In prokaryotes, DNA replication begins at a single site that is rich in AT nucleotide sequence, where two strands unwind and separate. This ATP dependent process catalyzed by a protein

TLS Online TPP Program

#Question id: 3879

#SCPH01 Biochemistry

Which of the following is not usually essential for the catalytic activity of ribozymes?

TLS Online TPP Program

#Question id: 4313

#SCPH01 Biochemistry

Which of the following statements best describes the characteristics of siRNA?

TLS Online TPP Program

#Question id: 18645

#SCPH06 I Botany

SDS PAGE separate molecules by size because the presence of SDS (sodium dodecyl sulphate) denatures the protein removing 2˚, 3˚ and 4˚ structures (they assume a linear chain) and the SDS coats the molecules giving them a uniform charge/mass ratio. In an experiment (SDS-PAGE) with a discontinuous buffer system following band pattern is obtained 

   

Choose the correct statement regarding this band pattern

TLS Online TPP Program

#Question id: 5329

#SCPH28 | Zoology

A sex-linked recessive allele c produces a red-green colorblindness in humans. A normal woman whose father was colorblind marries a colorblind man. What are the chances that the second child from this marriage will be a colorblind boy?

TLS Online TPP Program

#Question id: 10985

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

What is the membrane potential (threshold level) at which the S-A node discharges?