WGU C190 Intro to biology 2025 (based off of the study guide provided by the school) Unit 2 study guide Q&A | 100% Correct | the Ultimate Guide for Yr. 2026/2027

WGU C190 Intro to biology 2025 (based off of the study
guide provided by the school) Unit 2 study guide Q&A |
100% Correct | the Ultimate Guide for Yr. 2026/2027
Terms in this set (35)




Cell, Tissue, Organ, Organ system,
Organism, Population, Community,
Biological Levels of Ecosystem, Biome, Biosphere.
Organization


(Unit 2 module 3. Atoms) The smallest part of a substance that
Atom cannot be broken down chemically.
Basic building block of matter. Atoms
are made up of three types of
subatomic particles:
-Protons: +1 charge, location:
Nucleus
-Neutrons: 0 charge, location:
Nucleus
-Electrons:-1 charge, location:
Orbitals

, The strength at which an atom holds
shared electrons in a bond/ The ability
(Unit 2 module 3. Atoms)
of an atom to attract shared electrons
Electronegativity factors into the polarity and strength of
bonds due to varying electron attraction




(Unit 2 module 3. Atoms)
Electron shells




regions surrounding an atom's nucleus
that contain electrons.
1st shell: Maximum of 2 electrons
2nd shell: Maximum of 8 electrons
3rd shell: Maximum of 8 electrons

the number of protons in the nucleus of
an atom
(Unit 2 module 3. Atoms)
Atomic Number



the total number of protons and
neutrons in a nucleus.
(Unit 2 module 3 Atoms)
Mass number



Vertical columns indicating similar
properties
(Unit 2 module 3 Atoms)
periodic table groups