2. To manipulate cells and DNA, scientists use tools that are borrowed from nature, including: These naturally occurring enzymes are used as a defense by bacteria to cut up DNA from viruses at specific recognition sequences. This enzyme is used in nature to repair broken DNA. It can also be used to paste new genes into DNA. These are circular units of DNA. They can be engineered to carry genes of interest. These are viruses that infect bacteria and can be engineered to carry recombinant DNA.

2. To manipulate cells and DNA, scientists use tools that are borrowed from nature, including: These naturally occurring enzymes are used as a defense by bacteria to cut up DNA from viruses at specific recognition sequences. This enzyme is used in nature to repair broken DNA. It can also be used to paste new genes into DNA. These are circular units of DNA. They can be engineered to carry genes of interest. These are viruses that infect bacteria and can be engineered to carry recombinant DNA.

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

Chapter18: Dna Technologies: Making And Using Genetically Altered Organisms, And Other Applications

Section: Chapter Questions

Problem 6TYK

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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)
7. Why recombinant DNA is very useful in improving our health conditions?A. Human insulin can be reproduced by bacteria?B. Vaccine can be reproduced by fungi or bacteriaC. Human growth hormone can be obtained from E. ColiD. All of the above 8. Which of the following is/are example of genetic engineering?A. A farmer choose a breed of cow for greater milk production.B. The use of bacteria in order to produce human insulinC. The insertion of clone genes to plant cellsD. Cross pollination of squash flowers. 9. Bacterial cells as host organisms may expose the gene to make protein products such as insulin and growth hormone . Which of the following processes are involved?A. replication and transcription. B. Transcription and replication C. Transcription and transformation. D. Replication and transformation
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