EXAM SET (questions and verified answers)
FREQUENTLY MOST TESTED QUESTIONS | already
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Domain Eukarya contains animals, plants, protists, and fungi. - answer-True
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.
What is the function of nucleic acids? - answer-To store and transmit
hereditary information.