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: 1569

#Unit 4. Cell Communication and Cell Signaling

A bacterium entering the body through a small cut in the skin will do which of the following?

TLS Online TPP Program

#Question id: 24509

#Unit 10. Ecological Principles

Polyphagous parasites, usually complete their life cycle in two or more different host species and they also exhibit sexual reproduction . These types of host are,

TLS Online TPP Program

#Question id: 27075

#Unit 1. Molecules and their Interaction Relevant to Biology

As atom "A" approaches, the electrons of atom "B" will be attracted by the positive end of atom "A". As a result, the electrons of atom "B" will migrate to the left side and make the left side slightly negative. This phenomenon can be explained by

TLS Online TPP Program

#Question id: 14902

#Unit 6. System Physiology – Plant

Transpirational water flow in the xylem requires a mechanically strong wall that resists from,

TLS Online TPP Program

#Question id: 5426

#Unit 8. Inheritance Biology

Which of the following is incorrect regard polygenic inheritance?