HUMAN BIOLOGY:CONC.+CURRENT..(LOOSE)
7th Edition
ISBN: 9780321862525
Author: Johnson
Publisher: PEARSON
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Chapter 20, Problem 10TY
Summary Introduction
Introduction:
The transfer of pieces of DNA (deoxyribonucleic acid) from one organism into another is made possible through recombinant DNA technology. In this process, specific genes are inserted into the bacteria so that it can be induced to produce useful proteins. It requires specialized tools and components, which includes restriction enzymes, DNA ligases, plasmids, and bacteria.
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The function of a restriction enzyme is to
a. prevent the movement of DNA outside the nucleus
b. separate the DNA double helix
c. cut the nucleotide sequence at a specific location in DNA
d. proofread DNA for accidental damages and corrects these errors
When E. coli cells are mixed with recombinant vector DNA and subject to a stress such as heat shock, a small fraction of the cells will take up the plasmid DNA, a process known as :
A.
Ligation.
B.
Transformation.
C.
Transfection.
D.
Digestion.
In E.coli, the following enzymes do NOT synthesize the RNA primer for Okazaki fragments?
A.DnaA
B. DnaC
C.DnaG
D.None of the above
Chapter 20 Solutions
HUMAN BIOLOGY:CONC.+CURRENT..(LOOSE)
Ch. 20 - Prob. 1QCCh. 20 - GM foods are created for a variety of reasons,...Ch. 20 - Explain how DNA is sequenced.Ch. 20 -
2. Describe the enzymes used in recombinant DNA...Ch. 20 - Prob. 3CRCh. 20 - Discuss the polymerase chain reaction technique,...Ch. 20 - Prob. 5CRCh. 20 - Prob. 6CRCh. 20 - Prob. 7CRCh. 20 - Prob. 8CR
Ch. 20 - Prob. 9CRCh. 20 -
10. List the diseases that gene therapy may be...Ch. 20 - Prob. 1TYCh. 20 - Prob. 2TYCh. 20 - Which of the following is used to separate...Ch. 20 - Genetically engineered human insulin, human growth...Ch. 20 - Prob. 5TYCh. 20 - All of the following statements about transgenic...Ch. 20 -
7. "Gene pharming” refers to:
a. using transgenic...Ch. 20 - Prob. 8TYCh. 20 - Prob. 9TYCh. 20 - Prob. 10TYCh. 20 - Which of the following is needed for sequencing...Ch. 20 - A tiny amount of blood was recovered from a crime...Ch. 20 - Which technique will allow amplification of the...Ch. 20 - A gene for a bacterial protein with insecticide...Ch. 20 - Prob. 15TYCh. 20 -
1. What do you think are the chances that someone...Ch. 20 - Imagine a future in which the respiratory effects...Ch. 20 - Prob. 3AWKCh. 20 - Prob. 4AWKCh. 20 - Prob. 5AWKCh. 20 - There is interest in producing vaccines in foods....Ch. 20 - Transgenic plants have the potential to improve...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Describe how restriction enzymes like EcoR1 are used to create recombinant plasmids and what the process is for using these plasmids to replicate a piece of target DNA. Include information about how to create sticky ends, the makeup of the bacterial plasmid and how to tell if the gene was successfully inserted in the plasmid and if the plasmid has been transformed by the bacteria. You may use a drawing to enhance your description.arrow_forwardWhat is the enzymatic function of restriction enzymes? Group of answer choices a. to cut nucleic acids at specific sites b. to join nucleotides during transcription c. to add new nucleotides to the growing strand of DNA d. to repair breaks in sugar - phosphate backbonesarrow_forwardWhich of the following enzymes is responsible for ensuring that genetic material at the end of the chromosome is not lost during DNA replication? a. Helicase b. DNA Polymerase c. Telomerase d. DNA Ligase e. Primasearrow_forward
- Proteins that bind to a specific DNA sequence and help control the recruitment of RNA polymerase are called ... 1.) CRISPR/Cas9 2.) restriction enzymes 3.) transcription factors 4.) topoisomerasesarrow_forwardDEFINE THE FOLLOWING: 1) restriction enzyme 2) plasmid 3) recombinant DNAarrow_forwardRecombinant DNA molecules are produced by incubating plasmids that have been broken open by a restriction enzyme together with DNA molecules containing complementary sticky ends in the presence of the enzyme ? 1) exonuclease 2) DNA connectase 3) DNA ligase 4) DNA polymerase 5) endonucleasearrow_forward
- Explain what restriction enzymes are, how they function and how they can be used to make recombinant DNAarrow_forwardWhat carries a gene from one organism into a bacteria cell? a. a plasmid b. an electrophoresis gel c. a restriction enzyme d. polymerase chain reactionarrow_forwardThe other options are: a. RNA cannot be digested by restriction enzymes b. RNA is small enough to be resolved on an agarose gel without the need for restriction digestion. c. RNA is single stranded and DNA is double strandedarrow_forward
- Researchers are designing several experiments to test the ability of Salmonella bacteria to develop antibiotic resistance. A culture of Salmonella bacteria is exposed to the same concentrations (200 mg/L) of an antibiotic for four days. The table shows the number of isolated resistant bacteria over a four-day period. Which of the following statements best explains these results? A - The bacteria were not affected by the antibiotic. B - After being exposed to the antibiotic, the bacteria altered their DNA. C - A new species of bacteria emerged after the antibiotics were introduced. D - Random mutations led some bacteria to be resistant and, over time, they increased in the population.arrow_forwardWhich of the following is NOT common to all repair mechanisms? A. Detection of the lesion B. Removal of the damaged DNA sequence/ nucleotide/ base C. Removal of free radicals at the site of injury D. Repair of the lesion E. Involvement of enzymes in removing the lesion and/or repair of the damaged sequence/nucleotide/base.arrow_forwardResearchers can isolate a sample of cells, such as skin fibroblasts, and grow them in the laboratory. This procedure is called a cell culture. A cell culture can be exposed to a sample of DNA. If the cells are treated with agents that make their membranes permeable to DNA, the cells may take up the DNA and incorporate it into their chromosomes. This process is called transformation or transfection. Scientists have transformed human skin fibroblasts with methylated DNA and then allowed the fibroblasts to divide for several cellular generations. The DNA in the daughter cells was then isolated, and the segment that corresponded to the transformed DNA was examined. This DNA segment in the daughter cells was also found to be methylated. However, if the original skin fibroblasts were transformed with unmethylated DNA, the DNA found in the daughter cells was also unmethylated. With regard to the transformed DNA, do fibroblasts perform de novo methylation, maintenance methylation, or both?…arrow_forward
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