Practice Questions

TLS Online TPP Program

#Question id: 787

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

#XL - T Zoology

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: 28125

#XL - U Food Technology

The degree in Fahrenheit required to reduce the thermal death time tenfold is:

TLS Online TPP Program

#Question id: 2113

#XL - T Zoology

Why are lipids and proteins free to move laterally in membranes?

TLS Online TPP Program

#Question id: 19944

#XL - P Chemistry

Which of the following statements about quantum numbers is wrong?

TLS Online TPP Program

#Question id: 20085

#XL - P Chemistry

According to which group, hydrogen bond is form in protein molecule present in musecls of living organism ?

TLS Online TPP Program

#Question id: 14828

#XL - S Microbiology

Pili are usually longer than fimbriae and number only one or two per cell. Pili are involved in motility and DNA transfer. The type of motility, called

2. Somersaulting

3. Twitching motility

4. Gliding motility

Which combination from the following is correct?