BIOLOGY 108 EXAM TWO STUDY SCRIPT
2026 DETAILED QUESTIONS SOLUTIONS
EXPERT
⩥ 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.
⩥ What are the steps used in the scientific method? Use an example to
illustrate the steps of the scientific method. Answer: a)Observations,
Question, Hypothesis, Prediction, Test, Revise hypothesis or Make
additional predictions and test them. Example: I observe that my
flashlight does not work. I question whether the batteries are dead. I
hypothesize that the dead batteries are causing my flashlight to not work
properly. I predict that changing the batteries will cause the flashlight to
work again. I test my prediction by replacing the batteries with new
ones. If the flashlight works, my hypothesis was correct. If not, perhaps
make a new hypothesis that the light bulb is dead and need replacement.
2026 DETAILED QUESTIONS SOLUTIONS
EXPERT
⩥ 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.
⩥ What are the steps used in the scientific method? Use an example to
illustrate the steps of the scientific method. Answer: a)Observations,
Question, Hypothesis, Prediction, Test, Revise hypothesis or Make
additional predictions and test them. Example: I observe that my
flashlight does not work. I question whether the batteries are dead. I
hypothesize that the dead batteries are causing my flashlight to not work
properly. I predict that changing the batteries will cause the flashlight to
work again. I test my prediction by replacing the batteries with new
ones. If the flashlight works, my hypothesis was correct. If not, perhaps
make a new hypothesis that the light bulb is dead and need replacement.
