7780001
Descripción
Test por Tumaini Sango, actualizado hace más de 1 año
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Creado por Tumaini Sango
hace casi 8 años
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Pregunta 1
Pregunta
To produce animals with certain desirable characteristics by selective breeding, humans take advantage of
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the natural variations that exist among individuals
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the ideal traits produced by genetic engineering.
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recombinant plasmids with foreign DNA>
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drugs and radiation that can cause new mutations to arise.
Pregunta 2
Pregunta
What has been an advantage of producing transgenic plants?
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increasing the food supply
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using more pesticides
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producing clones
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studying human genes
Pregunta 3
Pregunta
A plant cell is successfully transformed if
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a plasmid enters the cell and the cell breaks down the plasmid
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the cell integrates foreign DNA into one of its chromosomes.
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the cell reproduces normal offspring, which also produce offspring.
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a plasmid is unable to enter the cell.
Pregunta 4
Pregunta
Which of the following findings, if true, would support CRITICS of GM crops?
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Bt corn is proven harmless to butterflies.
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Bt cotton requires farmers to use less insecticide on their fields.
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Bt corn reduces the populations of bees needed to pollinate the plants.
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Bt cotton produces high crop yields than other cotton.
Pregunta 5
Pregunta
What is an advantage of using transgenic bacteria to produce human proteins?
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The human proteins produced by transgenic bacteria work better than those produced by humans.
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Transgenic bacteria can produce human proteins in large amounts.
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The human proteins produced by transgenic bacteria last longer than those produced by humans.
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Transgenic bacteria can produce human proteins used to make plastics.
Pregunta 6
Pregunta
The process of making changes in the DNA code of a living organism is called
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selective breeding.
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genetic engineering.
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inbreeding.
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hybridization.
Pregunta 7
Pregunta
One reason farmers often choose GM crops over non-GM crops because GM crops are
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less controversial
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less expensive
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much productive
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much safer
Pregunta 8
Pregunta
A DNA molecule produced by combining DNA from different sources is known as
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a mutant.
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a hybrid.
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a polyploid.
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recombinant DNA.
Pregunta 9
Pregunta
Gene therapy is successful if the
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viruses carrying the replacement gene infect the person’s cells
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replacement gene is REPLICATED in the person’s cells.
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replacement gene is EXPRESSED in the person’s cells.
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replacement gene is successfully spliced to viral DNA
Pregunta 10
Pregunta
Certain drugs can be used in plant breeding to make polyploid plants. These drugs
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change the number of chromosomes found in cells.
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change eukaryotic plants into prokaryotic plants.
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frequently cause mutations, which create new alleles and genes.
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insert foreign DNA into plant chromosomes.
Pregunta 11
Pregunta
What kind of technique do scientists use to make transgenic organisms?
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hybridization
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inbreeding
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inducing of mutations
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genetic engineering
Pregunta 12
Pregunta
Which statement below might be used by someone who is arguing against the use of GM crops?
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GM crops reduce the amount of land and energy that need to be devoted to agriculture because they have high yields.
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GM crops need more insecticide to be used than other crops because they grow faster.
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The patents for the seeds of GM crops are held by big companies, which may raise prices and force small farmers out of business.
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No studies have shown that GM crops are dangerous to human health.
Pregunta 13
Pregunta
To create animals that have the characteristics of both species, some people have bred buffalo and cattle together. This is an example of
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inbreeding
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hybridization
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genetic engineering
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transformation
Pregunta 14
Pregunta
Which of the following has the disadvantage of possibly bringing two recessive alleles together and causing a genetic defect?
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inbreeding
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hybridization
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genetic engineering
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transformation
Pregunta 15
Pregunta
Which of the following would require the use of recombinant DNA?
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Crossing two apple trees to create better apples.
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Breeding a donkey and a horse to make a mule.
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Engineering bacteria that produce human insulin.
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Creating a polyploid banana tree.
Pregunta 16
Pregunta
Which protein creates DNA fragments with sticky ends?
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DNA polymerase
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DNA ligase
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restriction enzyme
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lysozyme
Pregunta 17
Pregunta
The purpose of gene therapy is to
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treat genetic disorders.
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determine the sequences of genes.
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remove mutations from genes.
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change dominant alleles to recessive alleles.
Pregunta 18
Pregunta
During a polymerase chain reaction, the number of DNA copies increases exponentially with each cycle.
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- True
- False
Pregunta 19
Pregunta
A polyploid plant has more than two copies of each gene.
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- True
- False
Pregunta 20
Pregunta
Native Americans took teosine and used selective breeding to make corn, a more productive and nutritious plant.
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- True
- False
Pregunta 21
Pregunta
Animal breeders maintain cat and dog breeds by the process of hybridization.
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- True
- False
Pregunta 22
Pregunta
In Figure 15–1, between which nucleotides is the DNA cut?
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adenine and thymine
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cytosine and guanine
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thymine and cytosine
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adenine and guanine
Pregunta 23
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gel electrophoresis being used to sequence DNA
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hybridization being used to manipulate DNA
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an enzyme being used to cut DNA
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polymerase chain reaction being used to copy DNA
Pregunta 24
Pregunta
During which numbered Steps is a restriction enzyme used?
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1 and 7
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2, 3, and 4
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5 and 6
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6 and 7
Pregunta 25
Pregunta
What process is being illustrated?
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The Central Dogma
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Transformation
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Doping
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Genetic Engineering
Pregunta 26
Pregunta
During which steps are bacteria reproducing?
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6 and 7
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1 and 2
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3
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4 and 5
Pregunta 27
Pregunta
Which steps represent the recombinant plasmid?
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5
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7
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1
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4
Pregunta 28
Pregunta
Which sheep is the source of the nucleus in the fused cell?
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Sheep A
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Sheep B
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Sheep C
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Lamb
Pregunta 29
Respuesta
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Sheep B
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Sheep C
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Sheep A
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Lamb
Pregunta 30
Pregunta
Which two animals are genetically identical?
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Sheep C and Lamb
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Sheep B and Lamb
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Sheep A and Sheep B
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Sheep A and Lamb
Pregunta 31
Respuesta
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Sheep B
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Sheep C
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Sheep A
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Lamb
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