Practice Questions

TLS Online TPP Program

#Question id: 678

Which is not true about β-sheets?

#SCPH28 | Zoology

The side-chains of all amino acids point to the same side of the sheet.
The polypeptide chains in the sheet are nearly fully extended.
The range of allowed phi and psi angles is broader than for those in the α-helix.
In antiparallel sheets the hydrogen bonds between adjacent strands are nearly perpendicular to the backbones of the strands.

More Questions

TLS Online TPP Program

#Question id: 15879

#SCPH05 I Biotechnology

During which Phase lasts about 3-4 cell generations (the time taken for doubling of cell number), and the duration of a cell generation may vary from 22-48 hr, depending mainly on the plant species?

TLS Online TPP Program

#Question id: 5557

#SCPH06 I Botany

The plasma membrane of the sea urchin egg ________.

TLS Online TPP Program

#Question id: 2128

#SCPH28 | Zoology

The fluidity of a lipid bilayer will be increased by:

TLS Online TPP Program

#Question id: 2954

#SCPH28 | Zoology

Cyclin concentrations are highest during which periods of the cell cycle?

TLS Online TPP Program

#Question id: 2714

#SCPH05 I Biotechnology

HAT enzymes react with the side-chain of lysine to form the following structure. What effect will the HAT enzymes have on histones?