Modified Mastering Biology With Pearson Etext -- Standalone Access Card -- For Biological Science (7th Edition)
7th Edition
ISBN: 9780135276556
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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this is an example of biotechnology: In order to increase the yield of oil from canola, research focused on ways to reduce competition from competitor weed plants. Weeds can be controlled by spraying with a herbicide that interferes with biological processes, like amino acid anabolic reactions, in the plant cells. A mutant of canola that is resistant to herbicides is sometimes grown in fields that are sprayed with the herbicide. The majority of canola in Canada, though, is genetically modified to be resistant to herbicides. also use the link: https://youtu.be/VS3kcwgIwm0
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Evaluating Biotechnologies in Food Systems
As we practice being able to describe choices in Biology you will use this consolidation task to organize details about the advantages and disadvantages of biotechnologies. In an ideal world, all solutions to improving our food system would have no negative consequences. But issues in Biology involve the interaction of many different factors and changes in one…
Briefly discuss the following concerns of Biotechnology;(i) Monoclonal antibodies technology versus gene technology for cancer treatment.(ii) Traditional plant breeding versus Gene technology: Which is the more efficient way for pesticide resistant crop production?(iii) Chemical technology versus Enzyme technology in industrial application.(iv) Are genetically modified organisms (GMOs) a threat to the environment?
The genetic modification of plants for food is a hot-button issue around the world. Genes transplanted to corn, potato, soybean, and other food strains can confer desired traits, such as resistance to pests, which lessens the need for toxic pesticides. Though genetically modified foods are thought to be safe to eat, their impact on the environment may not be fully known.
Do you worry about the long-term effects of genetically modified foods on your health, or the health of the environment? Do the positive impacts outweigh the negatives?
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- To produce transgenic plants, plant tissue is exposed to Agrobacteriumtumefaciens and then grown in media containing kanamycin, carbenicillin, and plant growth hormones. Explain the purpose behind each of these three agents. What would happen if you left out the kanamycin?arrow_forwardSuppose that you are hired by a biotechnology firm to produce a strain of giant fruit flies, by using recombinant DNA technology, so that genetics students will not be forced to strain their eyes when looking at tiny flies. You go to the library and learn that growth in fruit flies is normally inhibited by a hormone called shorty substance P (SSP). You decide that you can produce giant fruit flies if you can somehow turn off the production of SSP. SSP is synthesized from a compound called XSP in a single-step reaction catalyzed by the enzyme runtase: XSP———————>SSP runtase A researcher has already isolated cDNA for runtase and has sequenced it, but the location of the runtase gene in the Drosophila genome is unknown. In attempting to devise a strategy for turning off the production of SSP and producing giant flies by using standard recombinant DNA techniques, you discover that deleting, inactivating, or otherwise mutating this DNA sequence in Drosophila turns out to be extremely…arrow_forwardBoll weevil is a serious pest of cotton crop. Effective control involves applications of chemical insecticides, increasing the cost of production and environmental pollution. The current genetically modified Bt crops have allowed great benefits to farmers but show activity limited to lepidopteran pests. This work reports on procedures adopted for integration and expression of a cry transgene conferring resistance to boll weevil and fall armyworm by using molecular tools. Four Brazilian cotton cultivars were microinjected with a minimal linear cassette generating 1248 putative lines. Complete gene integration was found in only one line (TO-34) containing one copy of crylla detected by Southern blot. Protein was expressed in high concentration at 45 davs after emergence (dae), decreasing by approximately 50% at 90 dae. Toxicity of the cry protein was demonstrated in feeding bioassays revealing 56.7% mortality to boll weevil fed buds and 88.1% mortality to fall armyworm fed leaves. A…arrow_forward
