SCI 135 - First Exam Spring 2012


Links in each number connect to the pertinent sections of the online book.





On the line to the left, place the letter of the choice that best  answers the question.

Three Points Each.                  NOTE:  "e" answers are never the correct answer.



                        1.    The “units” of molecular clocks are

_______                    a.  Radioactive half-lives                                  b.  Point mutations

                                    c.  Multiple bonds                                        d.  Fossil types

                                                            e.  Teensy-weensy


                        2.   The polarity of a molecule produces

_______                    a.  Ionic bonds                                    b.  Magnetic bonds

                                    c.  Covalent bonds                           d.  Hydrogen bonds

                                                          e.  Um, Poland?


                        3.   If I rerun your experiment, I should

_______                    a.  Get similar results                       b.  Make the same conclusion

   c.  Use a different variable                d.   Do all of these

   e.  Also get a date with your significant other


4.   Which thing is a classification scientist not allowed to just do?

_______                    a.  Name a new species

             b.  Change a group’s existing name

   c.  Use the same word twice in a species name

   d.  Change a group’s accepted classification level

   e.  Make all of their Facebook friends choose a favorite slime mold



                        5.    For most academic research, the peers of peer review work

_______                    a.  In a nearby lab                                         b.  At another school

                                 c.  In the same lab                                         d.   For a scientific journal

                                                   e.  To look better than everybody else


6.   Convergent evolution can easily produce

   a.  Analogous structures that are not homologous

   b.  Homologous structures that are not analogous

_______                    c.  Several species appearing in the same location

             d.  Several species that used to be in the same location

   e.  Evolution that converges




7.   Which scientific issue is most connected to postmodernism?

_______                    a.  Placebo effect                                          b.  Peer review

    c.  Using computer simulations                       d.  Experimenter bias

             e.  Um, this month’s issue-?





8.   Between single-celled and multi-celled is

_______                    a.  Single-celled colonial             b.  Tissue-based                  c.  Plants

                                 d.  Prokaryote                          e.  That evil place called No-Cell’s-Land




                        9.   Using many subjects in an experiment

_______                    a.  Isn’t necessary                             b.  Reduces the impact of chance

                                 c.  Gives more variables                    d.  Is only needed in controls

                                                e.  Will increase your insurance costs




10.    Natural reproductive behavior is a critical part of

_______                    a.  Gene dominance                                     b.  Gene recessiveness

                                 c.  Defining a species                                   d.  Any field study

                        e.  Becoming a pop star




11.  Which species name follows the proper rules?

_______                    a.  Newtus gingrichius                     b.  Mittus Romneus

   c.  ricardum santorum                     d.  ronnus Paulus

                                     e.  So they don’t belong to our species - ?




                        12.   A free radical is very chemically active because

_______                    a.  It easily ionizes              

    b.  It has too many neutrons

                                 c.  Its outer electron shell isn’t full

                                 d.  It’s breaking apart

                                 e.  It has a very poor self-image




Answer any eight of the following questions for 4 Points Each.

Note:  if you answer more than eight, only the first eight  will be corrected.
You can get partial credit on these answers.


1.       In an experiment, what are artifacts?





2.    What do HOX genes do?




 3.  Put the following groups in order from the largest to the smallest:  Class, Family, Genus, Kingdom, Order, Phylum, Species, Suborder, Superfamily.

1 4 7
2 5 8
3 6 9

4.    The two basic types of experimental models -






5.   Give two different reasons why scientists prefer quantitative data over quantitative data?





 6.   What are the two “blind” levels of a double-blind study?





7.   What’s the biological definition of  metabolism?




8.   What are two different general situations that would pretty much force a researcher to be doing field tests?





9.   What are the three basic levels, in order, of a food chain?






10.   What is the null hypothesis?





11.  What are two different types of features whose homologies are compared to show relatedness?





12.  The two different types of indirect observations.





13.  In a typical food chain, what ultimately happens to the





14.   Redi ran two different control tests for his famous maggot experiment.  Describe the control tests.





15.  Put each part of this phase in “regular” modern language: ontogeny recapitulates phylogeny.






16.  Carbon dating only works for things up to about 50,000 years old.  Why won’t it work for older specimens?








Answer any four of the following questions for Eight Points Each.

Note:  if you answer more than four, only the first four will be corrected.

You can get partial credit on these answers.


1.     What are four basic features that all living things are supposed to have?











2.   Using the numbers of bonds as a guide, fill in the symbols for either Carbon, Hydrogen, Nitrogen, or  Oxygen.


Not able to reproduce the original figure of boxes connected by single or double lines.

3.    For viruses -


2 Features they have that are also found in all living things -






2 Features all living things should have that viruses do NOT have -





4.   Put these in order so that each later level contains the earlier ones:  Community, Ecosystems, Individuals, Populations.







5.   For four of the six basic Kingdoms of Life, give the name of the Kingdom and enough features to clearly set that Kingdom's members apart from those of the other five.













6.   Two different processes that take some energy from the environment to make chemical bond energy in fuel molecules -

Type of environmental energy used by each named process -









7.    Chlorine


Atomic Weight 35

Atomic Number 17

Column 7

How many


How many


How many


(Uncharged form)


ion form?

8.   Give the following for sexual reproduction -






compared to asexual




compared to asexual





Link to Answer Key




Answer as many as you are able.  Wrong answers will not result in points being lost from the main exam.   You can get partial credit on these answers.



Where in the world is chemosynthesis driving the food chains?  Three Points.



What is ATP?  The molecule, not the auto product.  Three Points.



What makes a species colonial?  Three Points.




Under the old ideas, where did people think maggots came from?  Three Points.




Aluminum was found in brain tissue of Alheimer’s patients.  How did it get there?  Three Points.



What happens at the “top level” of a triple-blind test?   Three Points.



The Ancient Greeks used a “natural Kingdom” that stopped being considered a classification Kingdom later.  What was it?  Three Points.



Why are species names supposed to be in italics?  Three Points.




In the introductory six-Kingdom system, what’s the newest Kingdom?  Three Points.



What important function is performed by neutrons?  Three Points.




Why does becoming an ion often make a chemical more stable?  Three Points.




SCI 135 

Michael McDarby





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