When a region of DNA must be repaired by removing and replacing some of the nucleotides, what ensures that the new nucleotides are in the correct sequence?

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#Question id: 4652

#Unit 11. Evolution and Behavior

The graph depicts four possible patterns for the abundance of 3TC-resistant HIV within an infected human over time. If 3TC resistance is costly for HIV, then which plot (I—IV) best represents the response of a strain of 3TC-resistant HIV over time, if 3TC administration begins at the time indicated by the arrow?

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#Question id: 2438

#Unit 2. Cellular Organization

Rac, a GTPase superfamily protein,

a. is related to Ras.                             

b. may be activated by growth factors.

c. stimulates lamellipodia formation. 

d. stimulates filopodia formation.

e. stimulates stress fiber assembly.

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#Question id: 13097

#Unit 13. Methods in Biology

You are a scientist who is using genomics to currently study a new bacterial species that no one has ever studied before. The following sequence is a piece of DNA within the coding region of a gene that you have recently sequenced.

 

If you take any bacterial gene sequence, before you begin doing any sequence analysis on it, there are six potential open reading frames. Why are there six?

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#Question id: 12276

#Unit 7. System Physiology – Animal

Because the usual rate of phosphate filtration exceeds the transport maximum for phosphate reabsorption, which of the following is true?

TLS Online TPP Program

#Question id: 27497

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following bonds is true Nonreducing Disaccharides such as Glycosylglycosides