Animal Physiology, Spring, 2000

Bi 377, Hour Exam II

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) Please limit your answers to the space provided beneath each answer. Feel free to use labeled diagrams to enhance your answers. Write clearly and concisely.

4) You have 1.5 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 (I will let you know in class).

5) 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,

Short Answer. Choose seven out of the following eight questions. Each is worth 10 points. These questions can be answered in 3-6 sentences or a labeled diagram and 2-3 sentences.

1) Draw and label an O2 affinity curve that shows the Bohr (pH) effect.

2) Define adaptation and give an example of an "experiment" that occurred in England in the 1800's that showed that external coloration of an animal could be adaptive.

3) Describe briefly how homeostasis can be maintained either via hormonal or biochemical means.

4) Identify/define four (out of five) following in one or two sentences: (@2.5 pts)

a) Claude Bernard

b) Walter Cannon

c) Ram ventilation

d) insect tracheae

e) avian parabronchii

5) The article by Stephen J. Gould, "Of Size ands Shape" illustrated important principles seen in the respiratory and circulatory systems. Briefly describe one principle that the author illustrated.

6) a) List at least three different types of respiratory structures then list

b) differences and

c) similarities between them

7) Compare and contrast the regulation of respiration in aquatic versus terrestrial species.

8. List the four groups of respiratory pigments and at least one species or family that uses each to carry respiratory gasses.

Essay Questions: (@ 15 pts) Answer the following questions in essay format (a paragraph or two with topic sentences followed by information supporting the topic sentence). You can also use the back side of this sheet of paper. DIAGRAMS (FIGURES) ARE ALSO STRONGLY ENCOURAGED!

1) You are God. It is day 6 at the beginning of the world. Design the most efficient type of respiratory structure that you can. Be sure that important principles are included in your design.

2) You are a world famous cardiovascular physiologist and have discovered a new vertebrate species in the swamps of Malaysia. One group of scientists from the Netherlands has suggested that the circulatory system is very similar to a fish. Another group from Germany has suggested that it is more like a bird. What differences and similarities will you look for in this new species in order to determine if its circulatory system is more like a fish or a bird?