BI 171  - Fourth Exam  - 2010

Each question's number is linked to the relevant part of the online book, if possible (some questions relate to multiple sections).



Multiple Choice


Place the letter of the choice that best answers the question on the line to the left. 
Two Points Each.   NOTE: "e" answers are never the correct answer.




_______ 1.    What happens in an antenna complex?

a.  Metamorphosis is controlled                            b.  Light is absorbed                    c.  Egg cells interact with sperm enzymes

         d.  Molecules separate                                                             e.  Kids worry about bumps on their heads




_______ 2.   A particular gene is deactivated in


a.   Transduction                     b.  ATP synthesis                    c.  Knockout mice                d.   Metamorphosis

                             e.  The new version of the Gene Wars video game




_______  3.    Which would be derived from mesoderm?

a.  Heart                       b.  Brain                      c.  Stomach                d.  Skin                      e.  Self esteem




_______ 4.   Reradiation generally involves "jumps" by


a.  Carbon atoms                    b.  Protons                   c.  Electrons                 d.  Glucose molecules                e.  Tiny figures on tiny screens




_______ 5.    Which begins as part of a long external plate?


a.   Gut                                b.  Bark                        c.  Brain                      d.  Root                       e.  Airport




_______ 6.    Which is true?


a.  Consumers have more species and biomass than producers                b.  Producers have more species and biomass than consumers

c.  Producers have more biomass but consumers have more species        d.  Consumers have more biomass but producers have more species

                                                            e.  I really really don=t care about any of this




_______ 7.    An epitope is part of


a.  An antibody                       b.   A receptor             c.  A signal ligand            d.  An antigen                e.   A complete healthy breakfast




_______ 8.    Auxins in stems produce


a.  Positive phototaxis                         b.  Negative chemotaxis                        c.  Negative phototaxis

d.  Positive chemotaxis                                            e.  Something involving taxis, apparently




_______ 9.   Coenzyme A is a carrier between


a.  Membrane and cytoplasm                          b.  Outer and inner membrane                    c.  Glycolysis and Krebs cycle

d.  NAD and FAD                                                                            e.  Santa and the tree




_______ 10.     Protein electrophoresis samples are placed near the positive pole.  After running, the samples farthest

                                            from where they were originally put are


a.  Larger and more negative                            b.  Larger and more positive                        c.  Smaller and more negative

d.  Smaller and more positive                                                        e.  Really much happier in their new location




_______ 11.    Polyspermy would result in


a.  Extra organelles                              b.  Single extra chromosomes                            c.  Extra zygotes

d.  Extra sets of chromosomes                                        e.  Parrot paternity suits




_______ 12.    Which would activate an enzyme?


a.  Receptor                         b.  Gene                       c.  G protein                d.  Protein kinase                   e.  The little switch in the back





_______ 13.    Ferredoxin would be found in


a.  Plants                        b.  Egg cells                 c.  Animals                  d.  Fungi                    e.  Fast food





_______ 14.  Carrying capacity is a strong factor in


a.  Gene therapy                                  b.  Water movement in plants                            c.  Oxidizers

d.  Metamorphosis                                                            e.  Truck commercials





_______ 15.   Group transfer potential is a feature of


a.  Embryonic development                                b.  Fungus reproduction                                    c.  Electrophoresis

d.  ATP chemistry                                                                    e.  Merging orchestras




_______ 16.    Early land plants needed alternation of generations because they


a.  Couldn't be tall and sexual                    b.  Had to increase carrying capacity                    c.  Were responding to auxin effects

d.  Used to be fungi                                                            e.  Had signed a long-term contract and couldn't afford to break it





_______ 17.   What are two functions specialized in particular classes of plant tissues but not specialized in animal tissues?


a.   Mitosis and meiosis                       b.  Fluid tubes and mitosis                        c.   Movement and support

d.  Fluid tubes and support                                    e.   Why would plants need tissues - they don=t cry...





_______ 18.    A genome database can be used for finding


a.  New model organisms                                b.  Unknown proteins                                c.  Homologous genes

d.  Analogous genes                                                                    e.  Dates for your genome


Short Answer.   


Pick NINE questions to answer in the spaces provided.

NOTE: if you answer MORE than nine, only the first nine will be corrected. 

Four Points each.   Partial credit is possible.



1.   In respiration systems, what are two different terminal electron acceptors?


2.   Give two different ways that steroid-based messenger molecules act differently on the target cell.




3.   Give two sets of differences between -





4.   When hydrogen atoms carry electrons, they eventually become H+ ions.  What chemically happens to the hydrogens in that step?



5.   Give the functions of two of the tissue-like zones of a fungus.



6.   For oxygen debt -

In what


of tissues?




7.   What are two ecosystem systems where C4 photosynthesis systems are found?


8.   Samples for mass spectroscopy must be volatilized.





is it


9.    Briefly describe an example of negative feedback.



10.    The embryo stage is over and the fetus stage begun when...




11.   In a food chain, what ultimately happens to most of the -

12.   What are two different examples of signal ligands?


13.    What are two different nitrogenous wastes?



14.   Two completely different uses for carotenoids:



15.   Give an example each of coevolution that involve -

16.  What two genes are commonly on plasmids when setting up artificial bacterial protein production?



Long Answer.  


Select and answer completely any four of the following questions.

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

Seven Points Each.  Partial credit is possible.

1.    Give four basic steps of glycolysis.  They don't have to be in-a-row consecutive, but they do need to be in proper order.




2.   Describe, in proper order, four things that happen between fertilization and fetal stages in animals.

3.   Briefly describe how these molecules are used purely for respiration energy -

4.   At the points labeled with the stars, attach the appropriate labels from this list

Violet.  X-Ray.  InfraRed.  Red.   Blue. Ultraviolet.


High Frequency                                                                              \                  Visible Range                         /       Low Frequency

                          *                                                                     *    /    *            *                                       *    \   *  



5.   For the two steps of photosynthesis, give the names of the steps and for each, list all of the types of energy and/or materials input and output.
First Step -



Input -

Output -

Second Step -



Input -

Output -


6.    Give the steps that repeat in the Polymerase Chain Reaction.  There is not a set number, since some steps can be seen as single or double.  Include all temperature changes.










7.   For three different types of model research organisms, give the organism (as it's commonly referred to) and give an area of basic research that they are commonly used for.



8.   Give four completely different examples of anaerobic organisms' impact on humans.






Link to Answer Key



Answer as many or as few as you wishYou can't lose points on the rest of the exam by getting these wrongPartial credit is possible.


The electron-carrying enzymes belong to what class of vitamins?  Three Points.



What tissue types' functions are based on electrical potentials?  Two Points each, wrong balances right.


Life seems to break the 2nd Law of Thermodynamics - why doesn't it?  Three Points.



Some radiation is called ionizing radiation - why, exactly?  Three Points.



A photon is equivalent to what other unit?  Three Points.



What symbionts are critical to the success of land plants (Two Points), and what do they do? (Three Points)




Why does just the sperm nucleus enter the egg cell?  Three Point.




Pollen combines what two pre-existing abilities?  Three Points.




How do two parts of the same fungus come to be genetically different?  Three Points.




What is the natural function of restriction enzymes?  Three Points.




Why might DNA fingerprinting be unreliable?  Three Points.







BI 171



Hit Counter