- AquAdvantage salmon is a genetically modified (GM) Atlantic salmon developed by AquaBounty Technologies. The Food and Drug Administration (FDA) has approved the company's application to allow the entry of this GM salmon into the United States food supply late last year. The FDA announced that: "AquAdvantage salmon is as safe to eat as any non- genetically engineered (GE) Atlantic salmon, and also as nutritious." However, opponents of genetically modified food are claiming that the AquAdvantage salmons could pose a serious environmental risk to the marine ecosystem if the engineered fishes escape from the farms. These transgenic salmons would be a big threat to the wild salmons. Justify this statement.arrow_forwardWhich letter is correct A. Genetic engineering is preferred because a desired gene to crops may not exist in their species, so conventional agriculture could not be applied. B. Conventional agriculture is preferred because they're natural, and don't have interference in their genome, so they're healthier. C. Genetic engineering is preferred because through it, we can create new species of plants resistant to pests. D. Conventional agriculture is preferred because they produce more crop compared to genetic modifications.arrow_forwardWhich of the following statements is true of Bt corn? It is not common in the United States. Bacterial genes were introduced into the plant with a tumor inducing plasmid (Ti) It expresses a toxin that can make you sick It contains an Agrobacterium that kills insect pests It expresses a Bacterial toxin that kills insect pests It is a transgenic plantarrow_forward
- Genetic engineering has been a debatable topic in science as many people are only aware of its risk than benefits. Which among the scenarios below are the benefits of using GMOs? I. Genetic engineering in food can be used to alter genes in crops leading to new diseases in pants. II. Genetic engineering in crops such as rice, corn and tomato can be used to obtain new strains with better nutritional qualities. III. Genetic engineering in food can be used to create totally the same substances such as proteins and other food nutrients. IV. Genetic engineering can be used to increase the immunity to diseases in plants leading to uncontrolled transfer of the resistance genes to the harmful pathogens. V. Genetic engineering can restrict the diversity in organisms. VI. Genetic engineering can be used to suppress negative traits in human like certain genetic diseases. a. II, III, IV and VI b. II, III and VI c. I, II, IV and V d. I, III,…arrow_forwardBt eggplant is a genetically-modified eggplant developed by Filipino scientists. It was developed to become pest-resistance containing the gene of the bacterium Bacillus thuringiensis which contains toxins that are lethal to some insects including the pest bollworm. Currently, it is under controversy because of a legal battle between its supporters and those who are against it. Should the government ban the production, commercialization and consumption of the said Product?arrow_forwardGenetic information has become part of our culture and it is difficult to tell the difference between unmodified and genetically modified food sources such as plant and animals. After reading this module’s material regarding vectors in biotechnology, consider the potential for nanotechnology and scientific advancement.Research nanotechnology and its potential use in biotechnology. In one or two paragraphs, explain the potential advantages and disadvantages of nanotechnology in health care, agriculture, or industry and discuss whether you would or would not support further research.arrow_forward
- What is a genetically modified food? Are the currently consumed, polyploid bananas genetically modified? Explain your reasoningarrow_forwardWhat is the role of Agrobacterium tumefaciens in the production of transgenic plants? a. Genes from A. fume fociens are inserted into plant DNA to give the plant different traits. b. Transgenic plants have been given resistance to the pest A. tumefacaens. c. A. wmefaciens is used as a vector to move genes into plant cells. d. Plant genes are incorporated into the genome of Agrobacterium tumefaciens.arrow_forwardIn this activity you will analyze the results of experiments that investigate nutritional requirement of several mutant strains of yeast. The mutations in these strains cause a nutritional requirement for an amino acid, such that the strains will not grow in media that lack one specific amino acid. Any mutant that has a nutritional requirement is called an auxotroph, and is incapable of growing in a "minimal medium" containing only a carbon source (e.g., glucose), a simple nitrogen source (e.g., ammonium sulfate), and various salts and minerals. Such strains can be supported on a medium supplemented with only the missing nutrient or on a "rich" medium that contains amino acids, vitamins, nitrogenous bases, etc. (often in the form of an extract from yeast). The wild-type individual that can synthesize the metabolic component is a prototroph, and is capable of growth on minimal medium. The mutant strains in this activity are unable to synthesize tryptophan, lysine, or histidine; one…arrow_forward
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