Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 42.3, Problem 1CC
If an insect that eats plant seeds containing 100 J of energy uses 30 J of that energy for respiration and excretes 50 J in its feces, what is the insect’s net secondary production? What is its production efficiency?
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If an insect that eats plant seeds containing 100 J ofenergy uses 30 J of that energy for respiration andexcretes 50 J in its feces, what is the insect’s net secondary production? What is its production efficiency?
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Chapter 42 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 42.1 - Why is the transfer of energy in an ecosystem...Ch. 42.1 - WHAT IF? You are studying nitrogen cycling on the...Ch. 42.1 - MAKE CONNECTIONS Use the second law of...Ch. 42.2 - Why is only a small portion of the solar energy...Ch. 42.2 - How can ecologists experimentally determine the...Ch. 42.2 - Prob. 3CCCh. 42.3 - If an insect that eats plant seeds containing 100...Ch. 42.3 - Tobacco leaves contain nicotine, a poisonous...Ch. 42.3 - WHAT IF? Detritivores are consumers that obtain...Ch. 42.4 - Prob. 1CC
Ch. 42.4 - Prob. 2CCCh. 42.4 - Prob. 3CCCh. 42.5 - Prob. 1CCCh. 42.5 - How do bioremediation and biological augmentation...Ch. 42.5 - Prob. 3CCCh. 42 - Prob. 1TYUCh. 42 - Which of these ecosystems has the lowest net...Ch. 42 - Prob. 3TYUCh. 42 - Prob. 4TYUCh. 42 - Which of the following has the greatest effect on...Ch. 42 - Prob. 6TYUCh. 42 - Prob. 7TYUCh. 42 - Prob. 8TYUCh. 42 - INTERPRET THE DATA Draw a simplified global water...Ch. 42 - SCIENTIFIC INQUIRY Using two neighboring ponds in...Ch. 42 - Prob. 11TYUCh. 42 - FOCUS ON ENERGY AND MATIER Decomposition typically...Ch. 42 - Prob. 13TYU
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- Why does a competitive inhibitor not change Vmax?arrow_forwardFirefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation is an ATP-requiring reaction, firefly luciferase can be used to test for the presence of ATP. In this way, luciferase can test for the presence of life. The coupled reactions are luciferin+O2 ⇌ oxyluciferin+light ATP ⇌ AMP+PPi, ΔGo=−31.6 kJ/mol If the overall ΔGo of the coupled reaction is -8.70 kJ/mol, what is the equilibrium constant, K, of the first reaction at 27oC?arrow_forwardAccording to the chart, what percentage of US energy is produced by all of the nonrenewable sources, combined?arrow_forward
- Air temperature has a clear influence on the metabolic rate of eastern skunk cabbage (Symplocarpus foetidus). Draw a graph of this relationship with temperature.arrow_forwardWhat are the two evolutionary pathways developed to maintain thermoregulationarrow_forwardWhy is egg buoyancy an indicator of egg freshness? Explain in terms of the chemical/biochemical reactions that occur during storage.arrow_forward
- Suppose you are measuring the metabolic rate of a young,growing cow by using the material-balance method. Whatprocedures could you use to take account of the cow’s growth, sothat you measure a correct metabolic rate?arrow_forwardSuppose an environment in which vegetation respiration accounts for 10% of GPP and the energy in decaying vegetation, which is not used by herbivores, accounts for half of GPP. What proportion of the vegetation is consumed by herbivores?arrow_forwardDiscuss the concept of apparent free space. What role does apparent free space play in the uptake of nutrient ions?arrow_forward
- Ecologyarrow_forwardIn ecological systems, a rough rule of thumb is that when energyis transferred from plants to plant-eaters or from preyto predator, the efficiency is only about 10% (p. 72). Muchof this inefficiency is a consequence of the second law ofthermodynamics. Another way to think of this is that eating 1calorie of material from an animal is the ecological equivalentof eating 10 calories of plant material.Humans are considered omnivores because we can eat bothplants and animals. Our food choices have significant ecologicalimpacts. With this in mind, calculate the ecologicalenergy requirements for four different diets, each of whichprovides a total of 2000 dietary calories per day. Describe some challenges of providing food for thegrowing human population, especially as people in manypoorer nations develop a taste for an American-style dietrich in animal protein and fat.arrow_forwardIn ecological systems, a rough rule of thumb is that when energyis transferred from plants to plant-eaters or from preyto predator, the efficiency is only about 10% (p. 72). Muchof this inefficiency is a consequence of the second law ofthermodynamics. Another way to think of this is that eating 1calorie of material from an animal is the ecological equivalentof eating 10 calories of plant material.Humans are considered omnivores because we can eat bothplants and animals. Our food choices have significant ecologicalimpacts. With this in mind, calculate the ecologicalenergy requirements for four different diets, each of whichprovides a total of 2000 dietary calories per day. How many ecologically equivalent calories would it taketo support you for a year, for each of the four diets listed?arrow_forward
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