If you.compared the body heat loss of two different Arctic animals, a large" polar bear and a small snowshoe hare, which would lose all their body heat the fastest? Explain your answer with respect to differences in the overall surface area to volume ratio between the two animals.

Which of the following is not true about acclimatization? Acclimatization allows animals to compensate for changes in their environment Acclimatization improves function in a new environment Acclimatization occurs when an animal tries to reestablish a homeostatic set point Acclimatization is passed on to offspring of acclimated individuals.

Estimate your energy requirement based on your current age, weight, height, and activity level. Physical Activity (PA) Factors for EER Equations Men Women Physical Activity Sedentary 1.0 1.0 Typical daily living activities Low active 1.11 1.12 plus 3060 min moderate activity Active 1.25 1.27 plus 60 min moderate activity Very active 1.48 1.45 plus 60 min moderate activity and 60 min vigorous or 120 min moderate activity NOTE: Moderate activity is equivalent to walking at 3 to 4 mph.

When faced with a sudden drop in environmental temperature, an endothermic animal will: experience a drop in its body temperature wait to see if it goes lower increase muscle activity to generate heat add fur or fat to increase insulation

Which of the following is not a way that ectotherms can change their body temperatures? Sweating for evaporative cooling Adjusting the timing of their daily activities Seek out or avoid direct sunlight Huddle in a group.

Basal metabolic rate is a measure of ______. a. the total amount of calories you burn in 24 hours b. the amount of food energy needed to sustain basic body operations c. the amount of energy burned by skeletal muscle in a given period d. both a and b

Which of the following statements about insulin is true? Insulin acts as a transport protein, cany in g glucose across the cell membrane. Insulin facilitates the movement of inti acellular glucose transporters to the cell membrane. Insulin stimulates the breakdown of stored glycogen into glucose. Insulin stimulates the kidneys to reabsorb glucose into the bloodstream.

The hormone insulin enhances the transport of glucose (sugar) from the blood into most body cells. Its secretion is controlled by a negative-feedback system between the concentration of glucose in the blood and the insulin-secreting cells. Therefore, which of the following statements is correct? A decrease in blood glucose concentration stimulates insulin secretion, which in turn further towers blood glucose concentration. An increase in blood glucose concentration stimulates insulin secretion, which in turn lowers blood glucose concentration. A decrease in blood glucose concentration stimulates insulin secretion, which in turn increases blood glucose concentration. An increase in blood glucose concentration stimulates insulin secretion, which in turn further increases blood glucose concentration. None of the preceding is correct.