Biology (MindTap Course List)
10th Edition
ISBN: 9781285423586
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 39, Problem 5TYU
Summary Introduction
Introduction: Evolution has made it possible for different animals to survive in unfavorable conditions. Different species have adapted themselves differently to survive in extreme stressful conditions. Some animals have developed special abilities while others have developed specialized body structures that help the animal to survive in adverse atmospheres.
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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.
An ectotherm (a) has a higher rate of enzyme activity than a typical endotherm (b) has a variety of homeostatic mechanisms or regulating body temperature (c) depends on sensors in the hypothalamus to regulate temperature (d) may use behavioral strategies to help adjust body temperature (e) must expend more energy on thermoregulation than an endotherm
Figure (2) below, shows the
relations between all factors
that should be at minimat
amount of body regulation
to achieve thermal
equilibrium, towards
establishing the
physiological basis of
comfort. in the same Figure,
symbol (B) represents:
Celius
20
25
700
600
130
300
100
100
00
70
AMBIENT TEMPERATUREF
100
110
Figure (2)
ORadiation
O Convection
OMetabolism
Evaporation
STUK BOOYLOSssor GAIN
Chapter 39 Solutions
Biology (MindTap Course List)
Ch. 39.1 - Compare the structure and function of the four...Ch. 39.1 - Compare the main types of epithelial tissue and...Ch. 39.1 - Compare the main types of connective tissue and...Ch. 39.1 - Contrast the three types of muscle tissue and...Ch. 39.1 - Relate the structure of the neuron to its...Ch. 39.1 - Briefly describe the organ systems of a mammal and...Ch. 39.1 - CONNECT What are the main differences in structure...Ch. 39.1 - What type of tissue lines the air sacs of the...Ch. 39.1 - What are some differences between the three types...Ch. 39.1 - What are the main functions of each of the...
Ch. 39.2 - Define homeostasis and contrast negative and...Ch. 39.2 - Prob. 1CCh. 39.3 - Prob. 8LOCh. 39.3 - Compare the costs and benefits of being an...Ch. 39.3 - Prob. 10LOCh. 39.3 - Prob. 1CCh. 39.3 - Prob. 2CCh. 39.3 - Prob. 3CCh. 39 - Know and Comprehend 1. Tissue that contains...Ch. 39 - Tissue that contracts and is striated and...Ch. 39 - Prob. 3TYUCh. 39 - Prob. 4TYUCh. 39 - Prob. 5TYUCh. 39 - Prob. 6TYUCh. 39 - Test Your Understanding Apply and Analyze 7....Ch. 39 - Prob. 8TYUCh. 39 - Prob. 9TYUCh. 39 - Test Your Understanding 10. PREDICT The...Ch. 39 - Prob. 11TYUCh. 39 - Prob. 12TYUCh. 39 - Prob. 13TYU
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- Which of the following statements is incorrect? a) Acclimatization involves genetic change. b) Adaptations emerge over many, many generations. c) Tanning is an example of acclimatization. d) Adaptation is inherited, acclimatization is notarrow_forwardWhat should happen to Body temperature ,Hydration Levels ,Blood glucose levels and Oxygen levels 30 minutes after completion of marathon? Is this an example of negative or positive feedback? Explain reasonsarrow_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
- (a) Write down an equation expressing the thermal balance between the human bodyand its environment.(b) Under what conditions is the temperature of the deep tissues of the human bodygoing to change? Discuss the physiological mechanisms which the body employs to adjustsuch an imbalance. How can the air conditioning engineer, through an appropriate manipulationof the environment, assist the body in feeling comfortable?arrow_forwardWhen 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_forwardIs Thermal Homeostasis of a Gold Fish similar to thermal homeostasis in human? If not, what is the difference?arrow_forward
- In the negative feedback system for regulation of body temperature. Identify the following. 1. Stimulus 2. Receptor 3. Control Center 4. Effector 5. Responsearrow_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_forward1) Why you heat up when you exercise? 2) Why is exercising said to “burn calories”?arrow_forward
- 37arrow_forwardwhich 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.arrow_forwardThe human body needs to maintain stable internal conditions and characteristics such as blood glucose level, calcium concentration, optimal temperature, water content, etc. This tendency to go to a state of equilibrium among variables, conditions and functions of the body is referred to as ___(1)____. In order to maintain it, systems in the body employ ____(2)_____ which dictates the increase or decrease of the level or amount of a condition or variable. For example, when the increased amount of a hormone triggers the production of a second hormone, it is called a ____(3)_____ feedback mechanism. Sometimes, the increased amount of a variable decreases or stops the production of a hormone. In this case, it is considered a ____(4)____ feedback mechanism. Two different hormones can be used to maintain homeostasis of a single variable. For example, the hormone ___(5)____ is used to store excess glucose from the blood into the liver and muscles as glycogen. The hormone…arrow_forward
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