WGU D849 Exam Questions and Correct Answers 100% Verified Graded A+
biology - The scientific study of life. Branches include anatomy, biochemistry, ecology,
evolution, genetics, immunology, and physiology.
cell - This is the smallest fundamental unit of structure and function in life.
biotic - This is an adjective that describes living organisms or their remains.
abiotic - This is an adjective that describes nonliving materials in the environment, such as
sunlight, rain, gases in the air, rocks, and chemicals in the soil.
atom - This is the basic unit of matter that cannot be further broken down without losing
its unique properties. Consists of a dense nucleus surrounded by a cloud of electrons.
molecule - Two or more atoms held together by a chemical bond.
macromolecules - These are large and complex molecules formed by combining smaller
subunits to produce a larger unit consisting of many atoms with new properties.
biological macromolecules - Special large macromolecules produced by living organisms
that contain carbon atoms covalently bonded to hydrogen atoms.
,types of biological macromolecules - There are four main types: carbohydrates, nucleic
acids, lipids, and proteins.
organelles - Specialized structures within a cell, formed when a specific set of molecules
bond, creating a subunit that has a specific function.
tissues - These are a group of similar cells carrying out the same detailed function with an
organism.
organs - This is a collection of tissues grouped together based on a common general
function.
organ system - An integrated collection of organs in the body that work together to
perform a vital function.
organism - An individual living entity that survives and reproduces as a unit.
population - All the individuals of the same species that occupy the same area and are
likely to breed with one another.
community - all of the populations interacting with each other within a specified area.
ecosystem - all the living (biotic) things in a particular area together with the abiotic
(nonliving) materials and conditions in that area.
, biomes - Patterns of distribution of ecosystems across the globe, where similar
environmental conditions lead to similar animal and plant adaptations.
biosphere - All areas on, within, and around the planet Earth that are capable of
supporting life.
proton - This is a positively charged subatomic particle that is contained in the nucleus
and has a mass of approximately one atomic mass unit.
neutron - This is a subatomic particle with a neutral charge that is contained in the nucleus
and has a mass of approximately one atomic mass unit.
electron - This is a negatively charged subatomic particle that occupies shells surrounding
the nucleus and has a mass that is so small it is considered to be zero.
covalent bonds - Represent the sharing of the electrons (negatively charged subatomic
particles between atoms).
ionic bonds - Attractive force generated by the interactions between ions of opposite
charges.
hydrogen bonds - Interaction between a partially positive hydrogen atom and a partially
negative atom with an unshared pair of electrons.
biology - The scientific study of life. Branches include anatomy, biochemistry, ecology,
evolution, genetics, immunology, and physiology.
cell - This is the smallest fundamental unit of structure and function in life.
biotic - This is an adjective that describes living organisms or their remains.
abiotic - This is an adjective that describes nonliving materials in the environment, such as
sunlight, rain, gases in the air, rocks, and chemicals in the soil.
atom - This is the basic unit of matter that cannot be further broken down without losing
its unique properties. Consists of a dense nucleus surrounded by a cloud of electrons.
molecule - Two or more atoms held together by a chemical bond.
macromolecules - These are large and complex molecules formed by combining smaller
subunits to produce a larger unit consisting of many atoms with new properties.
biological macromolecules - Special large macromolecules produced by living organisms
that contain carbon atoms covalently bonded to hydrogen atoms.
,types of biological macromolecules - There are four main types: carbohydrates, nucleic
acids, lipids, and proteins.
organelles - Specialized structures within a cell, formed when a specific set of molecules
bond, creating a subunit that has a specific function.
tissues - These are a group of similar cells carrying out the same detailed function with an
organism.
organs - This is a collection of tissues grouped together based on a common general
function.
organ system - An integrated collection of organs in the body that work together to
perform a vital function.
organism - An individual living entity that survives and reproduces as a unit.
population - All the individuals of the same species that occupy the same area and are
likely to breed with one another.
community - all of the populations interacting with each other within a specified area.
ecosystem - all the living (biotic) things in a particular area together with the abiotic
(nonliving) materials and conditions in that area.
, biomes - Patterns of distribution of ecosystems across the globe, where similar
environmental conditions lead to similar animal and plant adaptations.
biosphere - All areas on, within, and around the planet Earth that are capable of
supporting life.
proton - This is a positively charged subatomic particle that is contained in the nucleus
and has a mass of approximately one atomic mass unit.
neutron - This is a subatomic particle with a neutral charge that is contained in the nucleus
and has a mass of approximately one atomic mass unit.
electron - This is a negatively charged subatomic particle that occupies shells surrounding
the nucleus and has a mass that is so small it is considered to be zero.
covalent bonds - Represent the sharing of the electrons (negatively charged subatomic
particles between atoms).
ionic bonds - Attractive force generated by the interactions between ions of opposite
charges.
hydrogen bonds - Interaction between a partially positive hydrogen atom and a partially
negative atom with an unshared pair of electrons.
