Integrated Science
7th Edition
ISBN: 9780077862602
Author: Tillery, Bill W.
Publisher: Mcgraw-hill,
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Chapter 22, Problem 2PEA
To determine
The number of times a streptococcus pyrogenes is bigger than a virus.
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Suppose you have a culture of bacteria, where the density of each bacterium is 2.0 g/cm³. a. If each bacterium is 5µm × 5µm × 20µm in size, find the number of bacteria if their total mass is 30 grams. Recall that 1µm = 10−6 meters. b. Suppose that you learn that the sizes of bacteria range from 4µm × 5µm × 15µmto5µm × 6µm × 25µm. What is the range of the possible number of bacteria making up the total mass of 30 grams?
The rhinovirus which causes the common cold has a diameter of 30 nm. How many virus particles can line up side by side on a line that is 1 inch long?
(a) What is the order of magnitude of the number of micro organisms in the human intestinal tract? A typical bacterial length scale is 10-6 m. Estimate the intestinal volume and assume 1% of it is occupied by bacteria. (b) Does the number of bacteria suggest whether the bacteria are beneficial, dangerous, or neutral for the human body? What functions could they serve?
Chapter 22 Solutions
Integrated Science
Ch. 22.1 - The three main kinds of living things. Bacteria,...Ch. 22.1 - Which is commonly used as a source of information...Ch. 22.2 - Prob. 3SCCh. 22.2 - Which of the following kingdoms contain members...Ch. 22.2 - Prob. 5SCCh. 22.3 - Prob. 6SCCh. 22.4 - Prob. 7SCCh. 22.5 - Some of the oldest fossils are about how many...Ch. 22.5 - Prob. 9SCCh. 22.5 - Prob. 10SC
Ch. 22.5 - Prob. 11SCCh. 22.5 - Prob. 12SCCh. 22.6 - In the evolution of humans, the fossil evidence...Ch. 22.6 - Prob. 14SCCh. 22.6 - Prob. 15SCCh. 22 - How do the domains Bacteria and Archaea differ?Ch. 22 - Prob. 2CQCh. 22 - Prob. 3CQCh. 22 - Prob. 4CQCh. 22 - List two characteristics typical for each of the...Ch. 22 - Prob. 6CQCh. 22 - Develop a phylogeny for motor vehicles and draw a...Ch. 22 - Prob. 8CQCh. 22 - What major event marked the end of the Paleozoic...Ch. 22 - Describe how the principles of superposition,...Ch. 22 - Prob. 11CQCh. 22 - Prob. 12CQCh. 22 - What are some of the major steps thought to have...Ch. 22 - Prob. 15CQCh. 22 - Prob. 1PEACh. 22 - Prob. 2PEACh. 22 - Prob. 3PEACh. 22 - Prob. 4PEACh. 22 - Prob. 1PEBCh. 22 - Prob. 2PEBCh. 22 - Prob. 3PEBCh. 22 - Prob. 4PEB
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