A bacterium that has an F plasmid is able to do which of the following? Group of answer choices resist antibiotics survive in very harsh environments such as hypersaline lakes grow a cell wall form conjugation tubes and pass on their DNA to other bacteria reproduce sexually B) horizontal gene transfer refers to bacteria's ability to Group of answer choices make peptidoglycan for their cell walls transfer DNA to offspring, or "daughter" cells transfer DNA only when on horizontal surfaces, such as a table top transfer pieces of DNA to other cells in the population engage in mutualisms with certain species

A bacterium that has an F plasmid is able to do which of the following? Group of answer choices resist antibiotics survive in very harsh environments such as hypersaline lakes grow a cell wall form conjugation tubes and pass on their DNA to other bacteria reproduce sexually B) horizontal gene transfer refers to bacteria's ability to Group of answer choices make peptidoglycan for their cell walls transfer DNA to offspring, or "daughter" cells transfer DNA only when on horizontal surfaces, such as a table top transfer pieces of DNA to other cells in the population engage in mutualisms with certain species

Biology: The Unity and Diversity of Life (MindTap Course List)

15th Edition

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter20: Viruses, Bacteria, And Archaea

Section: Chapter Questions

Problem 10SQ: Formation of a(n) ___ allows some soil bacteria to survive adverse conditions. a. pilus b. nucleoid...

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Because bacteria are able to replicate at high rates, they aresubjected to mistakes or mutations being made in their nucleo-tide sequence. For example, the nucleotide sequence in a genecoding for a protein might be AATTGGCCA but because ofmutation might become GGTTGGCCA. How may such a mu-tation become beneficial to the bacterium? How may it becomeharmful?
Choose the one answer that fits best. Which of the following statements regarding bacteria is NOT correct? a. During conjugation, two bacteria exchange genetic information directly via pili b. Bacterial populations have a higher mutation rate because their DNA Polymerases do not have proofreading capability c. Bacterial growth by binary fission is exponential and each division usually takes only a couple of hour or less d. Plasmids carry just a few genes and are replicated independently from the bacterial chromosome e. Cocci that are arranged in clusters/bunches are called staphylococci
The addition of DNase to a mixture of donor and recipientcells will prevent gene transfer viaa) DNA transformation.b) chromosome transfer by conjugation.c) plasmid transfer by conjugation.d) generalized transduction.
The term "Superbug" refers to? A. Certain bacteria strain that can grow in all kinds of unfavorable conditiions B. Certain bacteria strain is more toxic than all the viruses C. Certain bacteria strain that is resistant to all available antibiotics D. Certain bacteria strain that grows faster than any other strains
The presence of colonies on the bacterial plate post transformation suggests which of the following? Group of answer choices The colonies contain the transformed plasmid and are not resistant to the antibiotic The colonies contain the transformed plasmid and are resistant to the antibiotic The colonies do not contain the transformed plasmid and are not resistant to the antibiotic The colonies do not contain the transformed plasmid and are resistant to the antibiotic
Formation of a(n) ___ allows some soil bacteria to survive adverse conditions. a. pilus b. nucleoid c. endospore d. plasmid
What is a cfu? • The average number of plasmids contained by a bacterium. • A single bacterium that grows into a visible colony on a plate. • All the bacteria streaked onto a plate. • The fraction of the bacterial population undergoing conjugation. • The amount of bacterial culture used to inoculate a plate. • The number of colonies on a plate.
Which bacterial structure is found internally in the cell? a. plasmid b. cell wall c. flagellum d. capsule e. pilus
The plasmid (episome) F factor mediates which of the following? a. Transduction b. Transformation c. Conjugation d. Replication e. Translocation
Researchers studying the bacterium Escherichia coli split a population of the bacteria into two samples.Sample 1 was transformed with a plasmid containing a gene that makes the bacteria resistant to theantibiotic kanamycin. Sample 2 was transformed with a plasmid lacking the antibiotic resistance gene.A portion of each sample was then added to growth plates containing just nutrients or growth platescontaining nutrients and kanamycin.After being allowed to grow for 24 hours at 37 0 C , the number of colonies on each growth plate wascounted (Table 1).Table 1. BACTERIAL GROWTH FOLLOWING TRANSFORMATION WITH OR WITHOUT THEKANAMYCIN RESISTANCE GENEPlace # Transforming plasmidContains KanamycinResistance Gene Growth Media Results 1 No Nutrient Only Too may colonies to count (lawn)2 yes Nutrient Only Too any colonies to count (lawn3 No Nutrient with Antibiotic No colonies observed4 Yes Nutrient with Antibiotic 7 colonies observedWhich of the following claims is best supported by the data in…
Which of the following terms describes bacteriophage DNA that has become integrated into the host cell chromosome? A) plasmid B) impolite phage C) transposon D) prophage
A Ti plasmid carrying a foreign gene is inserted into which bacterium that infects a plant cell? a. Verticillium b. Arabidopsis thaliana c. Proteobacteria d. Agrobacterium tumefaciens e. Phytomyxea