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TLS Online TPP Program

#Question id: 31376

In S. cerevisiae, DNA replication is tightly controlled, and DNA should replicate once per cell cycle. Choose the INCORRECT statement regarding why the cells do not re-replicate their DNA in the S-phase?

#Unit 2. Cellular Organization
  1. Because S phase CDKs phosphorylate several components of the MCM helicase-loading machinery.
  2. Because phosphorylation leads to export of Cdt1 from the nucleus, and degradation of Cdc6 by the SCF ubiquitin-protein ligase in yeast.
  3. Because Cdt1 which helps in the recruitment of MCM proteins in the Gl phase is inactivated by geminin in the S-phase of the cell cycle.
  4. Because MCM helicases are loaded onto DNA to form pre-RCs only when they are phosphorylated.
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TLS Online TPP Program

#Question id: 4244

#Unit 3. Fundamental Processes

During the elongation phase of translation, which site in the ribosome represents the location where a codon is being read?
TLS Online TPP Program

#Question id: 151

#Unit 1. Molecules and their Interaction Relevant to Biology

The isoelectric point of alanine is pH = 6.15. It is mixed with proline (pHCOOH = 2.0; pHNH2= 10.6), and the mixture is placed in an electric field at pH 6.15. Which statement is true?
TLS Online TPP Program

#Question id: 26979

#Unit 10. Ecological Principles

If the organism have survival of juveniles and adult is poor, selection pressure favors in these organisms
TLS Online TPP Program

#Question id: 27105

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is examples of  β barrel structure
TLS Online TPP Program

#Question id: 19377

#Unit 12. Applied Biology

Glyphosate is a broad spectrum herbicide that inhibits the enzyme