3. Which of the following statement is FALSE about CRISPR? A. The size of CRISPR locus is usually between 800 and 2000 bp. B. Only bacteria in heirloom yogurt, but not in commercial yogurt, can acquire spacers in their CRISPR locus C. The CAS gene is always located upstream of the CRISPR locus D. If a spacer sequence matches with a part of the viral genome, bacteria can defend against the virus

3. Which of the following statement is FALSE about CRISPR? A. The size of CRISPR locus is usually between 800 and 2000 bp. B. Only bacteria in heirloom yogurt, but not in commercial yogurt, can acquire spacers in their CRISPR locus C. The CAS gene is always located upstream of the CRISPR locus D. If a spacer sequence matches with a part of the viral genome, bacteria can defend against the virus

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter17: Bacterial And Viral Genetics

Section: Chapter Questions

Problem 4TYK

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Similar questions

1. What is the function of the CRISPR/ Cas system 2. Briefly outline the components of the CRISPR/Cas system
1. What makes CRISP particularly useful compared to other genetic engineering techniques? A. CRISPR can add DNA to multiple cells at the same time B. CRISPR works better in bacteria C. CRISPR can target one specific area of DNA to cut D. CRISP is capable of transporting DNA through the cell walls of plants 2. MOST viruses are capable of infecting A. many different species B. many cell types in the same species C. only specific cell types that have a particular receptor
1. What extra step need to be taken after collecting samples of many viruses before PCR can be performed? What enzyme will accomplish the extra step?
Why are antibiotic resistance markers such as ampR important components of bacterial plasmid cloning vectors? a. The plasmid must have resistance to accept DNA inserts. b. They allow the detection of plasmids that contain an inserted DNA fragment. c. They ensure the presence of the ori site. d. They ensure that the plasmid can be cut by a restriction enzyme. e. They allow identification of bacteria that have taken up a plasmid.
Which of the following is not correct for bacterial conjugation? a. Both Hfr and F+ bacteria have the ability to code for a sex pilus. b. After an F- cell has conjugated with an F+, its plasmid holds the F+ factor. c. The recipient cell is Hfr following conjugation. d. In an HfrF- conjugation, DNA of the main chromosomemoves to a recipient cell. e. Genes on the F factor encode proteins of the sex pilus.
After a polymerase chain reaction (PCR), agarose gel electrophoresis is often used to: a. amplify the DNA. b. convert cDNA into genomic DNA. c. convert cDNA into messenger RNA. d. verify that the desired DNA sequence has been amplified. e. synthesize primer DNA molecules.
A set of cells that host various DNA fragments collectively representing an organisms entire set of genetic information is a _________. a. genome b. clone c. genomic library d. GMO
In the Hershey-Chase experiment with bacteriophages, (a) harmless bacterial cells permanently transformed into virulent cells (b) DNA was shown to be the transforming factor of earlier bacterial transformation experiments (c) the replication of DNA was conclusively shown to be semiconservative (d) viral DNA was shown to enter bacterial cells and cause the production of new viruses within the bacteria (e) viruses injected their proteins, not their DNA, into bacterial cells
1. How may recombinant DNA molecules be introduced into human cells? a. by splicing the needed genes into a mammalian chromosome using restriction enzymes. b. by adding plasmids to the mammalian cells. c. by using engineered viruses as vectors. d. by using a gene gun. 2. If someone is accused of a crime, investigators can collect his or her DNA to compare the DNA of the cells found at the crime scene. To collect human DNA, investigators often swab the inside of person’s cheek. Just a few human cheek cells contain enough material to perform PCR. In a cell, the nucleus and mitochondria contain DNA that is the starting material for PCR. Identify the 4 components needed to start a PCR reaction (equipment not included)
5 How the use of the nucleic acid vaccine gives protection against diseases like COVID-19. Please briefly explain .?
1. What are the different elements you would need if you wanted to perform CRISPR to edit a gene? 2. What are some of the ways CRISPR technology can benefit humans?
1. Write if the statement is true and modify the statement with the correct answer if its false a.White colonies represent those bacteria that do not express the genes for beta-galactosidase because restriction enzymes have cut the gene and ligase have not repaired the break b.Antibiotic resistance genes in bacterial transformation are used as marker genes because of ease of detection of transformants. c. Bacterial transformation simply means the insertion of a recombinant plasmid into a bacterial cell.