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TLS Online TPP Program

#Question id: 334

Which of the following statements about hydrogen bonding is not true?

#SCPH05 I Biotechnology

  1. In liquid water, the average water molecule forms hydrogen bonds with three to four other water molecules.

  2. Hydrogen bonds account for the anomalously high boiling point of water.

  3. Individual hydrogen bonds in liquid water exist for many seconds and sometimes for minutes.

  4. The strength of a hydrogen bond depends on the linearity of the three atoms involved in the bond.

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TLS Online TPP Program

#Question id: 20983

#SCPH01 Biochemistry

Which is considered as less recalcitrant out of the BTEX compounds, and of lesser regulatory concern?
1. Xylene
2. Ethylbenzene
3. Toluene
4. Benzene
Which of the below combinations are correct?
TLS Online TPP Program

#Question id: 2714

#SCPH05 I Biotechnology

HAT enzymes react with the side-chain of lysine to form the following structure. What effect will the HAT enzymes have on histones?
TLS Online TPP Program

#Question id: 9188

#SCPH06 I Botany

Which of the following are examples or parts of plantsʹ systemic acquired resistance against infection?
TLS Online TPP Program

#Question id: 10557

#SCPH06 I Botany

The attraction of water to a solid phase such as a cell wall or glass surface known as
TLS Online TPP Program

#Question id: 1729

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

When a resting naive T-cell engages its specific MHC–peptide complex displayed on the surface of a fibroblast, it: