Homework Answers
A. A plasmid exist in many copies in a cell.
B. Plasmids are generally circular, but examples of linear plasmids are also known.
C. All plasmids that are used to deliver DNA contain genes for antibiotic resistance.
D. Plasmids are nucleic acid molecules that can drive their own replication in a living cell. They can be transmitted horizontally and can thrive in the host cell to high copy numbers.
So the wrong fact is B.
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Which of the following is NOT true concerning all plasmids? Choose one: O A. They may...
Choose the true statement(s) about plasmids. To be marked correct, you'll need to select all true...
Choose the true statement(s) about plasmids. To be marked correct, you'll need to select all true statements, as there may be more than one correct answer. Plasmid tend to be circular. Plasmids often contain genes that confer a survival advantage to a cell. Plasmids usually consist of single stranded DNA. Plasmids tend to exist outside of a cell's chromosome.
I hate microbio Question 5 1.5 pts (Multiple answers) Plasmids play a very important role in...
I
hate microbio
Question 5 1.5 pts (Multiple answers) Plasmids play a very important role in biotechnology research. Please choose all that are TRUE about plasmids. Plasmids are isolated from bacteria. Bacteria cannot take up plasmids Plasmids contain restriction sites. A plasmid can provide a new trait or characteristic to a bacteria. Plasmids are isolated from humans. Plasmids are never transferred from one bacteria to another. Plasmids may contain genes that provide antibiotic resistance. here to search Question 7 0.5...
Is this one right? What is the most common way that a bacterium can acquire a...
Is this one right?
What is the most common way that a bacterium can acquire a plasmid with genes for antibiotic resistance from another bacterium? O During sexual reproduction, the offspring receives chromosomes and plasmids from both bacterial parents. A bacterium can take up DNA (including plasmids) lost by another bacterium into its immediate environment through the process of transformation. O o Viruses can pick DNA (including plasmids) from one bacterium and transfer it to another bacterium by the process...
R-plasmids have which ONE of the following properties: A. Are less than 10 kb in size...
R-plasmids have which ONE of the following properties: A. Are less than 10 kb in size B. Contain antibiotic resistance genes and are self-transmissible C. Have a high copy number D. Are mobilizable but not self-transmissible E. Are commonly used for cloning recombinant DNA
Bacterial cells, such as E. coli, are surrounded by a fluid plasma membrane and enclosed by...
Bacterial cells, such as E. coli, are surrounded by a fluid plasma membrane and enclosed by a rigid cell wall that protects the cell from damage. You will recall that there is no nuclear envelope in prokaryotic cells, but rather a “nucleoid region” with a single chromosome that is continuous (circular), not linear, as in eukaryotes. All of the genes required for basic survival and reproduction are found in the main chromosome. In addition to the main chromosomes, some DNA...
33. Which of the following requires direct contact between a donor bacterium and a recipient bacterium...
33. Which of the following requires direct contact between a donor bacterium and a recipient bacterium for transfer of DNA? a. Crossing over b. Mutation c. Transduction d. Conjugation e. Transformation 34. All of the following are true of base substitutions except: a A base substitution may cause no change in the protein encoded by the affected gene b. A base substitution can result in the production of a shortened protein c. Mutations rarely involve base substitutions. d. Base substitutions...
plasmids are linear pieces of DNA A. True. B. False Which of the following is most...
plasmids are linear pieces of DNA A. True. B. False Which of the following is most likely to cause human disease? A. Barophiles B. Osmophiles C. Mesophiles D. Alkalophiles All of the following apply to plasmid DNA except A. they gave few genes B. they are always required C they are essential for survival of the bacterium The most important result of fermentation is A. production of organic compounds B. production of ATP C. production of NADH D. regeneration of...
Question 32 3 pts Which of the following statements correctly describes R plasmids? O They contain...
Question 32 3 pts Which of the following statements correctly describes R plasmids? O They contain genes that allow for the day-to-day metabolic processes of prokaryotic organisms. O They are critical to archaea reproduction. They are commonly found in the nuclei of unicellular eukaryotes. They are only characteristic of retroviruses. They allow for antibiotic resistance among bacteria.
