SAMPLE MULTIPLE CHOICE QUESTIONS

1. Body temperature regulation in humans is an example of a homeostatic process. If the body temperature falls below the normal value, various mechanisms (such as shivering) would be used to increase body temperature towards the normal value. This is an example of:
A. negative feedback
B. feedforward
C. facilitation
D. positive feedback
E. peristalsis

2. Delivery of oxygen to the tissues in insects is achieved through a respiratory system consisting of:
A. malpighian tubes
B. air sacs
C. lungs
D. tracheal tubes
E. gills

3. Gas exchange in the mammalian lung occurs in the:
A. trachea
B. left bronchus
C. right bronchus
D. alveoli
E. bronchioles

4. An organism that makes its own food from inorganic molecules, water and energy is referred to as a(n):
A. detritivore
B. herbivore
C. omnivore
D. autotroph
E. heterotroph

5. A 2-carbon acetyl group is an example of a molecular building block that serves as the raw material for synthesis of other compounds needed by the body. Animals (including ourselves) get this 2-carbon acetyl group from:
A. hydrolysis of ATP
B. protein metabolism
C. carbohydrate or fat metabolism
D. photosynthesis
E. amino acid synthesis