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TLS Online TPP Program

#Question id: 1121

Which of the following provides the best evidence that cell-signaling pathways evolved early in the history of life?

#Section 3: Genetics, Cellular and Molecular Biology

  1. Cell-signaling pathways are seen in "primitive" cells such as bacteria and yeast.

  2. Bacteria and yeast cells signal each other in a process called quorum sensing.

  3. Signal transduction molecules identified in distantly related organisms are similar.

  4. Most signals in all types of cells are received by cell surface receptors.

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TLS Online TPP Program

#Question id: 12684

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Many techniques used in molecular biology mimic in some way the natural functions such as_________.
TLS Online TPP Program

#Question id: 12685

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

The polarities of the two strands of the molecule are in opposite direction and thus DNA is described as ________
TLS Online TPP Program

#Question id: 12686

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

The two polynucleotide chains in DNA are usually found in the shape of_____
TLS Online TPP Program

#Question id: 12687

#General Aptitude

 If the diagonals of two squares are in the ratio of 2 : 5, their area will be in the ratio of
TLS Online TPP Program

#Question id: 12687

#General Aptitude

 If the diagonals of two squares are in the ratio of 2 : 5, their area will be in the ratio of
TLS Online TPP Program

#Question id: 12688

#General Aptitude

The perimeter of five squares are 24 cm, 32 cm, 40 cm, 76 cm and 80 cm respectively. The perimeter of another square equal in area to sum of the areas of these squares is :