BI 173 - Second Exam - 2000


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. Contractile vacuoles are a feature commonly found in
                           a. All protozoans             b. Land protozoans             c. Marine protozoans
                           d. Fresh-water protozoans                 e. Anal-retentive protozoans


_______ 2. Myelin is a
                           a. Lipid emulsifier             b. Muscle protein                 c. Axon insulator
                           d. Neurotransmitter                 e. Different from yourelin


_______ 3. Salt glands are found primarily in
                           a. Marine fish from fresh water groups             
                           b. Inland salt lake fish
                           c. Land animals that drink salt water                 
                           d. Marine animals from land groups
                           e. Pretzel eaters


_______ 4. Animals with gills tend to have much lower metabolic rates than animals with 
                                           lungs because
                           a. Gills are less efficient than lungs 
                           b. Water holds less oxygen than air
                           c. They are more primitive 
                           d. There is no common reason
                           e. They're just lazy, floating around all day


_______5. Which systems are almost always combined in some way?
                           a. Excretion and osmoregulation                 b. Respiration and circulation
                           c. Skeletal and temperature regulation         d. Respiration and integument
                                           e. What you want and what you won't get


_______6. Oxygen debt accumulates in or on
                           a. Respiratory surfaces             b. Muscles             c. ATP
                           d. Heat-generating tissues                 e. The Molecular Savings & Loan


_______7. Lymphatic systems
                           a. Carry fluid and white blood cells       b. Surround muscles
                           c. Are secondary oxygen carriers         d. Surround central nervous systems
                                               e. Are lymphatic, very lymphatic


_______8. Histology can be defined as the study of
                           a. Anatomy                 b. Physiology                 c. Science history
                           d. Tissues                         e. All of his stuff


_______9. An animal with a tracheal system is also most likely to have a(n)
                           a. Open circulatory system                     b. Multiple heart system
                           c. Closed circulatory system                   d. Antennal gland
                                                      e. Poor self-image


_______10. Flame cells are part of which structures?
                           a. Protonephridia             b. Metanephridia             c. Nephrons
                           d. Glomeruli                                 e. Jalapeno peppers


_______11. Which involves a depolarization of the axon membrane?
                           a. Resting potential                             b. Action potential
                           c. Recovery phase                              d. All of these
                                   e. Where exactly was the pole inserted?


_______12. A unique feature (compared to other blood vessels) of veins:
                           a. Extremely thin walls                    b. Valves
                           c. Muscle layers                             d. Pick-up of carbon dioxide
                                                  e. They're kind of bluey


_______13. The idea that evolution occurs in quick "spurts," with minimal changes
                                           between, is given which term?
                           a. Cataclysmic                 b. Punctuated                 c. Ecodriven
                           d. Neodarwinian                         e. Political


_______14. The integument systems of vertebrates and invertebrates have similarities
                                           and differences. Which is true?
                           a. Both have epidermis but only vertebrates have dermis
                           b. Both have dermis but only vertebrates have epidermis
                           c. Epidermis and dermis is found in both groups
                           d. Only vertebrates integrate their skeletal system into their integument
                           e. Does it matter that I don't remember what integument is?


_______15. Sexual selection relates primarily to traits that affect
                           a. Survival and sexual success         b. Sexual success alone
                           c. Survival success alone                 d. Mate choosing in a current generation
                                                      e. Very strange internet sites


_______16. A fluid feeding animal is most likely to have a structure built like a
                           a. Net                     b. Large open horn                     c. Cup
                           d. Hypodermic needle                     e. Barstool


_______17. The term hydrostatic refers to a type of
                           a. Movement             b. Circulatory system             c. Skeletal system
                           d. Osmotic regulation                     e. Car transmission


_______18. Cuticle is a common feature of
                           a. Cutaneous respiration                    b. Invertebrate integument
                           c. Malpighian tubules                         d. Cellular movement systems
                                                      e. Interest to manicurists



SHORT ANSWER. 

Pick TEN Questions to answer in the spaces provided.
NOTE: if you answer MORE than ten, only the first ten will be corrected.
Four Points each. Partial credit is possible.


1. Define:
ANTIBODY:



 ANTIGEN:

2. Briefly describe the threshold effect.




3. What are two different "commodities" that animals commonly exchange in countercurrent systems?




4. What is the basic function of a sense receptor?




5. Explain briefly how the founder effect works.




6. List four different types of dissolved materials typically found in vertebrate blood.





7. What two things are commonly effectors?




8. Briefly explain why fresh-water animals can not be osmotic conformers.




9. What are the two different functions that can be performed by a notochord?




10. Place the following organizational levels, presented alphabetically, in order from "simplest" to "most complex:" cellular, individual, organ, organ system, protoplasmic, tissue.
1 2 3
4 5 6

11. What should be true of an animal that is not tiny (it could be several centimeters long) but uses only diffusion for respiratory exchange?




12. What are two requirements for a population that is in Hardy-Weinberg Equilibrium?




13. What two steps are common to virtually every excretory system in the early processing?




14. What is the function of a thrombocyte?




15. What is the primary advantage to a one-way, tube digestive system?




16. What is serial homology?




17. What are two different types of metabolic adjustments made for temperature regulation in ectotherms?

 

 

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.
Six Points Each. Partial credit is possible.

1. For the two basic approaches to temperature regulation in animals:

1 Advantage over other 2nd Advantage over other
ECTOTHERMS
ENDOTHERMS

2. According to ecological Neo-Darwinism, what are the three possible responses a species can have to changes in the environment?




3. For three of the main types of animal tissues:
Name - Physical or functional features that make it distinct from the others -



4. Briefly list six different functions of animal integument.




5. For the two main types of rigid skeleton:
Name 1 Advantage over the other type 2nd Advantage over the other type


6. For each of the three main animal excretion products:
Name 1 Advantage 1 Disadvantage



7. What are six different approaches used by endotherms to help them regulate temperature?




8. Name three digestive canal regions and for each, name an animal organ or structure that would be part of that particular region.



 

LINK TO ANSWER KEY

 


BONUS QUESTIONS. 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.

What exactly did Hardy and Weinberg set out to demonstrate with their rule? Four Points.




What is the likely evolutionary history of a species with and especially good DNA repair mechanism? Three Points.




Skin color in various human groups has evolved as an interaction between which two processes? Four Points.




What are the symptoms (1 point each) of inflammation, and what is actually occurring in the tissues that produces that symptom (2 points each)?




Generally life-threatening allergic reactions occur in response to allergens that have a single common feature other than that they cause allergic reactions - what is it? Four Points.



What might cause a person to have a desire to eat dirt? Three Points.




Why don't dogs and cats need vitamin C in their regular diets? Three Points.




Cells from which animal have been used to determine the processes of axons? Three Points.

 

 

 

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