WGU C190 INTRO TO BIOLOGY REVIEW
QUESTIONS AND ANSWERS LATEST UPDATE
GUARANTEED SUCCESS
Abiotic
Non-living, may be within or made by a living organism.
Biotic
Living. Matter is considered ______ if it was ever alive at some point in time
Atom
Smallest level. The basic unit of matter. Consists of a dense nucleus surrounded by
electrons.
Molecule
Second level. A chemical structure consisting of at least two atoms held together by a
chemical bond.
Macromolecule
,Third level. Biologically important molecules that are technically polymers. Example:
DNA.
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.
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.
Microorganism
Sixth level. Single-celled life form. Consists of just one cell and include unicellular
organisms such as bacteria and protists.
Tissue
Seventh level. Formed when similar cells work together to fulfill the same detailed
function.
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.
,Organ System
Ninth level. Consists of functionally related organs. Mammals have many.
Organism
Tenth Level. Individual living entities that survive and reproduce as a unit. For example,
each tree in a forest.
Population
Eleventh level. Consists of all the individuals of a species living within a specific area.
Community
Twelfth level. Populations can interact with each other in positive and negative ways,
and together they form this.
Ecosystem
Thirteenth level. Consists of all the living things in a particular area together with the
abiotic, or nonliving, parts of that environment.
Biosphere
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.
, Emergent Properties
Characteristics of a system that are not present in any of its component parts.
Biology
The scientific study of life and is the branch of science that studies living organisms and
the way organisms interact with their environments.
Homeostasis
The ability or tendency of organisms and cells to maintain stable internal conditions.
Nutrient
Any matter an organism needs but cannot make for itself.
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.
Growth
QUESTIONS AND ANSWERS LATEST UPDATE
GUARANTEED SUCCESS
Abiotic
Non-living, may be within or made by a living organism.
Biotic
Living. Matter is considered ______ if it was ever alive at some point in time
Atom
Smallest level. The basic unit of matter. Consists of a dense nucleus surrounded by
electrons.
Molecule
Second level. A chemical structure consisting of at least two atoms held together by a
chemical bond.
Macromolecule
,Third level. Biologically important molecules that are technically polymers. Example:
DNA.
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.
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.
Microorganism
Sixth level. Single-celled life form. Consists of just one cell and include unicellular
organisms such as bacteria and protists.
Tissue
Seventh level. Formed when similar cells work together to fulfill the same detailed
function.
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.
,Organ System
Ninth level. Consists of functionally related organs. Mammals have many.
Organism
Tenth Level. Individual living entities that survive and reproduce as a unit. For example,
each tree in a forest.
Population
Eleventh level. Consists of all the individuals of a species living within a specific area.
Community
Twelfth level. Populations can interact with each other in positive and negative ways,
and together they form this.
Ecosystem
Thirteenth level. Consists of all the living things in a particular area together with the
abiotic, or nonliving, parts of that environment.
Biosphere
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.
, Emergent Properties
Characteristics of a system that are not present in any of its component parts.
Biology
The scientific study of life and is the branch of science that studies living organisms and
the way organisms interact with their environments.
Homeostasis
The ability or tendency of organisms and cells to maintain stable internal conditions.
Nutrient
Any matter an organism needs but cannot make for itself.
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.
Growth
