Exam 40: Basic Principles of Animal Form and Function

A researcher is setting up an experiment to measure basal metabolic rate in prairie voles (Microtus ochrogaster-a small rodent). Which of the following would be the best set of conditions for the voles immediately before and during the measurement?

Cardiac muscle cells are both ________.

Independent of whether an organism is an endotherm or ectoderm, the least reliable indicator of an animal's metabolic rate is the amount of ________.

Organisms maintain dynamic homeostasis through behavioural and physiological mechanisms. Which of the following statements is an accurate explanation of a negative feedback mechanism used by animals to regulate body temperature?

Consider the energy budgets for a human, an elephant, a penguin, a mouse, and a snake. The ________ would have the highest total annual energy expenditure, and the ________ would have the highest energy expenditure per unit mass.

Elephants can often be observed cooling off by spraying water over their bodies with their trunks. What type of heat exchange is occurring?

Most land-dwelling invertebrates and all of the amphibians ________.

An example of a properly functioning homeostatic control system is seen when ________.