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TLS Online TPP Program

#Question id: 416

The immediate precursors of DNA and RNA synthesis in the cell all contain:

#Section 2: General Biology

  1. 3' triphosphates.

  2. 5' triphosphates.

  3. adenine.

  4. deoxyribose.

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TLS Online TPP Program

#Question id: 111

#Section 2: General Biology

Sterols are steroids which have
TLS Online TPP Program

#Question id: 27245

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following is incorrect?
TLS Online TPP Program

#Question id: 14982

#Section 6: Plant, Animal and Microbial Biotechnology

A very important function of the Golgi apparatus and endoplasmic reticulum is the synthesis of another organelle, the lysosome. This organelle is found in a variety of organisms such as—
1.Protozoa 
2. Some algae
3. Fungi
4. Plants 
5. Animals
In which of the above organisms lysosome is not found.
TLS Online TPP Program

#Question id: 14248

#Section 5: Bioprocess Engineering and Process Biotechnology

A steam steriliser is used to sterilise liquid medium for fermentation. The initial concentration of contaminating organisms is 108 per litre. For design purposes, the final acceptable level of contamination is usually taken to be 10-3cells; this corresponds to a risk that one batch in a thousand will remain contaminated even after the sterilisation process is complete. For how long should 1 m3 medium be treated if the temperature is 140⁰C ________________.

        To be safe, assume that the contaminants present are spores of Bacillus stearothermophilus, one of the most heat-resistant microorganisms known. For these spores the activation energy for thermal death is 283 kJ gmo1-1 and the Arrhenius constant is 1036.2 s-1

TLS Online TPP Program

#Question id: 12678

#General Aptitude

The length of the diagonal of a square is ‘a’ cm. Which of the following represents the area of the square (in sq. cm.) ?