Biological Science
5th Edition
ISBN: 9780321743671
Author: Scott Freeman
Publisher: PEARSON
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Chapter 42, Problem 8TYU
Summary Introduction
To review:
The season when the frog will require more food energy. Compare and contrast the ability of frog to move, exchange gases, and food digestion at the two temperatures.
Introduction:
Hibernation refers to the state of dormancy and they hibernate as an adaptation. It is the state of inactivity and
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Students have asked these similar questions
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.
An 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.
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
difference
Chapter 42 Solutions
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- In a Bio lab you determine that the cost of transport for two fish from different species is 1 kJ/km for fish one, and 10 kJ/km for fish two. Provide an estimate of the swimming speed of each fish assuming that a) both fish have the same metabolic rate; b) fish two has a metabolic rate 10 times higher than the metabolic rate of fish one; and c) fish one has a metabolic rate that is 100 times smaller than the metabolic rate of fish two. Note that the ratio of metabolic rate to speed defines the cost of transport in units of energy/distancearrow_forwardIf Blue Whales each require 1,000kg of Krill per day to survive, and Krill have an energy density of 4,600 kJ/kg. How much of the energy contained in each kg of Krill eaten by a Blue Whale is available to the Killer Whale that feeds on a Blue Whale? (Provide an exact figure, not a percentage.)arrow_forwardThe 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_forward
- Calculate the amount of energy that will be available for the Baleen Whale after the Krill consumed 200 J of phytoplankton. The Krill used 67 J for cellular respiration and 100 J for feces. Justify your response. refer to picturearrow_forwardConsider the following graph with metabolic rate on the left y-axis (grey line) and mass-specific metabolic rate on the right y-axis (black line): Elephant 10,000 Horse 10,000 Human 1,000 1,000 Dog Rabbit 100 100 White rat 10 10 White mouse 0.1 1.0 10 100 1,000 Body Mass (kg) kcal/day kcal/kg/day (metabolic rate)arrow_forwardFor endothermic animals such as mammals and birds, environmental temperature below the lower critical limit is likely to result in which of the following outcomes? Select one: a. Metabolic rate is unchanged b. Metabolic rate decreases c. Metabolic rate increases d. Remains the same at tropical latitudes but increases in temperate latitudes.arrow_forward
- Below are the results of an experiment to examine the effect of temperature on metabolic rate in mice. Metabolic Rate in Mice at 10°C and 22°C 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 10 degrees C 22 degrees C Chamber Temperature (°C) What is the dependent variable in the experiment? What is the independent variable in this experiment? What is the relationship between temperature and metabolic rate? Metabolic rate (cal/gram/min)arrow_forwardIn which of the following would you expect the greatest increase in metabolic rate resulting from exposure to a heat lamp? Human Mouse Turtle Canaryarrow_forwardOne 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.arrow_forward
- When hunting disrupts balance in the food chain by removing all owls, there will be no predators on snakes, leading to their increase in numbers. Considering the scenario where the number of lost owls (4) is replaced by snakes, compute for energy units following the table in no. 1 (Sun + E = 6) and answer the following questions: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_forwardIf Blue Whales each require 1,000kg of Krill per day to survive, and Krill have an energy density of 4,600 kJ/kg. How much of the energy contained in each kg of krill eaten by a Crabeater Seal is available to the Killer Whale that feeds on a Ross Seal? (Provide an exact figure, not a percentage.)arrow_forward
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