Campbell Biology: Concepts & Connections (8th Edition)
8th Edition
ISBN: 9780321885326
Author: Jane B. Reece, Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan
Publisher: PEARSON
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Chapter 2, Problem 15TYK
This chapter explains how the emergent properties of water contribute to the suitability of the environment for life. Until fairly recently, scientists assumed that other physical requirements for life included a moderate range of temperature, pH, and atmospheric pressure. That view has changed with the discovery of organisms known as extremophiles, which have been found flourishing in hot, acidic sulfur springs and around hydrothermal vents deep in the ocean. What does the existence of life in such environments say about the possibility of life on other planets?
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Chapter 2 Solutions
Campbell Biology: Concepts & Connections (8th Edition)
Ch. 2 - Fill in the blanks in this concept map to help you...Ch. 2 - Create a concept map to organize your...Ch. 2 - Changing the _____ would change it into an atom of...Ch. 2 - A solution at pH 6 contains _____H+ than the same...Ch. 2 - Most of the unique properties of water result from...Ch. 2 - A can of cola consists mostly of sugar dissolved...Ch. 2 - Prob. 7TYKCh. 2 - In what way does the need for iodine or iron in...Ch. 2 - Use carbon-12, the most common isotope of carbon,...Ch. 2 - In terms of electron sharing between atoms,...
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- Organisms that live in fresh water are almost always hypertonic to their environment .In what way is this a serious problem? How could some organisms cope with this problem ?arrow_forwarda. Is there a microbe that could grow on a medium that contains onlythe following compounds dissolved in water: CaCO3, MgNO3,FeCl2, ZnSO4, and glucose? Defend your answer.b. A useful mnemonic device for keeping track of major elementsrequired by most organisms is: C HOPKINS Ca Fe, Na ClMgood. Read aloud, it becomes “See Hopkin’s Cafe, NaCl (salt)M good!” What does each letter stand for?arrow_forwardWater is important to all living things. Water activity is a measure of the water that is available to an organism. Water has a water activity of 1. Can you explain why jelly which is moist and semi-fluid would have a low water activity similar to something dry like cereal? (Why can’t microbes grow in this?)arrow_forward
- Describe what happens to a non-halophile bacteria in food when the water activity is changed from 0.9 to 0.88 based on the effects of low water activity. " Describe how the relationship between temperature and relative humidity influence or hinders microbial growth in spicesarrow_forwardPhospholipids will spontaneously form bubbles of bi-layer when put into water. Why do they do this? Why is this shape particularly energetically favorable?arrow_forward14C-labeled cellulose is added to a vial containing some anoxic freshwater lake sediments and sealed under anoxic conditions. A few hours later, 14CH4 appears in the vial. Discuss what has happened to yield such a resultarrow_forward
- Biochemical oxygen demand (BOD) is a measure of the: Question 4 options: A) number of bacteria present in a water sample B) amount of oxygen present in a water sample C) amount of organic matter present in a water sample D) amount of undissolved solid matter present in a water samplearrow_forwardAn H+ ion is smaller than an H2O molecule, and a glycerol molecule, a three-carbon alcohol, is much larger. Both readily dissolve in H2O. Why do aquaporins fail to transport H+ whereas some can transport glycerol?arrow_forward8. Predict which of the following organisms will have the highest percentage of unsaturated phospholipids in their membranes. A) Antarctic fish B) Desert snake C) Humans living in a temperate forest D) Thermophilic bacterium that lives in hot springs near 100°C Answer: Explanation:arrow_forward
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