C190 - Introduction to Biology WGU -
Unit 1: Modules 1 2 & 3 EXAM
QUESTIONS AND ANSWERS
VERIFIED TO PASS 2026
Matter - correct answer ✔Any substance that has mass and takes up space
2 classes of matter - correct answer ✔biotic (living/have lived)
abiotic (nonliving/never alive)
The basic unit of matter - correct answer ✔the atom
The atom is made up of: - correct answer ✔a dense nucleus surrounded by electrons
Atoms join together and form: - correct answer ✔molecules
Molecules consist of: - correct answer ✔at least two atoms held together by a chemical bond
Macromolecules are: - correct answer ✔biologically important molecules AKA polymers
Polymers are made by: - correct answer ✔combining smaller units called monomers (simpler
macromolecules)
Macromolecule example: - correct answer ✔DNA (built of 4 kinds of monomers (nucleotides) strung
together (polymerized) in a sequence that codes for structure of proteins and other bio molecules.)
, Building blocks of a cell: - correct answer ✔when macromolecules form a membrane-bound sphere
Two main types of cells: - correct answer ✔prokaryotes and eukaryotes
Prokaryote characteristics: - correct answer ✔small and simple, they do not have any clearly defined
compartments inside of them
Eukaryote characteristics: - correct answer ✔include membrane-bound organelles (can be complex)
Organelle characteristics: - correct answer ✔compartments inside the cell that contain specific groups
of macromolecules and carry out specific cellular functions (i.e. the nucleus which encloses DNA within
the cell)
Microorganisms: - correct answer ✔single-celled life forms
Tissues are formed when: - correct answer ✔similar cells work together to fulfill the same detailed
function
Organs are formed when: - correct answer ✔collections of tissues work together to carry out a
common general function
Organ systems are formed when: - correct answer ✔functionally related organs work together in a
higher level of organization (i.e. the circulatory system)
Organisms are: - correct answer ✔individual living entities that survive and reproduce as a unit (i.e. a
tree in a forest)
A population consists of: - correct answer ✔all the individuals of a species living within a specific area
(i.e. a forest with many pine trees)
Unit 1: Modules 1 2 & 3 EXAM
QUESTIONS AND ANSWERS
VERIFIED TO PASS 2026
Matter - correct answer ✔Any substance that has mass and takes up space
2 classes of matter - correct answer ✔biotic (living/have lived)
abiotic (nonliving/never alive)
The basic unit of matter - correct answer ✔the atom
The atom is made up of: - correct answer ✔a dense nucleus surrounded by electrons
Atoms join together and form: - correct answer ✔molecules
Molecules consist of: - correct answer ✔at least two atoms held together by a chemical bond
Macromolecules are: - correct answer ✔biologically important molecules AKA polymers
Polymers are made by: - correct answer ✔combining smaller units called monomers (simpler
macromolecules)
Macromolecule example: - correct answer ✔DNA (built of 4 kinds of monomers (nucleotides) strung
together (polymerized) in a sequence that codes for structure of proteins and other bio molecules.)
, Building blocks of a cell: - correct answer ✔when macromolecules form a membrane-bound sphere
Two main types of cells: - correct answer ✔prokaryotes and eukaryotes
Prokaryote characteristics: - correct answer ✔small and simple, they do not have any clearly defined
compartments inside of them
Eukaryote characteristics: - correct answer ✔include membrane-bound organelles (can be complex)
Organelle characteristics: - correct answer ✔compartments inside the cell that contain specific groups
of macromolecules and carry out specific cellular functions (i.e. the nucleus which encloses DNA within
the cell)
Microorganisms: - correct answer ✔single-celled life forms
Tissues are formed when: - correct answer ✔similar cells work together to fulfill the same detailed
function
Organs are formed when: - correct answer ✔collections of tissues work together to carry out a
common general function
Organ systems are formed when: - correct answer ✔functionally related organs work together in a
higher level of organization (i.e. the circulatory system)
Organisms are: - correct answer ✔individual living entities that survive and reproduce as a unit (i.e. a
tree in a forest)
A population consists of: - correct answer ✔all the individuals of a species living within a specific area
(i.e. a forest with many pine trees)
