORRECT ANSWER - Reproduction
A scientific theory that explains how and why life changes over time. Provides the explanation
for why all living organisms share profound similarities, and yet, the life forms on our planet are
so incredibly diverse. - CORRECT ANSWER - Evolution
Individuals are always a bit different from their parents and from each other, partly because of
changes to their genes. These differences may be helpful or harmful to the individuals that inherit
them. In nature, individuals often have very low odds of surviving to reproduce. Individuals with
slightly harmful or even average characteristics might be less likely to make it, and those with
traits that fit in very well with the local habitat will have the greatest chance to survive and
reproduce. This sorting process goes on generation after generation. - CORRECT
ANSWER - Natural Selection
, The sum of the number of protons and the number of neutrons. The mass of an atom. -
CORRECT ANSWER - Atomic Mass
The number of protons in an atom, displayed for each atom in the periodic table. - CORRECT
ANSWER - Atomic Number
Attractions between atoms that hold atoms and molecules together. - CORRECT
ANSWER - Chemical Bonds
Strongest chemical bond. Occurs between atoms of in the same molecule. Electron pairs are
shared, creating a strong bond between atoms. - CORRECT ANSWER - Covalent Bonds
Subatomic particle, located in shells on the outside of the nucleus, has a negative charge and
almost no mass. - CORRECT ANSWER - electron
A measure of the tendency of an atom to attract a bonding pair of electrons. How strongly does
an atoms attract bonding electrons to itself? - CORRECT ANSWER - electronegativity
Atoms with unique properties, designated by the atomic number. - CORRECT ANSWER -
element
Weak chemical bond. Occurs between atoms in different molecules or parts of molecules. Weak
electrostatic attraction between areas of molecules with opposite partial charges. - CORRECT
ANSWER - hydrogen bond
Positively or negatively charged atom. - CORRECT ANSWER - ion
Moderately strong chemical bond. Occurs between atoms in the same molecule. Electrons
transfer from one atom to another. - CORRECT ANSWER - ionic bond
ACTUAL Exam Questions and CORRECT
Answers
Non-living, may be within or made by a living organism. - CORRECT ANSWER -
Abiotic
Living. Matter is considered ______ if it was ever alive at some point in time - CORRECT
ANSWER - Biotic
Smallest level. The basic unit of matter. Consists of a dense nucleus surrounded by electrons. -
CORRECT ANSWER - Atom
Second level. A chemical structure consisting of at least two atoms held together by a chemical
bond. - CORRECT ANSWER - Molecule
Third level. Biologically important molecules that are technically polymers. Example: DNA. -
CORRECT ANSWER - Macromolecule
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. - CORRECT ANSWER - Cell
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. - CORRECT ANSWER - Organelle
Sixth level. Single-celled life form. Consists of just one cell and include unicellular organisms
such as bacteria and protists. - CORRECT ANSWER - Microorganism
,Seventh level. Formed when similar cells work together to fulfill the same detailed function. -
CORRECT ANSWER - Tissue
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. - CORRECT ANSWER - Organ
Ninth level. Consists of functionally related organs. Mammals have many. - CORRECT
ANSWER - Organ System
Tenth Level. Individual living entities that survive and reproduce as a unit. For example, each
tree in a forest. - CORRECT ANSWER - Organism
Eleventh level. Consists of all the individuals of a species living within a specific area. -
CORRECT ANSWER - Population
Twelfth level. Populations can interact with each other in positive and negative ways, and
together they form this. - CORRECT ANSWER - Community
Thirteenth level. Consists of all the living things in a particular area together with the abiotic, or
nonliving, parts of that environment. - CORRECT ANSWER - Ecosystem
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. -
CORRECT ANSWER - Biosphere
Characteristics of a system that are not present in any of its component parts. - CORRECT
ANSWER - Emergent Properties
The scientific study of life and is the branch of science that studies living organisms and the way
organisms interact with their environments. - CORRECT ANSWER - Biology
,The ability or tendency of organisms and cells to maintain stable internal conditions. -
CORRECT ANSWER - Homeostasis
Any matter an organism needs but cannot make for itself. - CORRECT ANSWER -
Nutrient
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. - CORRECT ANSWER - Energy
An increase in size. - CORRECT ANSWER - Growth
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. - CORRECT
ANSWER - Development
Occurs when an individual organism passes on its genetic information to a newly independent
organism, or offspring. - CORRECT ANSWER - Reproduction
A scientific theory that explains how and why life changes over time. Provides the explanation
for why all living organisms share profound similarities, and yet, the life forms on our planet are
so incredibly diverse. - CORRECT ANSWER - Evolution
Individuals are always a bit different from their parents and from each other, partly because of
changes to their genes. These differences may be helpful or harmful to the individuals that inherit
them. In nature, individuals often have very low odds of surviving to reproduce. Individuals with
slightly harmful or even average characteristics might be less likely to make it, and those with
traits that fit in very well with the local habitat will have the greatest chance to survive and
reproduce. This sorting process goes on generation after generation. - CORRECT
ANSWER - Natural Selection
, The sum of the number of protons and the number of neutrons. The mass of an atom. -
CORRECT ANSWER - Atomic Mass
The number of protons in an atom, displayed for each atom in the periodic table. - CORRECT
ANSWER - Atomic Number
Attractions between atoms that hold atoms and molecules together. - CORRECT
ANSWER - Chemical Bonds
Strongest chemical bond. Occurs between atoms of in the same molecule. Electron pairs are
shared, creating a strong bond between atoms. - CORRECT ANSWER - Covalent Bonds
Subatomic particle, located in shells on the outside of the nucleus, has a negative charge and
almost no mass. - CORRECT ANSWER - electron
A measure of the tendency of an atom to attract a bonding pair of electrons. How strongly does
an atoms attract bonding electrons to itself? - CORRECT ANSWER - electronegativity
Atoms with unique properties, designated by the atomic number. - CORRECT ANSWER -
element
Weak chemical bond. Occurs between atoms in different molecules or parts of molecules. Weak
electrostatic attraction between areas of molecules with opposite partial charges. - CORRECT
ANSWER - hydrogen bond
Positively or negatively charged atom. - CORRECT ANSWER - ion
Moderately strong chemical bond. Occurs between atoms in the same molecule. Electrons
transfer from one atom to another. - CORRECT ANSWER - ionic bond
