Midterm 3

Midterm 3 - YOUR NAME_ BISC221 MIDTERM 3 04/09/07 DR. LARRY...

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YOUR NAME__________________ TA’s NAME________________ BISC221 MIDTERM 3 04/09/07 DR. LARRY SWANSON YOUR Student ID#: _________________ DO NOT TURN THIS PAGE UNTIL INSTRUCTED READ THE QUESTIONS CAREFULLY! DON’T REPEAT THE QUESTION IN YOUR ANSWER— THIS JUST WASTES YOUR TIME! —Answer all questions. —There are 14 main questions (each worth 10 points); 140 points total. —Write clearly. illegible or ambiguous answers will not be graded. —if you need to draw a diagram, make sure it is clear and well labeled. 1
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YOUR NAME__________________ TA’s NAME________________ 1) Bioenergetics 1a) Name two uses of nutrient molecules in the body (2 points) 1b) What is a main advantage of an animal being an endotherm? (2 points) requires less energy 1c) The basal metabolic rate of the average adult human male is about 3,500- 3,800 kcal/day. True of false? (1 point) false (1600-1800) 1d) Name four ways energy or heat is lost from the animal’s body (4 points) digestion/absorption; feces; urine; cellular respiration; cellular work; biosynthesis (growth, storage, reproduction) 1e) Which animal eats a larger proportion of its body weight in food each day: a house cat or a lion? (1 point) house cat 2
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YOUR NAME__________________ TA’s NAME________________ 2) Homeostasis 2a) Explain how a typical homeostatic control system works, including its basic parts (6 points) need to include receptor, control center, & effector (2 points each (basically explain Fig. 40.11) 2b) What is the basic difference between negative and positive feedback? (4 points) negative feedback tends to minimize changes in the environment; positive feedback amplifies changes in the environment 3) Digestive system 3a) What is the main enzyme in saliva and what does it do? (2 points) amylase; hydrolyzes glucose polymers) 3b) When the esophagus goes down, it closes the esophagus: True or false? (2
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Midterm 3 - YOUR NAME_ BISC221 MIDTERM 3 04/09/07 DR. LARRY...

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