Practice Questions

TLS Online TPP Program

#Question id: 760

Which force can stabilize a DNA double-helix?

#SCPH01 Biochemistry

Hydrophobic bases are found in the interior of the helix where each base pair is stabilized by the same number of hydrogen bonds.
Hydrophilic sugar-phosphate groups are found on the exterior of the helix where they can interact with water.
Non-covalent N-glycosidic bonds can form between nitrogenous bases in opposite strands in the helix.
Covalent base-stacking interactions can occur between adjacent bases within the same strand in the helix.

More Questions

TLS Online TPP Program

#Question id: 15185

#SCPH05 I Biotechnology

Phenomenon of Smiling Effect is largely applicable in

A. Gel Electrophoresis

C. Free Solution

TLS Online TPP Program

#Question id: 3637

#SCPH28 | Zoology

Parents that are homozygous for different mutations a, b and c are crossed, producing offspring that are heterozygous as following

aa X bb = ab (X)

bb X cc = bc (Y)

aa X cc = ac (Z)

If a and b belong to same locus but b and c belong to different locus then phenotype of heterozygote

TLS Online TPP Program

#Question id: 15697

#SCPH05 I Biotechnology

Which of the following does not describe PAM matrices?

TLS Online TPP Program

#Question id: 23149

#SCPH06 I Botany

In fluorescence microscopy a usually used fluorochrome that is fura-2 is sensitive to which ions?

TLS Online TPP Program

#Question id: 15703

#SCPH06 I Botany

Most commonly used carbon source in nutrient medium for plant tissue culture is