C190 - Introduction to Biology WGU - Unit
1: Modules 1 2 & 3 UPDATED ACTUAL
Exam Questions and CORRECT Answers
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)
1: Modules 1 2 & 3 UPDATED ACTUAL
Exam Questions and CORRECT Answers
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)
