Bacteria have an enormous ability to adapt to new conditions. Which two of the following are they main factors behind this phenomenon? New mutations occur continuously with very high frequency in the genome of bacteria Bacteria generally have small genomes Bacteria have a short generation time The rate of DNA synthesis is very high in bacteria Presence of a selection pressure

Bacteria have an enormous ability to adapt to new conditions. Which two of the following are they main factors behind this phenomenon? New mutations occur continuously with very high frequency in the genome of bacteria Bacteria generally have small genomes Bacteria have a short generation time The rate of DNA synthesis is very high in bacteria Presence of a selection pressure

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter14: Dna Structure And Function

Section: Chapter Questions

Problem 6RQ: Bacterial transformation is a major concern in many medical settings. Why might health care...

See similar textbooks

Similar questions

New alleles in bacteria can arise by All of the answers are correct. conjugation transduction transformation mutation
The Kishony performed a simple but elegant experiment using a “mega-plate.” Which of the following is a fair conclusion that can be drawn from this study? The majority of antibiotic resistance occurs via horizontal gene transfer (HGT) between Actinobacteria Sensitive bacteria may acquire resistance to high concentrations of the antibiotic through many mutations Bacteria will gradually lose resistance to an antibiotic if you plate them on a large enough plate Bacteria will migrate via chemotaxis away from recombinant phage used in phage therapy
Antibiotics such as tetracycline, streptomycin, and bacitracin are small organic molecules that are synthesized by particular species of bacteria. Microbiologists have hypothesized that the reason why certain bacteria make antibiotics is to kill other species that occupy the same environment. Bacteria that produce an antibiotic may be able to kill competing species. Eliminating competitors provides more resources for the antibiotic-producing bacteria. In addition, bacteria that have the genes necessary for antibiotic biosynthesis contain genes that confer resistance to the same antibiotic. For example, tetracycline is made by the soil bacterium Streptomyces aureofaciens. Besides the genes that are needed to make tetracycline, S. aureofaciens also has genes that confer tetracycline resistance; otherwise, it would kill itself when it makes tetracycline. In recent years, however, many other species of bacteria that do not synthesize tetracycline have acquired the genes that confer…
A mutation occurs in a single bacterium that causes it to produce a new enzyme. This enzyme helps the bacterium process nutrients more efficiently, increasing the bacterium's odds of survival. Every 30 minutes, the bacteria in the colony divide, passing their genes on to their offspring. Some bacteria survive, while others do not. Because resources are limited, the colony has a steady population of 114 bacteria. The bacterial colony is shown below at three different time intervals. The picture would be here: Assume that the survival trend shown in the diagram continues. At 3.0 hours, the mutant bacteria will make up _____ percent of the entire colony.
A mutation that provides a bacterium with resistance to an antibiotic will be beneficial in all environments. True False
Fill-in the blanks in the figure below: conjugation genetic variation antibiotic resistance DNA replication binary fission genetic recombination antibiotics mutations (9) may be acquired from other cells through combines DNA from different cells, resulting in Serious bacterial infections are treated with may not kill bacteria with genes for may result from contribute to contributes to is passed from parent to offspring through are mistakes that usually occur during kill sensitive bacteria or interfere with occurs during propagates through a growing bacterial population via
Part A: Which of the following is not a reason that microbes benefit from horizontal gene transfer? cells can acquire useful traits quickly. all new types of DNA are good. genetic diversity is ehanced. All examples are reasons that microbes benefit. Part B:Transposable elements can do all of the following except move from one position to another in a chromosome. cause disruption in genes in which they insert. move from one cell to another. copy themselves, and the copy can insert somewhere else.
Paragraph Drawing The previous scenario is a greatly-simplified demonstration of how antibiotic resistance is selected for in bacteria. It assumes bacterial cells are either totally resistant (BR+, red cells) or completely susceptible (BRo, yellow). In reality, just like people differ in height, with many different heights possible, bacteria in a population can differ along a whole spectrum of resistance. Drag and Drop these labels on to the graph. One label will not be used Least Resistant Use of Use of brincomycin selects AGAINST brincomycin selects FOR these cells these cells Spectrum of Resistance Number of cells Most Resistant Notes Comments 33°F
. When a virus mistakenly picks up a segment of host bacterial DNA, packages it into a viral particle, then transfers it to a new bacterial host cell, this transfer of DNA is properly called: transduction transformation conjugation transversion transition
Which of the following has an impact on the rate at which mutations occur in cells? (Choose All That Apply) the magnitude of an environmental change the number of times DNA is replicated the size of the genome of an organism the frequency of cell division
A mutation occurs in a single bacterium that causes it to produce a new enzyme. This enzyme helps the bacterium process nutrients more efficiently, increasing the bacterium's odds of survival. Every 30 minutes, the bacteria in the colony divide, passing their genes on to their offspring. Some bacteria survive, while others do not. Because resources are limited, the colony has a steady population of 114 bacteria. The bacterial colony is shown below at three different time intervals. Assume that the survival trend shown in the diagram continues. At 3.0 hours, the mutant bacteria will make up percent of the entire colony.
A mutation occurs in a single bacterium that causes it to produce a new enzyme. This enzyme helps the bacterium process nutrients more efficiently, increasing the bacterium's odds of survival. Every 30 minutes, the bacteria in the colony divide, passing their genes on to their offspring. Some bacteria survive, while others do not. Because resources are limited, the colony has a steady population of 114 bacteria. The bacterial colony is shown below at three different time intervals. Assume that the survival trend shown in the diagram continues. At 3.0 hours, the mutant bacteria will make up how many percent of the entire colony?