WGU C190 INTRO TO BIOLOGY FINAL EXAM AND
PRE ASSESSMENT EXAM 2024 ACTUAL EXAM
COMPREHENSIVE QUESTIONS WITH DETAILED
VERIFIED ANSWERS (100% CORRECT ANSWERS)
/ALREADY GRADED A+
Non-living, may be within or made by a living organism. - ANSWER Abiotic
Living. Matter is considered ______ if it was ever alive at some point in time - ANSWER
Biotic
Smallest level. The basic unit of matter. Consists of a dense nucleus surrounded by
electrons. - ANSWER Atom
Second level. A chemical structure consisting of at least two atoms held together by a
chemical bond. - ANSWER Molecule
Third level. Biologically important molecules that are technically polymers. Example:
DNA. - 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. - 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. - ANSWER Organelle
Sixth level. Single-celled life form. Consists of just one cell and include unicellular
organisms such as bacteria and protists. - ANSWER Microorganism
Seventh level. Formed when similar cells work together to fulfill the same detailed
function. - 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. - ANSWER Organ
Ninth level. Consists of functionally related organs. Mammals have many. - ANSWER
Organ System
,Tenth Level. Individual living entities that survive and reproduce as a unit. For example,
each tree in a forest. - ANSWER Organism
Eleventh level. Consists of all the individuals of a species living within a specific area. -
ANSWER Population
Twelfth level. Populations can interact with each other in positive and negative ways,
and together they form this. - ANSWER Community
Thirteenth level. Consists of all the living things in a particular area together with the
abiotic, or nonliving, parts of that environment. - 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. - ANSWER Biosphere
Characteristics of a system that are not present in any of its component parts. -
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. - ANSWER Biology
The ability or tendency of organisms and cells to maintain stable internal conditions. -
ANSWER Homeostasis
Any matter an organism needs but cannot make for itself. - 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. - ANSWER Energy
An increase in size. - 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. -
ANSWER Development
Occurs when an individual organism passes on its genetic information to a newly
independent organism, or offspring. - 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. - 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. - ANSWER Natural Selection
The sum of the number of protons and the number of neutrons. The mass of an atom. -
ANSWER Atomic Mass
The number of protons in an atom, displayed for each atom in the periodic table. -
ANSWER Atomic Number
Attractions between atoms that hold atoms and molecules together. - ANSWER
Chemical Bonds
Strongest chemical bond. Occurs between atoms of in the same molecule. Electron
pairs are shared, creating a strong bond between atoms. - ANSWER Covalent Bonds
Subatomic particle, located in shells on the outside of the nucleus, has a negative
charge and almost no mass. - 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? - ANSWER electronegativity
Atoms with unique properties, designated by the atomic number. - 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. - ANSWER hydrogen bond
Positively or negatively charged atom. - ANSWER ion
Moderately strong chemical bond. Occurs between atoms in the same molecule.
Electrons transfer from one atom to another. - ANSWER ionic bond
Any or two or more forms of a chemical element, having the same number of protons in
the nucleus, or the same atomic number, but having different numbers of neutrons in
the nucleus, or different atomic weights. - ANSWER isotope
Anything that occupies space and has mass. - ANSWER matter
A formula giving the number of atoms of each of the elements present in one molecule
of a specific compound. - ANSWER molecular formula
PRE ASSESSMENT EXAM 2024 ACTUAL EXAM
COMPREHENSIVE QUESTIONS WITH DETAILED
VERIFIED ANSWERS (100% CORRECT ANSWERS)
/ALREADY GRADED A+
Non-living, may be within or made by a living organism. - ANSWER Abiotic
Living. Matter is considered ______ if it was ever alive at some point in time - ANSWER
Biotic
Smallest level. The basic unit of matter. Consists of a dense nucleus surrounded by
electrons. - ANSWER Atom
Second level. A chemical structure consisting of at least two atoms held together by a
chemical bond. - ANSWER Molecule
Third level. Biologically important molecules that are technically polymers. Example:
DNA. - 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. - 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. - ANSWER Organelle
Sixth level. Single-celled life form. Consists of just one cell and include unicellular
organisms such as bacteria and protists. - ANSWER Microorganism
Seventh level. Formed when similar cells work together to fulfill the same detailed
function. - 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. - ANSWER Organ
Ninth level. Consists of functionally related organs. Mammals have many. - ANSWER
Organ System
,Tenth Level. Individual living entities that survive and reproduce as a unit. For example,
each tree in a forest. - ANSWER Organism
Eleventh level. Consists of all the individuals of a species living within a specific area. -
ANSWER Population
Twelfth level. Populations can interact with each other in positive and negative ways,
and together they form this. - ANSWER Community
Thirteenth level. Consists of all the living things in a particular area together with the
abiotic, or nonliving, parts of that environment. - 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. - ANSWER Biosphere
Characteristics of a system that are not present in any of its component parts. -
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. - ANSWER Biology
The ability or tendency of organisms and cells to maintain stable internal conditions. -
ANSWER Homeostasis
Any matter an organism needs but cannot make for itself. - 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. - ANSWER Energy
An increase in size. - 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. -
ANSWER Development
Occurs when an individual organism passes on its genetic information to a newly
independent organism, or offspring. - 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. - 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. - ANSWER Natural Selection
The sum of the number of protons and the number of neutrons. The mass of an atom. -
ANSWER Atomic Mass
The number of protons in an atom, displayed for each atom in the periodic table. -
ANSWER Atomic Number
Attractions between atoms that hold atoms and molecules together. - ANSWER
Chemical Bonds
Strongest chemical bond. Occurs between atoms of in the same molecule. Electron
pairs are shared, creating a strong bond between atoms. - ANSWER Covalent Bonds
Subatomic particle, located in shells on the outside of the nucleus, has a negative
charge and almost no mass. - 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? - ANSWER electronegativity
Atoms with unique properties, designated by the atomic number. - 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. - ANSWER hydrogen bond
Positively or negatively charged atom. - ANSWER ion
Moderately strong chemical bond. Occurs between atoms in the same molecule.
Electrons transfer from one atom to another. - ANSWER ionic bond
Any or two or more forms of a chemical element, having the same number of protons in
the nucleus, or the same atomic number, but having different numbers of neutrons in
the nucleus, or different atomic weights. - ANSWER isotope
Anything that occupies space and has mass. - ANSWER matter
A formula giving the number of atoms of each of the elements present in one molecule
of a specific compound. - ANSWER molecular formula
