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TLS Online TPP Program

#Question id: 760

Which force can stabilize a DNA double-helix?

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

  1. Hydrophobic bases are found in the interior of the helix where each base pair is stabilized by the same number of hydrogen bonds.

  2. Hydrophilic sugar-phosphate groups are found on the exterior of the helix where they can interact with water.

  3. Non-covalent N-glycosidic bonds can form between nitrogenous bases in opposite strands in the helix.

  4. Covalent base-stacking interactions can occur between adjacent bases within the same strand in the helix.

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TLS Online TPP Program

#Question id: 15876

#SCPH05 I Biotechnology

The following growth regulators (GRs)- auxins, cytokinins, ABA and GA3 are used in plant tissue culture, The common range of concentrations used are as follows:
GROWTH REGULATOR(GRs)                                     CONCENTERATION
A) AUXIN                                                                       i) 0.1-3 mg/L
B) GA3                                                                          ii) 0.2 mg/L
C) CYTOKININ                                                           iii) 0.1-1 mg/L
D) ABA

TLS Online TPP Program

#Question id: 20028

#SCPH01 Biochemistry

Myeloma is a cancer of the plasma cells, human a patient with myeloma, these patient produces 
TLS Online TPP Program

#Question id: 15489

#SCPH28 | Zoology

Glyphosate resistance,  Aromatic amino acid are all produced by targeting which pathway
TLS Online TPP Program

#Question id: 11919

#SCPH06 I Botany

Frequent disturbances could lead to failure of a community to reach a climax community as one seral stage keeps replacing itself, a condition known as
TLS Online TPP Program

#Question id: 764

#SCPH28 | Zoology

Which of the following is NOT correct about tRNA?