IA MODIFIED MASTERING BIOLOGY WITH E TEX
12th Edition
ISBN: 9780136781752
Author: Urry
Publisher: PEARSON
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Chapter 40, Problem 6TYU
Summary Introduction
To explain: Whether an animal is an endotherm or an ectotherm.
Introduction:
Thermoregulation is a process where an animal maintains its internal temperature within a tolerable range. Endotherm is any animal that maintains its body temperature independent of external environment temperature. Ectotherm is also called as cold-blooded animal. Ectotherm mainly depends on environmental temperature.
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An average adult cheetah has a mass of 44,010 grams and a metabolic rate of 61.77 joules per
second. Use these data to place the cheetah on the graph. Based on these data, would you
characterize the cheetah as an endotherm or ectotherm? How do you know?
1) It is _____for aquatic vertebrates to maintain a body temperature different from their surroundings because ______.
A) easier; water is a much better insulator than air due to its greater density
B) easier; it is possible for fish to absorb heat from the surrounding water by countercurrent exchange even when the water is colder than the fish
C) harder; water is a better conductor of heat than air
D) harder; terestrial vertebrates can use countercurrent exchange to absorb heat from air that is cooler than their bodies
2) Compared to terrestrial environments, marine environments have_____."
A) greater differences in temperature between hot and cold seasons
B) smaller differences in temperature between hot and cold seasons
C) the same amount of seasonal variability in temperature
which of the following statements are true about homeostasis? Select all that apply.
a. The selective permeability of the cell membrane allows for thermoregulation.
b. Homeostasis is an organism‘s way of maintaining constant and balanced internal processes.
c. Ectotherms rely on environmental heat to maintain homeostasis.
d. Homeostasis works by a system of positive feedback.
Chapter 40 Solutions
IA MODIFIED MASTERING BIOLOGY WITH E TEX
Ch. 40.1 - What properties do all types of epithelia share?Ch. 40.1 - VISUAL SKILLS Consider the idealized animal in...Ch. 40.1 - WHAT IF? Suppose you are standing at the edge of...Ch. 40.2 - MAKE CONNECTIONS How does negative feedback in...Ch. 40.2 - If you were deciding where to put the thermostat...Ch. 40.2 - Prob. 3CCCh. 40.3 - Prob. 1CCCh. 40.3 - Flowers differ in how much sunlight they absorb....Ch. 40.3 - Prob. 3CCCh. 40.4 - If a mouse and a small lizard of the same mass...
Ch. 40.4 - Prob. 2CCCh. 40.4 - Prob. 3CCCh. 40 - Prob. 40.1CRCh. 40 - Is it accurate to define homeostasis as a constant...Ch. 40 - Given that humans thermoregulate, explain why your...Ch. 40 - Why do small animals breathe more rapidly than...Ch. 40 - Level 1: Knowledge/Comprehension 1. The body...Ch. 40 - Prob. 2TYUCh. 40 - Consider the energy budgets for a human, an...Ch. 40 - Prob. 4TYUCh. 40 - Prob. 5TYUCh. 40 - Prob. 6TYUCh. 40 - Prob. 7TYUCh. 40 - Prob. 8TYUCh. 40 - EVOLUTION CONNECTION In 1847, the German biologist...Ch. 40 - SCIENTIFIC INQUIRY Eastern tent caterpillars...Ch. 40 - SCIENCE. TECHNOLOGY. AND SOCIETY Medical...Ch. 40 - WRITE ABOUT A THEME: ENERGY AND MATTER In a short...Ch. 40 - 13. SYNTHESIZE YOUR KNOWLEDGE These macaques...
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- Some animals fall between endothermic and ectothermic. a) What is this thermoregulation category called? "_____thermy." b) Name one extinct animal with this kind of metabolism: c) Name one extant (living) animal which this kind of metabolismarrow_forwardConsider the following energy demands: basal metabolism, reproduction, thermoregulation, activity, and growth; How should the energy spent toward these demands differ between an endotherm and an ectotherm of the same size?arrow_forwardfor aquatic animals such as sharks, how do the animals maintain their body temperature when they are in warmer or colder waters? do they have a method where they can decrease or increase their body temperatures slightly such as torpor in birds?arrow_forward
- Research the behaviours of a specific ectothermic animal. How do specific behaviours allow for the animal to control its body temperature in cool and hot conditions? How do specific parts of the animal’s anatomy help with thermoregulation? Use a feedback diagram to show how this animal uses thermoregulation in one of these conditions: ectotherm in cool conditions ectotherm in hot conditions Be sure to use ⊕ and ⊝ symbols in the feedback diagram to add important details.arrow_forwardWhat effect would swimming in cool water have on body temperatureregulation? What would happen if a negative-feedback mechanismdid not return the value of a variable, such as body temperature, to itsnormal range?arrow_forwardIn terms of body temperature regulation, contrast “cold-blooded” (Ectothermic or poikilothermic) and “warm-blooded” (Endothermic or homeothermic). Identify three animals that are ectothermic and three animals that are endothermic. What is the adaptive advantage of endothermy?arrow_forward
- When you exercise, your body depletes oxygen faster. As a result, respiration and depth of breathing increases to take in more oxygen. In addition, your heart rate increases to speed up the delivery of oxygen to your muscles that are exercising. What type of homeostatic mechanism does this represent? a) Positive feedbackb) Negative feedbackc) Feedforwardarrow_forwardConsider an ectotherm and an endotherm of equal body mass. Which of the following would you expect to be true? -both animals require the same amount of energy per unit mass -the ectotherm requires more daily calories from food than the endotherm -the endotherm requires less energy per unit mass but more total energy than the ectotherm -the ectotherm requires less energy per unit mass but more total energy than the endotherm -the ectotherm could survive a longer period without food relative to the endothermarrow_forwardWhich of the following statements best summarizes the difference between ectothermic and endothermic organisms? Group of answer choices Ectotherms absorb external heat, but endotherms use metabolic heat to maintain a warm, steady body temperature Ectotherms are warm-blooded, but endotherms are cold-blooded Endotherms control their temperature, but ectotherms have no control over their temperature Endotherms are warm-blooded, but ectotherms are cold-bloodedarrow_forward
- Human body system is a powerful machine that works all the time. To maintain the system, homeostasis should function regularly. Give TWO (2) examples and discuss the factors that give effect to this selfregulating process.arrow_forwardEndothermy and Ectothermy are two strategies that organisms use to generate or maintain their internal body temperature. An ectotherm is an organism that derives very little of its body temperature internally, and relies on the environment for heat. An endotherm is an organism that maintains its own body at a metabolically favorable temperature by internal means. Question: How does temperature affect endotherms and ectotherms differently? Describe the evidence that will help you make a claim about the question: How does temperature affect endotherms and ectotherms differently?arrow_forwardWhat animal is not a homeothermic, endothermic, poikilothermic, and ectothermic? and what does this animal do to regulate its body temperature?arrow_forward
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