Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 40, Problem 2SYK
Summary Introduction
To explain: The reason why ectotherm has the ability to tolerate wider internal temperature fluctuations and endotherms may be able to tolerate wider external temperature fluctuations.
Introduction: Endotherms are animals that mostly gain heat from the environment. For example, the majority of fishes, invertebrates, nonovarian reptiles, and amphibians. Cold-blooded organisms are referred to as ectotherms. These animals regulate the temperature of the body based on the external sources. For example, a heated rock surface or sunlight. The ectotherms include amphibians, fishes, invertebrates, and reptiles.
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Chapter 40 Solutions
Study Guide for Campbell Biology
Ch. 40 - List some advantages of a compact, complex body...Ch. 40 - Name the two types of epithelia illustrated below....Ch. 40 - Prob. 3IQCh. 40 - Prob. 4IQCh. 40 - What is positive feedback? Give an example. Are...Ch. 40 - Prob. 6IQCh. 40 - Prob. 7IQCh. 40 - Describe the following types of torpor. What...Ch. 40 - Organs are composed of layers of several different...Ch. 40 - Prob. 2SYK
Ch. 40 - Prob. 3SYKCh. 40 - Tunas, dolphins, penguins, and sharks all have a...Ch. 40 - Prob. 2TYKCh. 40 - Prob. 3TYKCh. 40 - Prob. 4TYKCh. 40 - Prob. 5TYKCh. 40 - Consider an epithelium consisting of several cell...Ch. 40 - Prob. 7TYKCh. 40 - Prob. 8TYKCh. 40 - Prob. 9TYKCh. 40 - Prob. 10TYKCh. 40 - Prob. 11TYKCh. 40 - Prob. 12TYKCh. 40 - Prob. 13TYKCh. 40 - Prob. 14TYKCh. 40 - Prob. 15TYKCh. 40 - Prob. 16TYKCh. 40 - Prob. 17TYKCh. 40 - For most terrestrial animals, the average daily...Ch. 40 - Prob. 19TYK
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- Stratified squamous epithelial cells are effectors in a feedback loop that helps maintain temperature homeostasis. Select one: a. True b. Falsearrow_forwardWhat is the trade-off of ectotherms with regard to maintaining an internal environment that doesn’t vary much? Ectotherms are larger than endotherms because they need to have a larger surface area to volume ratio in order to either increase or lower their temperature. Ectotherms usually have fur in order to conserve heat when they live in very cold environments. Ectotherms are smaller than endotherms because they need more surface area to dissipate heat relative to their insides. Ectotherms can survive in a wider variety of habitats because they are smaller and can behaviorally adapt to a wide variety of temperatures.arrow_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
- Describe what happens in an endotherm and an ectotherm when outside temperature gets cold, and what happens when it gets hot.arrow_forwardDescribe the steps in the homeostatic feedback system activated to ensure normal body temperature is maintained when exposed to a hot external temperature (e.g., 42 degrees Celsius). Give typing answer with explanation and conclusionarrow_forwardIn the negative feedback system for regulation of body temperature. Identify the following. 1. Stimulus 2. Receptor 3. Control Center 4. Effector 5. Responsearrow_forward
- a) Name an example of an ectotherm living a homeothermic life b) Explain how how they can do thisarrow_forwardDraw a negative feedback loop for maintaining homeostasis for thermoregulation where your body temperature is above the set point. In your drawing, include the stimulus, sensor, integrator, effector, and the arrows between the components to indicate how they all relate (be sure to indicate what each of these components are in your body, for example, what is your integrator). Further, answer the following two questions. First, what might be different between the response of an endothermic and an ectothermic animal in maintaining homeostasis? Second, describe what a negative feedback loop is and how it pertains to homeostasis.arrow_forwardDefine the following terms: ectotherms, endotherms, poikilotherms, homeotherms, eurytopic, and stenotopic. Give an example for each.arrow_forward
- Ectotherms: They are otherwise called wanton creatures. Fishes, creatures of land and water, reptiles are ectotherms. Endotherms - they are otherwise called warm-blooded creatures. For example, birds and vertebrates are endotherms. Impact of temperature on endotherms - When the temperature is low, endotherms produce more hotness to keep the internal heat level steady. So endotherms are not influenced by the temperature of the climate. Impact of temperature on ectotherms - The temperature of the climate influences ectotherms. At the point when the temperature is high, ectotherms grow quicker. At the point when the temperature is low, they might foster injury. Provide biological reasoning for your claim about endotherms. Consider addressing the following: -Why do you see the data you see? -What is happening at the molecular level? -What are the benefits and disadvantages of being an endotherm. -How do endotherms maintain homeostasis?arrow_forwardYou 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.arrow_forwardEndothermic animals can maintain consistent temperature conditions by generating, main- taining, and regulating their body heat. Under cold conditions, more body heat becomes lost to the environment. Endothermic ani- mals rely on different mechanisms that allow them to maintain their body heat. Which of the following mechanisms that occur in endothermic animals does not describe a mechanism by which they maintain their body heat under these types of conditions? A B с D Some endothermic animals hibernate during extreme environmental conditions, which decreases the rate of metabolic reaction and decreases heat loss. The tissues of the blood vessels of many endothermic animals can dilate and move closer to the skin, allowing for heat to move more readily into the environment. Shivering, which can occur involuntarily in most endothermic animals, produces rapid muscle contractions, which increase the rate of cellular respiration and thereby increase heat production. Layers of densely packed…arrow_forward
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