Question (1 point) 1st attempt Which statement is true about cell-surface receptors? Choose one: O All...
Question (1 point) 1st attempt Which statement is true about cell-surface receptors? Choose one: O All extracellular signal molecules bind to a single type of receptor. O All cell-surface receptors bind to a single, unique extracellular signal molecule. O Each cell-surface receptor can bind to an endless variety of extracellular signal molecules. Some cell-surface receptors can bind to multiple signal molecules. O All drugs block the activation of ion-channel-coupled receptors. 11 OF 15 QUESTIONS COMPLETED 07/15 >
54. The advantage of a cDNA library of eukaryotic genes compared with a genomic library is...
54. The advantage of a cDNA library of eukaryotic genes compared with a genomic library is that the cDNA library: a. always has the entire gene sequence b. lacks introns C. contains both introns and exons d. consists of single-stranded DNA e consists of RNA and DNA 55. Which of the following is an example of a cloning vector? a. Human growth hormone b. Mosquito c. Plasmid d. Tick e. Ribosomal RNA 56. Transformation in recombinant DNA technology: a. Requires...
I
hate microbio
Question 5 1.5 pts (Multiple answers) Plasmids play a very important role in biotechnology research. Please choose all that are TRUE about plasmids. Plasmids are isolated from bacteria. Bacteria cannot take up plasmids Plasmids contain restriction sites. A plasmid can provide a new trait or characteristic to a bacteria. Plasmids are isolated from humans. Plasmids are never transferred from one bacteria to another. Plasmids may contain genes that provide antibiotic resistance. here to search Question 7 0.5...
Is this one right?
What is the most common way that a bacterium can acquire a plasmid with genes for antibiotic resistance from another bacterium? O During sexual reproduction, the offspring receives chromosomes and plasmids from both bacterial parents. A bacterium can take up DNA (including plasmids) lost by another bacterium into its immediate environment through the process of transformation. O o Viruses can pick DNA (including plasmids) from one bacterium and transfer it to another bacterium by the process...
Bacterial cells, such as E. coli, are surrounded by a fluid plasma membrane and enclosed by a rigid cell wall that protects the cell from damage. You will recall that there is no nuclear envelope in prokaryotic cells, but rather a “nucleoid region” with a single chromosome that is continuous (circular), not linear, as in eukaryotes. All of the genes required for basic survival and reproduction are found in the main chromosome. In addition to the main chromosomes, some DNA...
33. Which of the following requires direct contact between a donor bacterium and a recipient bacterium for transfer of DNA? a. Crossing over b. Mutation c. Transduction d. Conjugation e. Transformation 34. All of the following are true of base substitutions except: a A base substitution may cause no change in the protein encoded by the affected gene b. A base substitution can result in the production of a shortened protein c. Mutations rarely involve base substitutions. d. Base substitutions...
Question 32 3 pts Which of the following statements correctly describes R plasmids? O They contain genes that allow for the day-to-day metabolic processes of prokaryotic organisms. O They are critical to archaea reproduction. They are commonly found in the nuclei of unicellular eukaryotes. They are only characteristic of retroviruses. They allow for antibiotic resistance among bacteria.
Question (1 point) 1st attempt Which statement is true about cell-surface receptors? Choose one: O All extracellular signal molecules bind to a single type of receptor. O All cell-surface receptors bind to a single, unique extracellular signal molecule. O Each cell-surface receptor can bind to an endless variety of extracellular signal molecules. Some cell-surface receptors can bind to multiple signal molecules. O All drugs block the activation of ion-channel-coupled receptors. 11 OF 15 QUESTIONS COMPLETED 07/15 >
54. The advantage of a cDNA library of eukaryotic genes compared with a genomic library is that the cDNA library: a. always has the entire gene sequence b. lacks introns C. contains both introns and exons d. consists of single-stranded DNA e consists of RNA and DNA 55. Which of the following is an example of a cloning vector? a. Human growth hormone b. Mosquito c. Plasmid d. Tick e. Ribosomal RNA 56. Transformation in recombinant DNA technology: a. Requires...
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