BI 173 - Second Exam - 2003

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. Which would be most involved in breathing rate?

                            a. Thalamus & cerebellum                             b. Medulla & cerebellum
                       c. Midbrain & hypothalamus                         d. Medulla & paleocortex
                                                e. The "in" switch and the "out" switch

 

_______ 2. The larger the axon -

                            a. The more powerful the impulse                    b. The faster the impulse
                       c. The less powerful the impulse                     d. The slower the impulse
                                            e. The more it’ll cut into the profits

 

_______ 3. Antennal glands are primarily part of which function?

                        a. Excretion                 b. Sensory                 c. Digestion
                            d. Circulatory                         e. Long and wiggly

 

_______ 4. A nephron is part of a

                        a. Lung             b. Heart             c. Gill             d. Kidney            e. Car engine

 

_______5. The term vitamin includes

                       a. All coenzymes
                            b. Coenzymes that humans can’t synthesize
                            c. All coenzymes and minerals
                            d. Coenzymes that animals can’t synthesize
                            e. Anything that can be crammed into a pill

 

_______6. Virtually all animals that excrete uric acid also

                        a. Produce defensive poisons                             b. Produce sealed eggs
                        c. Are endotherms                                             d. Live in the water
                                                        e. Have other disgusting habits

 

_______7. Actual exchange of materials with tissues happens in

                        a. Arteries                     b. Veins                     c. Capillaries
                            d. All of the above                 e. At the exchange counter by the entrance

 

_______8. Which type of receptor includes those sensitive to gravity?

                        a. Hearing                 b. Equilibrium                 c. Proprioception
                        d. Chemoreceptors                 e. Plumb-bob-receptors

 

_______9. Which are most likely to be osmotic conformers?

                        a. Freshwater animals                             b. Marine animals
                        c. Land animals                                     d. All are equally likely
                                        e. Those that give in to osmotic peer pressure

 

_______10. What feature virtually always appears along with bilateral symmetry?

                       a. Endoskeleton                 b. Exoskeleton                 c. Cephalization
                            d. Metanephridia                             e. Bisymmetrical laterality

 

_______11. Which is rarely a critical function of open circulation systems?

                        a. Nutrient carrying                                b. Immunity
                        c. Waste carrying                                 d. Oxygen carrying
                                                e. Doing insurance paperwork

 

_______12. Oxygen debt would occur in

                        a. Muscles             b. Tracheal systems             c. Nervous systems
                            d. Cooling systems                 e. Only the oddest charge accounts

 

_______13. A parasite whose offspring are passed in feces would most likely live in the

                        a. Lymph system                                     b. Integument
                            c. Respiratory system                              d. Intestine
                            e. Nastiest place it could find - parasites have poor taste in decor

 

_______14. Pumps are extremely active during

                       a. An action potential only
                            b. An action potential and recovery
                            c. Recovery and a resting potential
                            d. A resting potential only
                            e. Spring thaw

 

_______15. A notochord’s two functions are in which areas?

                       a. Integumentary and sensory
                            b. Relaying nerve messages and muscular
                            c. Skeletal and embryological development
                            d. Pumping and waste removal from blood
                            e. As a question, utter confusion and absolute despair

 

_______16. In an ant colony, each ant can be thought of as equivalent to a

                            a. Gamete             b. Muscle cell             c. Respiratory unit
                       d. Brain cell                             e. Bug

 

_______17. The moving squeeze that pushes food along a digestive canal is called

                        a. Appendicular action                         b. Excretion pressure
                        c. Peristalsis                                        d. Ecdysis
                                        e. Benjamin, but Benny to its friends

 

_______18. The typical order of neuron activation is

                       a. Sensory - interneuron - motor                 b. Sensory - motor - interneuron
                            c. Motor - interneuron - sensory                 d. Motor - sensory - interneuron
                                            e. Eeneuron, meeneuron, mineuron, moe...

 

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 serial homology.

 

 

2. Briefly explain, either in general or with a specific example, the threshold effect.

 

 

3. For animals that excrete ammonia -

Found commonly
in which type of
environment?

Why that
environment?

4. What are the two major functions of the lymphatic system?

 

 

5. Which two basic senses rely exclusively on chemoreceptors?

 

 

6. What is the main advantage that a tube digestive system has over a sac system?

 

 

7. What are two different structures or specific tissues, other than epithelium, found in dermis?

 

 

8. What are the functions of the two ends of an antibody?

 

 

9. Give one example each of the two different classes of insulation used by endotherms.

 

 

10. What is the main reason why all flatworms are flat?

 

 

 

11. What are two different adaptations that maintain osmotic homeostasis in freshwater animals?

 

 

12. Show in a labeled diagram how a typical animal heat exchanger works.

 

 

 

13. What are two advantages that endoskeletons have over exoskeletons?

 

 

 

14. What are the three structures used by cells for movement?

 

 

15. What two features do respiratory surfaces have to have?

 

 

16. Vertebrate blood commonly carries two dissolved materials that are, for all metabolic purposes, chemically inactive. What are they?

 

 

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 three regions of the animal digestive canal, name the region and give one organ or structure associated with that region.

 

 

 

 

 

 

2. Virtually all advanced excretory organs follow the same processing steps. What are they, in order?

 

 

 

 

 

 

3. What are six different functions that are performed by integument?

 

 

 

 

 

 

4. Describe or define three of the five different classes of feeding found in animals. (Note - one class has subclasses - they don’t count!)

 

 

 

 

 

 

5. For the three cellular elements of blood, give the name and the basic function

 

 

 

 

 

 

6. For ectotherm / poikilotherms:

Define -

 

One advantage
over ectotherms-

 

One disadvantage
compared to
ectotherms -

7. Give three sets of differences between the nerve cords in:

INVERTEBRATES

VERTEBRATES

 

 

 

 

 

 

 

 

 

 

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.

Movie monster giant bugs couldn’t exist for a number of reasons, one being that they would be heavier than their muscles could support. Three Points each, what other reasons preclude beetles the size of Volkwagens?

 

 

Where (fairly specifically) might one find anaerobic protozoans? Three Points.

 

 

There is a correlation between a person’s ancestral skin color and what aspect of their ancestor’s environment? Three points.

 

 

What limitation of cephalopods probably allowed the rise of the vertebrates? Three Points.

 

 

What part of the human circulatory system is essentially open? Three Points.

 

 

What is it about some allergies that make them more likely to produce extremely serious reactions? Three Points.

 

 

How do cuttlefish communicate with each other? Three Points.

 

 

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