Practice Questions

TLS Online TPP Program

#Question id: 19841

Which of the following is true regarding Reverse transcriptase ?

#Unit 13. Methods in Biology

is used to proch1ce cDNA (complementary DNA) copies of, usually, mRNA that are used for creation of cDNA libraries
for removing 5' -phosphate from DNA ends.
for addition of phosphate group to an end having a free 5'-0H.
for removal of single-stranded protrusions from ends; both 3'- and 5'-extensions are removed.

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TLS Online TPP Program

#Question id: 414

#Unit 1. Molecules and their Interaction Relevant to Biology

The hydrolysis of phosphoenolpyruvate proceeds with a DG'° of about –62 kJ/mol. The greatest contributing factors to this reaction are the destabilization of the reactants by electostatic repulsion and stabilization of the product pyruvate by:

TLS Online TPP Program

#Question id: 12376

#Unit 10. Ecological Principles

All of the following may be considered as sites for secondary succession EXCEPT

TLS Online TPP Program

#Question id: 2275

#Unit 2. Cellular Organization

A gram-negative bacterium is enclosed by

TLS Online TPP Program

#Question id: 5439

#Unit 8. Inheritance Biology

Which of the following phenotypes is an example of polygenic inheritance?