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TLS Online TPP Program

#Question id: 5844

In homologous genetic recombination, RecA protein is involved in:

#Unit 8. Inheritance Biology

  1. formation of Holliday intermediates and branch migration.

  2. introduction of negative supercoils into the recombination products.

  3. nicking the two duplex DNA molecules to initiate the reaction.

  4. pairing a DNA strand from one duplex DNA molecule with sequences in another duplex, regardless of complementarity.

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TLS Online TPP Program

#Question id: 10380

#Unit 6. System Physiology – Plant

Two separate processes, the first involves a signaling pathway that facilitates the infection process itself and  the second involves the activation of a set of genes that regulate the formation of root nodules. Which of the following receptor is thought to participate in both processes?
TLS Online TPP Program

#Question id: 363

#Unit 1. Molecules and their Interaction Relevant to Biology

What is the pH of a mixture of 0.042 M NaH2PO4 and 0.058 M Na2HPO4? If 1.0 mL of 10.0 M NaOH is added to a liter of the buffer prepared, how much will the pH change? (pKa = 6.86)
TLS Online TPP Program

#Question id: 21130

#Unit 12. Applied Biology

Erythritol is__
TLS Online TPP Program

#Question id: 8925

#Unit 9. Diversity of Life Forms

What is the probable sequence in which the following clades of animals originated, from earliest to most recent?
1. tetrapods
2. vertebrates
3. deuterostomes
4. amniotes
5. bilaterians
TLS Online TPP Program

#Question id: 26355

#Unit 2. Cellular Organization

Which of the following phenomenon will be affected most if exon – intron undergoes single base substitution