The body tissue that consists largely of material located outside of cells is a. epithelial tissue. b. connective tissue. c. muscle tissue. d. nervous tissue.

Which of the following would increase the rate of heat exchange between an animal and its environment? a. feathers or fur b. vasoconstriction c. wind blowing across the body surface d.countercurrent heat exchanger

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. a. elephant; mouse b. elephant; human c. mouse; snake d. penguin; mouse

Compared with a smaller cell, a larger cell of the same shape has a. less surface area. b. less surface area per unit of volume. c. the same surface-area-to-volume ratio. d. a smaller cytoplasm-to-nucleus ratio.

An animal's inputs of energy and materials would exceed its outputs a. if the animal is an endotherm, which must always take in more energy because of its high metabolic rate. b. if it is actively foraging for food. c. if it is growing and increasing its mass. d. never; due to homeostasis, these energy and material budgets always balance.

You are studying a large tropical reptile that has a high and relatively stable body temperature. How do you determine whether this animal is an endotherm or an ectotherm? a. You know from its high and stable body temperature that it must be an endotherm. b. You subject this reptile to various temperatures in the lab and find that its body temperature and metabolic rate change with the ambient temperature. You conclude that it is an ectotherm. c. You note that its environment has a high and stable temperature. Because its body temperature matches the environmental temperature, you conclude that it is an ectotherm. d. You measure the metabolic rate of the reptile, and because it is higher than that of a related species that lives in temperate forests, you conclude that this reptile is an endotherm and its relative is an ectotherm.

Which of the following animals uses the largest percentage of its energy budget for homeostatic regulation? a. marine jelly (an invertebrate) b. snake in a temperate forest c. desert insect d. desert bird

DRAW IT Draw a model of the control circuit(s) required for driving an automobile at a fairly constant speed over a hilly road. Indicate each feature that represents a sensor, stimulus, or response.