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biology genetic engineering exam questions and answers
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biology genetic engineering examquestions and answers
In a genetic engineering experiment, making copies of a gene each time a host cell
reproduces is called (cloning/reproduction) - Answer-cloning
Restriction enzyme cuts produce pieces of DNA with short single strands on each end
that are called ___ ends - Answer-sticky
DNA fragments are ______ charged - Answer-negatively
the larger a DNA fragment becomes, the __ distance it travels in a gel - Answer-less
after the DNA bands are separated, they are transferred to a piece of filter paper, which
is moistened with a ______ solution - Answer-probe
what happens when a vaccine is injected? - Answer-the immune system recognizes the
pathogen's surface proteins and responds by making defensive proteins called
antibodies
What are disadvantages of obtaining from living organisms the proteins needed to treat
disease? - Answer-not efficient, not practical, diseases can be transferred
Why are genetically engineered vaccines safer? - Answer-avoid dangers of transmitting
diseases/illnesses, they do this by inserting the genes that encode the pathogen's
surface proteins into the DNA of harmless viruses
how is a DNA fingerprint made? - Answer--made when an individual's DNA restriction
enzymes are separated by gel, probed, and then exposed to x-ray film
Genetic engineers can add favorable traits to an organism by manipulating its ____ -
Answer-genes
what is glyphosate? - Answer-a weed killer
crops that are resistant to insects do not need to be sprayed by ______ - Answer-
pesticides
Why are human genes added to the genes of farm animals? - Answer-because some
human genes are too complex to be made through gene technology
who cloned the first animal? what was its name? - Answer-Ian Wilmut cloned a sheep
named dolly
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