Muleiple Choices D Which microorganism was used to isolate plasmid A. Fungus B.

Question

Muleiple Choices D Which microorganism was used to isolate plasmid A. Fungus B. Bacteria C. Algae D. Archaca 2) Which best describes plasmids? A, Plasmids are transgenic bacteria B. Plasmids are circular pieces of DNA that can be used to carry foreign DNA into cells C. Plasmids are clones of bacteria or DNA segments. D. Plasmid s are enzymes used to cut DNA at specific locati 3) Spectrophotometer was used to measure DNA at a wave length A. 200 nm B. 350 nm C. 260 nm D. 595 nm 4) In recombinant DNA technology, plasmids may be used to A. introduce foreign DNA into human cells B. cut DNA at a specific location C. introduce foreign DNA into bacteria D. activate restriction enzymes 5) Which of the following techniques is similar to a molecular "copy machine" for DNA? A. Polymerase synthesis B. Transcription C) Polymerase chain reactions (PCR) D. Translation 6) Which of the following is NOT a step taken to isolate DNA A. Cut both human and plasmid DNA with the same restriction enzymes. B. Seal human DNA fragments into plasmids with DNA ligase.

Explanation / Answer

1. The right answer is option B. bacteria

plasmids are circular DNA, small in size capable of carrying genes which may be useful for accuring resistance, and also to transfer genetic information in the form of foreign DNA.

predominantly plasmids are present in bacterial cells such as E. coli. Archea group and fungi contains very less plasmids,

So in laboratory, plasmids are isolated from bacteria.

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