Fourth Edition Chapter 1 with comprehensive Questions and
Answers
Biology✔️✔️the scientific study of life
What is the fundamental property of ecosystems?✔️✔️interactions between the (living and
nonliving)things in them
Life's hierarchy of organization✔️✔️Biosphere > Ecosystem > Community > Population >
Organism > Organ System > Organ > Tissue > Cell > Organelle > Molecule
Ecosystem✔️✔️all the organisms living in a particular area, as well as all the nonliving, physical
components of the environment that affect the organisms (air, soil, water, sunlight, etc).
Community✔️✔️a group of all the organisms living together and potentially interacting in a
particular area
Population✔️✔️a group of organisms of the same species living in the same area at the same time,
and which are capable of interbreeding.
Organism✔️✔️one individual living thing
Organ System✔️✔️a group of organs working together to perform vital body functions
Organ✔️✔️a collection of tissues that carry out a specialized function of the body
Tissue✔️✔️a group of similar cells that perform the same function.