WGU C190 Intro to Biology Exam Test with Verified Answers Graded A+
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Course
WGU C190 Intro to Biology
Institution
WGU C190 Intro To Biology
WGU C190 Intro to Biology Exam Test with Verified Answers Graded A+
1. Abiotic Non-living, may be within or made by a living organism.
2. Biotic Living. Matter is considered if it was ever alive at
some point in time
3. Atom Smallest level. The basic unit of matter. Consists of a
dense nucleus...
WGU C190 Intro to Biology Exam Test with Verified Answers Graded A+
1. Abiotic Non-living, may be within or made by a living organism.
2. Biotic Living. Matter is considered if it was ever alive at
some point in time
3. Atom Smallest level. The basic unit of matter. Consists of a
dense nucleus surrounded by electrons.
4. Molecule Second level. A chemical structure consisting of at least
two atoms held together by a chemical bond.
5. Macromolecule Third level. Biologically important molecules that are tech-
nically polymers. Example: DNA.
6. Cell 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.
7. Organelle 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.
8. Microorganism Sixth level. Single-celled life form. Consists of just one cell
and include unicellular organisms such as bacteria and
protists.
9. Tissue Seventh level. Formed when similar cells work together to
fulfill the same detailed function.
10. Organ 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.
11. Organ System Ninth level. Consists of functionally related organs. Mam-
mals have many.
12. Organism Tenth Level. Individual living entities that survive and re-
produce as a unit. For example, each tree in a forest.
,WGU C190 Intro to Biology Exam Test with Verified Answers Graded A+
13. Population Eleventh level. Consists of all the individuals of a species
living within a specific area.
14. Community Twelfth level. Populations can interact with each other in
positive and negative ways, and together they form this.
15. Ecosystem Thirteenth level. Consists of all the living things in a par-
ticular area together with the abiotic, or nonliving, parts of
that environment.
16. Biosphere Fourteenth level. The highest level of organization in liv-
ing 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.
17. Emergent Prop- Characteristics of a system that are not present in any of
erties its component parts.
18. Biology The scientific study of life and is the branch of science that
studies living organisms and the way organisms interact
with their environments.
19. Homeostasis The ability or tendency of organisms and cells to maintain
stable internal conditions.
20. Nutrient Any matter an organism needs but cannot make for itself.
21. Energy 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.
22. Growth An increase in size.
23. Development 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 in-
structions.
, WGU C190 Intro to Biology Exam Test with Verified Answers Graded A+
24. Reproduction Occurs when an individual organism passes on its ge-
netic information to a newly independent organism, or
offspring.
25. Evolution 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.
26. Natural Selection 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.
27. Atomic Mass The sum of the number of protons and the number of
neutrons. The mass of an atom.
28. Atomic Number The number of protons in an atom, displayed for each
atom in the periodic table.
29. Chemical Bonds Attractions between atoms that hold atoms and mole-
cules together.
30. Covalent Bonds Strongest chemical bond. Occurs between atoms of in
the same molecule. Electron pairs are shared, creating a
strong bond between atoms.
31. electron Subatomic particle, located in shells on the outside of the
nucleus, has a negative charge and almost no mass.
32. electronegativity 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?
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