Practice Questions

TLS Online TPP Program

#Question id: 34465

Which of the following statements ragarding amino acids are correct?

#XL - R Botany

Isoleucine & Threonine both has more than 1 chiral carbon.
Methionine,Cysteine both are responsible for the formation of disulfide bond due to their reduced thiol group.
Tyrosin have extra acid base group.
Pkr group of histidine deprotonated at pH 6.0

More Questions

#Question id: 160

#XL - T Zoology

Of the 20 standard amino acids, only ___________ is not optically active. The reason is that its side chain ___________.

#Question id: 161

#XL - T Zoology

Two amino acids of the standard 20 contain sulfur atoms. They are:

#Question id: 162

#XL - T Zoology

All of the amino acids that are found in proteins, except for proline, contain a(n):

#Question id: 163

#XL - T Zoology

Which of the following statements about cystine is correct?

#Question id: 164

#XL - T Zoology

The uncommon amino acid selenocysteine has an R group with the structure —CH2—SeH (pKa = 5). In an aqueous solution, pH = 7.0, selenocysteine would:

#Question id: 165

#XL - T Zoology

Amino acids are ampholytes because they can function as either a(n):