Practice Questions

TLS Online TPP Program

#Question id: 807

Which of the following forces can stabilize a normal DNA double-helix?

#Unit 1. Molecules and their Interaction Relevant to Biology

Base-stacking is a non-covalent interaction that occurs between the relatively hydrophobic bases in the interior of the helix.
Base-pairing is a non-covalent interaction that occurs between adjacent bases in the same strand of the DNA molecule.
The hydrophilic sugar-phosphate groups are on the exterior of the helix where they can interact with each other.
The deoxyribose rings form N-glycosidic bonds with the phosphate groups that link neighboring nucleotides.

More Questions

TLS Online TPP Program

#Question id: 1958

#Unit 4. Cell Communication and Cell Signaling

Both the eye and the respiratory tract are protected against infections by which of the following?

TLS Online TPP Program

#Question id: 31191

#Unit 4. Cell Communication and Cell Signaling

What is βTrCP and which functions it performs?

TLS Online TPP Program

#Question id: 23181

#Unit 13. Methods in Biology

__________ type of biosensors exist to measure the concentration and location of Ca2+ and the activation state of GTPase switch proteins.

TLS Online TPP Program

#Question id: 7492

#General Aptitude

Two and a quarter hour back, when seen is a mirror, the reflection of a wall clock without number markings seemed to show 1:30. What is the actual current time shown by the clock?

TLS Online TPP Program

#Question id: 172

#Unit 1. Molecules and their Interaction Relevant to Biology

Which amino acid is least likely to participate in acid-base catalysis?