Practice Questions

TLS Online TPP Program

#Question id: 787

Which of the following statement is INCORRECT with respect to the structure of DNA?

#SCPH06 I Botany

Six adenosines in a row in a DNA helix produce a bend of about 18 degrees.
DNA was first isolated and characterized by Friedrich Miescher who called the phosphorus-containing substance “nuclein.”
It is the pentoses that define the identity of a nucleic acid not the nitrogenous bases.
The Z-DNA tracts do not play any role in regulating the expression of some genes or in genetic recombination.

More Questions

TLS Online TPP Program

#Question id: 5262

#SCPH28 | Zoology

Which of the following characteristics is not true of a plasmid?

TLS Online TPP Program

#Question id: 1602

#SCPH05 I Biotechnology

Following are some of the characteristics of MHC 1 and MHC 2 both , except

TLS Online TPP Program

#Question id: 4133

#SCPH28 | Zoology

Which of the following statements about aminoacyl-tRNA synthetases is false?

TLS Online TPP Program

#Question id: 4129

#SCPH06 I Botany

Which of the following statements about the tRNA that normally accepts phenylalanine is false? (mRNA codons for phenylalanine are UUU and UUC.)

TLS Online TPP Program

#Question id: 14116

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

Which of the following statements are CORRECT when a protein sequence database is searched using the BLAST algorithm?

P. A larger E-value indicates higher sequence similarity

Q. E-value < 10^-10 indicates sequence homology

R. A higher BLAST score indicates higher sequence similarity

S. E-value > 10^10 indicates sequence homology