Practice Questions

TLS Online TPP Program

#Question id: 760

Which force can stabilize a DNA double-helix?

#Unit 1. Molecules and their Interaction Relevant to Biology

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.

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TLS Online TPP Program

#Question id: 3018

#Unit 2. Cellular Organization

In the growth curve of a bacteria population, the bacteria are rapidly increasing in number in the

TLS Online TPP Program

#Question id: 10358

#Unit 6. System Physiology – Plant

Which of the following essential micronutrients is associated with nitrate reductase enzyme found in higher plants?

TLS Online TPP Program

#Question id: 686

#Unit 1. Molecules and their Interaction Relevant to Biology

Which is not an example of an oligomeric protein?

TLS Online TPP Program

#Question id: 19346

#Unit 12. Applied Biology

Which one of the following measures changes in heat?

TLS Online TPP Program

#Question id: 2936

#Unit 2. Cellular Organization

The stable attachment of sister kinetochores to microtubules emanating from opposite spindle poles is called: