Type:
Solution Manual
Resource:
Biology: Life on Earth with Physiology
Edition:
12th
Author(s):
Gerald Audesirk Teresa Audesirk Bruce Byers
Chapter 1 APPLYING THE CONCEPTS HINTS 1. How does the definition of a scientific theory differ from the everyday use of the term “theory” as just an idea? Why do scientists retain the term “theory” even for concepts that would generally be considered scientific facts? 2. Which of the properties of life described in this text do viruses lack? Which do they possess? How would you alter the criteria to allow viruses to meet the new criteria? Ask yourself the same questions for prions. 3. What manipulations did the experimental bacteria receive that should be duplicated in a control? 4. You’re on your own here. 5. You’re on your own here. CONSIDER THIS HINT Case Study Revisited If viruses or other pathogens are synthesized responsibly, might this help develop countermeasures against the use of these agents by bioterrorists?
Chapter 2 APPLYING THE CONCEPTS HINTS 1. Think about what properties the molecule would need to form hydrogen bonds with water and what properties it would need to interact with hydrophobic fats. Now imagine these different properties in the same molecule.
2. Think about the evaporation of water and specific heat. Now consider how high humidity influences the ability of water to evaporate and how high humidity affects evaporative cooling by sweating.
3. Water has about five times the specific heat of granite. What does this say about the energy removed from your drink as it warms ice compared to warming an equal weight of granite of the same temperature? If you research the “heat of fusion” of water, you will learn that it takes still more energy to transform water from ice to liquid water. This energy would also be absorbed from your drink, further cooling it as ice cubes melt.
CONSIDER THIS HINT Case Study Revisited How important are the safety and waste storage risks of nuclear power? How important are the pollution, sustainability, and climate change risks of burning fossil fuels? Can any of these risks be lessened? How? What are the main advantages of each technology? Wind and solar energy are viable alternatives to nuclear power and fossil fuels. What is the best strategy for increasing use of these alternatives?