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TLS Online TPP Program

#Question id: 2737

The linking number (Lk) of a closed-circular, double-stranded DNA molecule is changed by:

#SCPH05 I Biotechnology

  1. breaking a strand, unwinding or rewinding the DNA, then rejoining it.

  2. breaking all hydrogen bonds in the DNA.

  3. supercoiling without the breaking of any phosphodiester bonds.

  4. underwinding without the breaking of any phosphodiester bonds.

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TLS Online TPP Program

#Question id: 24442

#SCPH01 Biochemistry

Match the following Column I with Column II 

Column I

Column II

A. PR segment

i. Plateau portion of the ventricular action

potential

B. PR interval

ii. Conduction through atrioventricular node

C. ST segment

iii. The time from initial depolarization of the

atria to initial depolarization of the ventricles

D. ST interval

iv. An isoelectric portion of the QT interval

TLS Online TPP Program

#Question id: 1586

#SCPH01 Biochemistry

In which of the cases would the precaution likely be taken to give the mother anti-Rh antibodies before delivering her baby?
TLS Online TPP Program

#Question id: 3610

#SCPH12 I Genetics

If the genotype consists of only one type of allele. It is called
TLS Online TPP Program

#Question id: 3925

#SCPH28 | Zoology

Constitutive genes
TLS Online TPP Program

#Question id: 14964

#SCPH05 I Biotechnology

The resistance of the tubercle bacillus to various factors is probably due to its