Animal Physiology

Fall, 1997

Bi 377, Final Exam

 

Instructions:

1) After receiving the exam, you are free to work on the answers in any classroom in Boyd Hall. 

2) You may not use any information other than what you have stored in your brain (no notes, books, etc.)

3) You have 2.5 hours to complete this examination.  Remember that  you have agreed not to discuss this examination with anyone else in the class until all have taken it.

4) Please sign below if you agree to the above policies.

GOOD LUCK!

 

Honor Statement:  I have read the above instructions and agree to them.  I promise to neither give nor receive any help on this examination.

Signed,

 

 

Please limit your answers to the space provided beneath each answer. 

¥ Feel free to use labeled diagrams (i.e. - graphs) to enhance your answers. 

¥ Write clearly and concisely.

¥ Use complete sentences unless otherwise directed.

Short Answer. (40 points total) These questions can be answered in 3-5 sentences or a labeled diagram and 2-3 sentences.

Answer 5 of the following 6 questions (@ 7 pts)

1) Describe two mechanisms which allow freeze tolerant species to survive freezing.  Give a specific example of an organism that can do this from our class discussions.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2)  Describe in several sentences how ruminants digest cellulose.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3) Draw, label and describe briefly describe the effects of pH on an affinity curve of hemoglobin for oxygen.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4)   Compare/contrast how large vs. small desert mammals thermoregulate.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5)  Outline two specific examples of how the counter-current principle increases the efficiency transfer of molecules or energy in animals.  As always, a diagram may be helpful.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6)  List several physiological responses that diving animals undergo while diving and briefly explain the benefit of each in terms of allowing these species to dive longer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Answer 1 of the following 2 questions (@ 5 pts)

1) Support or refute the following statement: the circulatory systems of all invertebrates is less efficient than that of vertebrates.

 

 

 

 

 

 

 

 

 

 

 

 

 

2) Draw and label the respiratory system of an insect. (No writing necessary)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6)  Please fill out the "Peer Evaluation Form" attached to the last page of this exam.  You may take extra time to complete this if you need it.

7) Please return the reprints that you borrowed - they are irreplaceable because I won't know which reprints are missing, thanks! :)

Essay Questions: (@20pts; 60 points total)  Answer three of the following four questions in essay format (a paragraph or two with topic sentences followed by information supporting the topic sentence). You may also use the back side of the paper.

 

1)  Circadian rhythms are thought to occur in all living organisms.  Underlying these rhythms must be a anatomical/physiological control system.  Describe the anatomy and physiology of the circadian system controlling a certain behavior (your choice) in either a) house sparrows (Passer domesticus), b) the cockroach (Leucophaea madeira), or 3) the hamster (Mesocricetus auratus).  Choose only one species to describe and provide details from previous research. Be sure to mention a few of the important researchers in the field and their findings.

2) Chemical synapses produce post-synaptic potentials (PSP's) in the post-synaptic membrane.  Describe how these PSP's are processed and information is passed on (or not).

3) Draw and label a neural cell membrane and then describe (in written form as above) how this structure allows for neuronal excitability.

4) Compare and contrast the endocrine and nervous systems.