BI 171 - Fourth Exam - 2005


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.  The same environment can carry a larger population of a species capable of

                    a. Photosynthesis             b. Aerobic respiration             c. Metamorphosis
                    d. Decomposing                             e. Squeezing


_______ 2.  Which can act as electron acceptors in respiration processes?

                    a. Water and glucose                                 b. Sulfur and oxygen
                    c. Chlorophyll and enzymes                       d. Carbon dioxide and methane
                                    e. Molecules with teeny electron-deposit slots


_______  3.  Which is commonly produced during phosphorylation?

                    a. ADP         b. AMP         c. ATP        d. Glucose         e. Phosphoryl


_______  4.  What starts as a surface plate but eventually becomes an internal tube?

                    a. Digestive system                             b. Circulatory system
                    c. Breathing system                            d. Nervous system
                                                e. A cheap bumper


_______ 5.  Which is an example of negative chemotaxis?

                    a. Plant root growing downward
                    b. Male moth attracted to female moth by pheromones
                    c. Animals driven away by skunk’s smell
                    d. Cockroach scurrying out of the light
                    e. Well, I got yer "negative" part right here...


_______ 6.  Okazaki fragments are produced

                    a. From activated chlorophyll                b. On DNA, but only on one side
                    c. On DNA, on both sides                     d. On messenger RNA
                                        e. Just when you least expect them



_______ 7.  In a human, which tissue is mostly in mesoderm structures?

                    a. Nervous                 b. Meristem                 c. Skeletal muscle
                    d. Epithelial                                 e. Kleenex



_______ 8.  Which is a type of signal ligand?

                    a. NADH                     b. Chlorophyll                     c. GTP
                    d. Hormone                  e. Isn’t the weird one just the regular one rearranged-?



_______ 9.  As a species, dogs are

                    a. Parallequeous                     b. Monoecious                     c. Dioecious
                    d. Rhomboloid                                         e. Noisy



_______ 10.  In general, G proteins

                    a. Are the primary receptors                         b. Activate enzymes
                    c. Cause release of 2nd messengers               d. Travel between cells
                                        e. Were discovered before H proteins



_______ 11.  The reason that aerobic respiration is considered more efficient than anaerobic
                                respiration is that aerobic

                    a. Uses more oxygen                             b. Produces more ATP
                    c. Uses less oxygen                               d. Produces more glucose
                                                  e. Is much prettier



_______ 12.  Which would do the Calvin cycle?

                    a. Lizard         b. Grass         c. Roundworm        d. Mushroom         e. Hobbes



_______ 13.  NADH is involved in moving electrons to molecules, which makes it a(n)

                    a. Reducing agent             b. Phosphate producer            c. Enzyme
                    d. Oxidizing agent                            e. Very nice molecule



_______ 14.  A particular class of cells united through common features is a

                    a. Embryo             b. Zygote             c. Fetus            d. Tissue
                                               e. Gross thing to consider


_______ 15. Caenorhabditis elegans has contributed to many discoveries about

                    a. Photosynthesis                         b. Respiratory pathways
                    c. Homeogenes                            d. Transduction pathways
                                e. The acceptable length of genus names


_______ 16.  Which is true?

                    a. A reaction center leads into the Krebs cycle
                    b. An antennal complex leads into a reaction center
                    c. Oxaloacetate is a product of the light-independent reaction
                    d. All of these are true
                    e. I won’t miss these questions after today


_______ 17.  Across the whole Earth ecosystem, how do producers compare to consumers?

                    a. Consumer species outnumber, producers have more total mass
                    b. They are roughly equal in species numbers, but producers have more total mass
                    c. Producer species outnumber, consumers have more total mass
                    d. Roughly equal in total mass, but consumers have more species
                    e. They’ve got a new movie coming out (and we’re looking for sponsor money)


_______ 18.  Of the pathways in typical food chains

                    a. Materials and energy recycle to the beginning
                    b. Materials and energy both require new, external input at the base
                    c. Energy recycles but materials doesn’t
                    d. Materials recycle but energy doesn’t
                    e. They follow the, uh, food in, um, links


Short Answer.

Pick NINE questions to answer in the spaces provided.
: if you answer MORE than nine, only the first nine will be corrected.
Four Points each. Partial credit is possible.

1.  What are two ways that the process of prokaryote cell division is different from the process of eukaryote cell division?


2.  Growth in multicellular systems involves what two different cellular processes?


3.  Briefly explain what happens in an atom during reradiation.



4.  Ammonia is produced in cells from what specific process?



5.  What are the two main inputs to the light-dependent reaction?


6. Give the primary area of research for these model organisms:




7. An acrosome - where is it found, and what is it?



8.  Briefly explain how genetic redundancy arises during meiosis.



9. Briefly describe one of each type of polyspermy prevention -




10.  Other than DNA polymerase, what are two types of enzymes involved in DNA replication?


11.   Although we speak of electrons being carried along pathways, what are usually really moving?



12.  Give two fundamentally different uses for carotenoids.


13.  Briefly explain why cells typically spend a very long time in interphase.



14.  For oxygen debt
does it
15.  For each phase of Meiosis I, give a way that it differs from that phase in mitosis.






Long Answer.

Select and answer completely any four of the following questions.
if you answer more than four, only the first four will be corrected.
Seven Points Each. Partial credit is possible.

1.  For the differences between genders, give three sets of differences between -









2.  Give three sets of differences between (make sure you don’t give the same difference twice, just reworded) -






3.  Give the important steps of what happens to glucose during glycolysis. You do not have to track ATPs.







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.  Briefly describe four different ways that anaerobic organisms impact human beings.





6.  For the two main parts of photosynthesis reactions:


What gets Used? (Give the Materials and/or Energy)

What Gets Produced? ( Give the Materials and/or Energy)






7.  For each stage of actual mitosis, name the stages in order and for each describe one thing that happens only during that stage.







Answer as many or as few as you wish. You can't lose points on the rest of the exam by getting these wrong. Partial credit is possible.

How do funguses have sex? Three Points.


Which vitamins are used to make (2 Points each):

NAD?                                                                     FAD?

What feature determines how sensitive a tissue will be to radiation damage? Three Points.



For Three Points Each, up to four steps, give specific steps that are mirror-imaged between photosynthesis and aerobic respiration.




Recent studies have implicated what element as the limiting factor in open-ocean food chains? Three Points.


C4 photosynthesis is useful in slowing which process in plants? Three Points.


Why do fats have so many calories? Three Points.


Why do only the sperm nuclei enter the egg cell during fertilization? Three Points.


What shape are blastulas really, usually? Three Points.


What chapters did we not get to? Three Points each.





BI 171



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