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TLS Online TPP Program

#Question id: 4961

An early consequence of the release of oxygen gas by plant and bacterial photosynthesis was to

#Unit 11. Evolution and Behavior

  1. make life on land difficult for aerobic organisms.

  2. change the atmosphere from oxidizing to reducing.

  3. make it easier to maintain reduced molecules

  4. cause iron in ocean water and terrestrial rocks to rust (oxidize).

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TLS Online TPP Program

#Question id: 23664

#Unit 13. Methods in Biology

________ is a technique used to link  noncontiguous recombinants from the same gene or to identify genes whose sequence and gene product are unknown other than by the effects of mutation.
TLS Online TPP Program

#Question id: 23665

#Unit 13. Methods in Biology

A/an ________ is often used to enable bacteria to produce large amounts of eukaryotic protein.
TLS Online TPP Program

#Question id: 23666

#Unit 13. Methods in Biology

Which is not necessary as part of an expression vector used in E. coli?
TLS Online TPP Program

#Question id: 23667

#Unit 13. Methods in Biology

It can be difficult for bacteria to produce functional eukaryotic proteins even when all the components necessary for gene expression are present because ________.
TLS Online TPP Program

#Question id: 23668

#Unit 13. Methods in Biology

A mouse embryo is transformed with recombinant DNA from a rat. The resulting mouse is a________ organism.
TLS Online TPP Program

#Question id: 23669

#Unit 13. Methods in Biology

The Ti plasmid is derived from ________.