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TLS Online TPP Program

#Question id: 783

Which of the statements below is FALSE?

#XL - T Zoology

  1. Histone variants are often inserted into already formed chromatin.

  2. Several different MIR genes encode the same miRNA.

  3. Trans-splicing accounts for 1% of nematode mRNAs.

  4. Every MIR gene encodes a unique miRNA.

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TLS Online TPP Program

#Question id: 181

#XL - T Zoology

Titration of valine by a strong base, for example NaOH, reveals two pK’s. The titration reaction occurring at pK2 (pK2 = 9.62) is:
TLS Online TPP Program

#Question id: 182

#XL - T Zoology

Which amino acid is least likely to participate in acid-base catalysis?
TLS Online TPP Program

#Question id: 183

#XL - T Zoology

At pH 7.0, converting a glutamic acid to gamma-carboxyglutamate, will have what effect on the overall charge of the protein containing it?
TLS Online TPP Program

#Question id: 184

#XL - T Zoology

What is the approximate charge difference between glutamic acid and alpha-ketoglutarate at pH 9.5?
TLS Online TPP Program

#Question id: 185

#XL - T Zoology

Match the amino acids with their correct functional group:

1. Indole

i. Histidine

2. Imidazole

ii. Tryptophan

3. Thiol

iii. Cysteine

4. Pyrrolidine

iv. Proline


TLS Online TPP Program

#Question id: 186

#XL - T Zoology

What will be the net charge on given peptide at pH 5?