Biology Ii -- Chapter 32 Study Module Study Guide Rated A+

When a jogger starts to run, the rate at which his muscles produce CO2 rises sharply. The CO2 in his blood rises only slightly before he starts to breathe faster and his heart starts beating stronger. Soon his increased rate of CO2 production is balanced by an increased rate of CO2 removal. This would be an example of __________ feedback because the jogger's circulatory and respiratory systems are __________. negative; restoring the CO2 concentration to a set point positive; improving the operating conditions in the jogger's body positive; decreasing the CO2 concentration positive; restoring the CO2 concentration to a set point negative; acting in opposition to one another {Ans: negative; restoring the CO2 concentration to a set point}Which of the following would be least likely to be true of an animal that is a regulator? It can live in a variable climate because of its homeostatic mechanisms. It may have a larger geographic range than a conformer. It may acclimatize to winter by increasing the thickness of its insulating coat. It has lower energy requirements than a conformer of similar size. It may use behavioral as well as physiological mechanisms for responding to changing conditions. {Ans: It has