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TLS Online TPP Program

#Question id: 10214

LHCII, one of the membrane-bound antenna pigment proteins, which can be phosphorylated and non-phosphorylated by a specific kinase present in thylakoid membrane. Which of the following statements are NOT TRUE ?

#Unit 6. System Physiology – Plant
  1. A protein kinase that can phosphorylate a specific threonine residue on the surface of LHCII
  2. When LHCII is  phosphorylated, it delivers more energy to PSI while LHCII is not phosphorylated, it delivers more energy to PSII
  3. The kinase is activated when plastoquinone, one of the electron carriers between PSI and PSII, accumulates in the reduced state
  4. Reduced plastoquinone accumulates when PSI is being activated more frequently than PSII
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TLS Online TPP Program

#Question id: 2562

#Unit 2. Cellular Organization

Which of the following statements is true of steroid receptors?
TLS Online TPP Program

#Question id: 24327

#Unit 4. Cell Communication and Cell Signaling

What is the major roles of Tight junctions in animal cells?
TLS Online TPP Program

#Question id: 2974

#Unit 2. Cellular Organization

Following statements are regarding to control of the G1–S phase transition in budding yeast.

A. G1 cyclin-CDK complexes stimulate the formation of G1/S phase cyclin-CDKs, which then initiate bud formation, centrosome duplication, and DNA replication. In yeast, the G1 cyclin gene is called CLN3.

B. Once sufficient Cln3 is synthesized from its mRNA, Cln3-CDK complexes phosphorylate and activate the transcriptional repressor Whi5.

C. Phosphorylation of Whi5 promotes its export out of the nucleus, allowing the transcription factor complex SBF to induce transcription of the G1/S phase cyclin genes CLN1 and CLN2 as well as other genes important for DNA replication.

D. Once produced, Cln1/2-CDKs contribute to further Whi5 phosphorylation. This positive feedback loop ensures the rapid accumulation of G1/S phase cyclin-CDKs.

Which of the following statements are correct?
TLS Online TPP Program

#Question id: 5926

#General Aptitude

Today is Monday . After 61 days , it will be
TLS Online TPP Program

#Question id: 5259

#Unit 8. Inheritance Biology

Genetic variation in bacterial populations cannot result from