PRACTICE EXAM—UNIT 1
1. Name the correct order of appearance on earth of the following:
a. Atmospheric oxygen, prokaryotes, land plants, eukaryotes
b. Prokaryotes, land plants, Atmospheric oxygen, eukaryotes
c. Eukaryotes, atmospheric oxygen, prokaryotes, land plants
d. Prokaryotes, Atmospheric oxygen, eukaryotes, land plants
e. Atmospheric oxygen, prokaryotes, eukaryotes, land plants
2. A theory is _____.
a. a poorly supported idea that has little backing but might be correct
b. a well-supported concept that has broad explanatory power
c. the same thing as a hypothesis
d. not correct unless it is several years old
e. a concept that, once established in the scientific literature, can be modified but never
rejected, even when new scientific methods produce data that don't fit
3. A hypothesis must be testable and falsifiable to be scientifically valid. Being testable and
falsifiable means that _____.
a. some conceivable observation or experiment could reveal whether a given hypothesis is
correct or incorrect
b. the hypothesis has been proved wrong
c. there must be several options in the hypothesis to choose from, one of which is correct
d. if the hypothesis is not correct, the experiment was a failure
4. Science itself is not capable of _____.
a. determining the physical causes for physical phenomena or explaining naturally
occurring events
b. being reproduced or falsified
c. formulating testable hypotheses in seeking natural causes for natural phenomena
d. addressing questions of ethical dilemmas
e. being an active and dynamic process
5. Taxonomy is ___.
a. A hierarchical classification of organisms.
b. A classification that reflects historical relationships.
c. A division of organisms based on similar sets of characteristics
d. a and c
e. All of the above
6. The origin of organelles for eukaryotes was proposed by the
a. Horizontal gene transfer
b. Endosymbiont theory
c. Plasmid theory
d. Greek mythology relating to the chimera
7. Internal membranes in eukaryotes were said to have developed
a. From infoldings of the ancestral prokaryotic plasma membrane
b. From the cytoskeleton of bacteria
c. From internal parasites
d. From seeds
