Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Textbook Question
Chapter 33.5, Problem 2CC
The energy required to maintain each gram of body mass is much greater for a mouse than for an elephant. What can you conclude about
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According to Kleiber’s law, for the vast majority of animals, an animal’s metabolic rate is proportional to m 0.75, where m is the animal’s mass. When we plot the graph of the common logarithm of the mass on the horizontal axis and the common logarithm of the metabolic rate on the vertical axis, we get a straight line. Explain why the graph is a straight line. What is the slope of the line?
One food calorie = 1 X 103 calories = 1 kcal. A typical adult ingests about 2200 food calories per day. (A) show that an adult uses energy at about the same rate as a 100-W light bulb. {B) Calculate the total annual metabolic energy expenditure of the 6 X 109 people on the earth and compare it with the 4 X 1020 J per year energy used by the world economy. Assume all persons consume 2200 food calories per day, which is obviously incorrect.
Calculate the resting metabolic rate in units of kcal day-1
kg body-1 for a 60 kg nonathletic male and a 160 kg
nonathletic male.
Make a reasonable hypothesis as to why there is a
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Chapter 33 Solutions
Campbell Biology in Focus
Ch. 33.1 - An animal requires 20 amino acids to make...Ch. 33.1 - Prob. 2CCCh. 33.1 - WHAT IF? if a zoo animal eating ample food shows...Ch. 33.2 - Prob. 1CCCh. 33.2 - In what sense are nutrients from a recently...Ch. 33.2 - Prob. 3CCCh. 33.3 - How does swallowed food reach the stomach of a...Ch. 33.3 - Explain why a proton pump inhibitor, such as the...Ch. 33.3 - Prob. 3CCCh. 33.4 - Prob. 1CC
Ch. 33.4 - Prob. 2CCCh. 33.4 - Prob. 3CCCh. 33.5 - Prob. 1CCCh. 33.5 - The energy required to maintain each gram of body...Ch. 33.5 - Prob. 3CCCh. 33 - The mammalian trachea and esophagus both connect...Ch. 33 - Which organ is incorrectly paired with its...Ch. 33 - Which of the following is not a major activity of...Ch. 33 - Prob. 4TYUCh. 33 - Prob. 5TYUCh. 33 - If you were to jog 1 km a few hours after lunch,...Ch. 33 - Prob. 7TYUCh. 33 - FOCUS ON EVOLUTION The human esophagus and trachea...Ch. 33 - Prob. 9TYUCh. 33 - Prob. 10TYU
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- Table 8.2. Measurement of the Metabolic Rate of a Frog at Different Environmental Temperatures. Metabolic Rate Metabolic Rate Packed in Ice (5°C) Room Temperature (20°C) Frog #1 0.05 0.30 ml 02/ hour / gm Frog #2 0.03 0.28 Frog #3 0.04 0.25 Procedure Calculate the average metabolic rate for the three frogs at each of the two temperatures. Put a dot on the graph in Figure 8.11 for each of the average values. Draw a line between those two dots. Write the word ectotherm on the line.arrow_forwardMention and briefly explain three factors that affect the metabolic rate of humans.arrow_forwardAn average adult cheetah has a metabolic mass of 44,010 grams and a resting metabolic rate of 61.77 joules per second. Based on these data, would you characterize the cheetah as an ectotherm or endotherm? Support your answer with evidence from the graph.arrow_forward
- The image shows the electron transport chain and ATP synthesis during cellular respiration within a eukaryotic cell. The reaction shows the conversion of glucose into ATP and heat during eukaryotic cellular respiration. Which of the following is true regarding specialized cellular respiration occurring in newborns and hibernating mammals to maintain body temperature? Additional molecules of glucose are oxidized to generate the additional body heat required for human infants and hibernating mammals. The cellular efficiency of ATP synthesis increases to generate the additional body heat required for human infants and hibernating mammals. The cellular efficiency of the electron transport chain increases to generate the additional body heat required for human infants and hibernating mammals. The electron transport chain and proton gradient efficiency are maintained without ATP synthesis to generate the additional body heat required for human infants and hibernating mammals.arrow_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_forwardWhich of the following is true regarding the metabolism in animals? O Metabolism is the total chemical activity, which is the sum of all anabolic and catabolic processes. O The Anabolic Pathways serve to break down molecules while the Catabolic Pathways synthesize important chemical building blocks. Through respiration, organisms obtain oxygen, whose rate is inversely porportional with the metabolic rate. O Metabolic Rate is not influenced by an organism's body temperature. O Poikilotherm organisms do not have any effect in body temerature when their enviornment temperature changes.arrow_forward
- 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?arrow_forwardPlease construct a model to show that the digestive, respiratory, and circulatory systems work together to supply the body cells with the glucose and oxygen needed for aerobic cellular respiration. Feel free to use words, diagrams, arrows, flowcharts, etc. to get your ideas across. Make sure you include the following information: Digestion of starch into glucose and the location(s) of digestion. Absorption of glucose into the blood and the location of absorption. Blood transporting glucose from the absorption site to the tissues. Glucose entering the tissue cells from the blood. O2 entering the blood in the lungs and the specific location of entrance in the lungs. Blood transporting O2 from the lungs into the tissues. O2 enters the tissues from the blood.arrow_forwardDuring constant flight, hummingbirds expend about 2.9 kJ/hr, relying on fat oxidation as an energy source. (a) Calculate the gms of fat necessary to sustain a 20-hr nonstop flight. (b) If the birds relied on carbohydrate for this energy, how much additional weight would they have to start the flight with?arrow_forward
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