BIO 101: Exam 1 (Chapters 1-4) Questions
and Answers 100% Pass
Characteristics of living things. - ANS Organized, require materials and energy, maintain
homeostasis, respond to stimuli, reproduce and develop, adapt.
How is the biosphere organized? - ANS atom - molecule - organelle - cell - tissue - organ -
organ system - organism - population - community - ecosystem
How to properly write a scientific name - ANS Genus species (italicized)
Describe the scientific method - ANS Observation, hypothesis, experiment,
analysis/conclusion
cell - ANS the structural and functional unit of all living things
tissue - ANS group of cells that are similar in structure and function
Define organ - ANS tissues functioning together to preform a certain task
Define organ system - ANS several organs that cooperate in a specific function
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Define Organism - ANS An individual living thing
Define population - ANS a group of organisms of the same species who live in the same area
at the same time.
Define community - ANS A group of populations living and interacting with each other in an
area
Define ecosystem - ANS A biological community of interacting organisms and their physical
environment.
Define biosphere - ANS part of Earth in which life exists including land, water, and air or
atmosphere
Define hypothesis - ANS An educated guess
Define theory - ANS well-tested explanation that unifies a broad range of observations
What are independent and dependent variables? - ANS -Independent Variable: The
experimental factor that a researcher manipulates.
-Dependent Variable: The variable being measured, so called because it may depend on
manipulations of the independent variable.
Describe the structure of an atom - ANS Atoms consist of electrons surrounding a nucleus
that contains protons and neutrons.
Describe an ionic bond - ANS Formed when one or more electrons are transferred from one
atom to another
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