Learning Materials
Features
Discover
Chapter 27: Q1TYU (page 571)
Genetic variation in bacterial populations cannot result from
(A) transduction
(B) conjugation
(C) mutation
(D) meiosis
(A) The option 鈥渢ransduction鈥� is false.
(B) The option 鈥渃onjugation鈥� is false.
(C) The option 鈥渕utation鈥� is false.
(D) The option 鈥渕eiosis鈥� is true.
Over 30 million students worldwide already upgrade their learning with 91影视!
All the tools & learning materials you need for study success - in one app.
Get started for free
Which of the following statements is not true?
(A) Archaea and bacteria have different membrane lipids.
(B) The cell walls of archaea lack peptidoglycan.
(C) Only bacteria have histones associated with DNA.
(D) Only some archaea use CO2to oxidize H2, releasing methane.
Bacteria perform the following ecological roles. Which role typically does not involve symbiosis?
(A) skin commensalist
(B) decomposer
(C) gut mutualist
(D) pathogen
The standard error (SE), which indicates how greatly the mean would likely vary if the experiment was repeated, is calculated as:\({\rm{SE}} = \,\frac{s}{{\sqrt n }}\).
As a rough rule of thumb, if an experiment were to be repeated, the new mean typically would lie within two standard errors of the original mean (that is, within the range of\(\overline x \, \pm \,2{\rm{SE}}\)). Calculate\(\overline x \, \pm \,2{\rm{SE}}\)for each treatment, determine whether these ranges overlap, and interpret your results.
Treatment | Dose (mg/kg) | Log of number of colonies | Mean (\(\overline x \,\)) | \({x_i}\, - \,\overline x \) | Standard deviation (s) | SE |
Control | - | 9.0,9.5,9.0,8.9 | 9.1 | (-0.1), 0.4, (-0.1), (-0.2) | 0.270 | 0.135 |
Vancomycin | 1.0 | 8.5,8.4,8.2 | 8.36 | 0.14, 0.04, (-0.16) | 0.152 | 0.087 |
5.0 | 5.3,5.9,4.7 | 5.3 | 0, 0.6, (-0.6) | 0.6 | 0.346 | |
Teixobactin | 1.0 | 8.5,6.0,8.4,6.0 | 7.22 | 1.28, (-1.22), 1.18, (-1,22) | 1.14 | 0.57 |
5.0 | 3.8,4.9,5.2,4.9 | 4.7 | (-0.9), 0.2,0.5, 0.2 | 0.616 | 0.308 |
Describe two adaptations that enable prokaryotes to survive in environments too harsh for other organisms.
Photoautotrophs use
(A) light as an energy source and CO2 as a carbon source.
(B) light as an energy source and methane as a carbon source.
(C) N2 as an energy source and CO2 as a carbon source.
(D) CO2 as both an energy source and a carbon source.
What do you think about this solution?
We value your feedback to improve our textbook solutions.
Explanations 
Textbooks 
Flashcards 
91影视 AI 
Notes 
Study Plans 
Study Sets 
Find a degree 
Magazine