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#Question id: 9569

Certain thermophilic bacteria live in hot springs at temperatures close to the boiling point of water. What challenges do such bacteria overcome successfully?

#SCPH28 | Zoology
  1. Tendency of proteins to denature at high temperatures
  2. Acceleration of chemical processes at high temperatures
  3. Changes in the properties of lipids (and thus properties of membranes) at high temperatures
  4. All of the above
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TLS Online TPP Program

#Question id: 7759

#SCPH01 Biochemistry

WRKY plant-specific group of transcription factors that play important role in many plant metabolic and developmental processes such as;
a) It contain a 30 amino acid region named for the conserved amino acid sequence WRKYGQK in its N-terminal domain
b) It is an important regulators of plant–pathogen interactions as well as senescence
c) WRKY53 is involved in the regulation of dark-induced leaf senescence
d) In Arabidopsis, leaf senescence is delayed in knockout mutants of the WRKY53 gene
e) WRKY53 also binds to the promoter of the WRKY53 gene, inhibiting its own expression in a negative feedback loop
Which of the following given prediction about WRKY transcription factor is correct?
TLS Online TPP Program

#Question id: 9587

#SCPH06 I Botany

The structure of the four major protein complexes in the thylakoid membrane are organised form such as ;

a.) PSII is located predominantly in the stacked regions of the thylakoid membrane and Cytochrome b6f complexes are evenly distributed

b.) PSI and ATP synthase are found in the unstacked regions protruding into the stroma

c.) Lateral separation of the two photosystems requires that electrons and protons produced by PSII be transported directly to PSI and the ATP coupling enzyme

d.) Four main protein complexes of the thylakoid membrane, shown also are the two diffusible electron carriers—plastocyanin, which is located in the thylakoid lumen, and plastohydroquinone (PQH2) in the membrane, The lumen has a positive electrical charge with respect to the stroma

Which of the following statements correct?
TLS Online TPP Program

#Question id: 6964

#I Life Science/ Life Sciences Group – I-V

If embryos are disaggregated with chemicals or proteases, and the individual cells are mixed together in culture, what will happen?
TLS Online TPP Program

#Question id: 4814

#SCPH06 I Botany

The frequency of recombinant gametes is half the frequency of crossing over between genes present on same chromosome is due to
TLS Online TPP Program

#Question id: 3641

#SCPH06 I Botany

The point at which separation of the strands and synthesis of new DNA takes place is known as the: