BSC 108 EXAMS SET FULL QUESTIONS AND
COMPLETE SOLUTIONS
●● The process of keeping internal conditions constant is known as
Answer: Homeostasis
●● The levels of biological organization, in order from least complex to
most complex, are: biosphere, ecosystems, communities, populations,
organisms, organ systems, organs, tissues, cells, atoms, molecules.
Answer: False
●● A new species has been discovered. Individuals of this species are
multicellular eukaryotes that obtain nutrients from decomposing organic
matter. In which domain should this species be classified?
Answer: domain Eukarya
●● Communities are more complex than populations.
Answer: true
●● What is the lowest level of structure that can perform all activities
required for life?
Answer: cells
, ●● A tentative explanation of an observation is
Answer: hypothesis
●● A collection of hypotheses that have been repeatedly tested without
rejection is called a
Answer: theory
●● The three domains of life are:
Answer: Eukarya, Archaea, Bacteria
●● What is the difference between hypothesis and theory?
Answer: A theory is much broader in scope than a hypothesis and is
generally supported by an accumulation of extensive and varied
evidence.
●● Describe one theory that unifies biology as a science.
Answer: The theory of evolution by natural selection unifies biology as a
science because it accounts for the unity and diversity of life on Earth.
This theory states that there is an overproduction of offspring and
competition for resources, and variation exists among individual
offspring. Unequal reproductive success (natural selection) among these
offspring is the mechanism of evolution.
COMPLETE SOLUTIONS
●● The process of keeping internal conditions constant is known as
Answer: Homeostasis
●● The levels of biological organization, in order from least complex to
most complex, are: biosphere, ecosystems, communities, populations,
organisms, organ systems, organs, tissues, cells, atoms, molecules.
Answer: False
●● A new species has been discovered. Individuals of this species are
multicellular eukaryotes that obtain nutrients from decomposing organic
matter. In which domain should this species be classified?
Answer: domain Eukarya
●● Communities are more complex than populations.
Answer: true
●● What is the lowest level of structure that can perform all activities
required for life?
Answer: cells
, ●● A tentative explanation of an observation is
Answer: hypothesis
●● A collection of hypotheses that have been repeatedly tested without
rejection is called a
Answer: theory
●● The three domains of life are:
Answer: Eukarya, Archaea, Bacteria
●● What is the difference between hypothesis and theory?
Answer: A theory is much broader in scope than a hypothesis and is
generally supported by an accumulation of extensive and varied
evidence.
●● Describe one theory that unifies biology as a science.
Answer: The theory of evolution by natural selection unifies biology as a
science because it accounts for the unity and diversity of life on Earth.
This theory states that there is an overproduction of offspring and
competition for resources, and variation exists among individual
offspring. Unequal reproductive success (natural selection) among these
offspring is the mechanism of evolution.
