Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 47, Problem 1COQ
Summary Introduction
To determine: The differences between ectothermic and endothermic organisms and also determine differences between heterothermic and homeothermic organisms.
Introduction: The biologists classified animals on the basis of both the heat source which is used to warm their body surfaces and the particular ability of animals to maintain their body temperature. They can be categorized under ectothermic, endothermic, heterothermic, and homeothermic animals.
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Which 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-blooded
Differentiate ectothermic and endothermic organisms
Consider 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 endotherm
Chapter 47 Solutions
Biology
Ch. 47.2 - Prob. 1CSCh. 47.2 - Prob. 2CSCh. 47.3 - Can the relationship between body size and...Ch. 47.3 - What observation led to the experiments conducted...Ch. 47.3 - CoreSKILL How did the experimental linking of the...Ch. 47.3 - Prob. 3EQCh. 47.4 - Prob. 1CCCh. 47 - Prob. 1TYCh. 47 - Gluconeogenesis a. occurs when the liver...Ch. 47 - Prob. 3TY
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- Define the following terms: ectotherms, endotherms, poikilotherms, homeotherms, eurytopic, and stenotopic. Give an example for each.arrow_forwardEctotherms: 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_forwardA substance that protects against cell damage and is associated with lower risks of some types of cancer is * an embolism an antioxidant cholesterol insulin Caloric expenditure is * the number of calories a person uses for BMR and physical activity the number of calories the body uses at rest the number of calories a person take in from food and beverages a unit of energy produced by food and used by the body O O O O O Oarrow_forward
- Which of the following is a correct statement about endothermic organisms? A. Compared to ectotherms, since they cannot have their internal body temperature leave the thermoneutral zone, they are limited with regard to the types of environments they can live in. B. Endotherms do not typically use passive mechanisms for thermoregulation, such as insulation, because they utilize metabolic energy to control body temperature. C. The trait of endothermicity is a derived characteristic in mammalian animals and is not seen in other phylogenetic branches in the Metazoan Clade. D. All endotherms possess sweat glands, which allow them to conduct evaporative cooling to lower their body temperature when needed. E. None of the abovearrow_forwardE OL 7.3.1 Unit 7.3 Explore 1 pg 490-495 1. Explain -- Identify a change in your environment that might affect homeostasis. Explain using the terms stimulus, control center, set point, effectors, and imbalance in your answer. 2. Model -- Refer to the control system diagram shown in Figure 1 (pg 490) to draw a model that shows how sweating can help body temperature return to normal. You can complete this by going to Insert > Drawing > +New in the space below OR Draw your model on paper. Take a clear picture. Then insert the picture by going to Insert > Image > Upload OR Camera OR Drive) 3. Complete the statement about negative feedback loops with the following words: control center effectors receptors set point Shivering and sweating are two parts of the same negative feedback loop with temperature as the stimulus that triggers its activity. When replace with answer. In the skin and body core detect an imbalance in temperature, they said nerve impulses to the replace with answer. The…arrow_forwardCompare the costs and benefits of being an endotherm, and describe strategies endotherms use to adjust their body temperature.arrow_forward
- The cost of being endothermic is a high demand for energy (food) to support metabolic heat production. Compared with large endotherms (such as a polar bear), small endotherms (mouse) require feeding rates, partly because they have a surface area-to-volume ratio A. similar; similar B. lower; lower O C. higher; higher O D. lower; higher O E. higher; lowerarrow_forwardThermoregulation is the process by which animals maintain an internal temperature within a tolerable range. Which of the following statement is NOT TRUE about Thermoregulation ? Lütfen birini seçin: O a. Endothermic animals generate heat by metabolism O b. Ectothermic animals gain heat from external sources O c. In general, ectotherms tolerate greater variation in internal temperature, while endotherms are active at a greater range of external temperatures O d. Ectothermy is more energetically expensive than endothermyarrow_forwardExplain briefly the physiological reason for this survival rule: When left in an island with little or no freshwater, never eat solid food in large volume; eat only small portions at a time.arrow_forward
- Agree/Disagree explain why •Does adipose tissue dies as a person diets, and new cells are formed as weight is gained •John is a thin man who has more brown fat than Chris who is an overweight manarrow_forwardPredict what would happen to the metabolic rate of the mouse if you increased the temperature. Predict what would happen to the metabolic rate of the mouse if you decreased the temperature (You can make this prediction with text or with lines on your graph). Support your prediction with evidence about endotherms and ectotherms. (Hint: Think about what happens to your body when you get hot or cold.)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_forward
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