Practice Questions

TLS Online TPP Program

#Question id: 179

The average molecular weight of the 20 standard amino acids is 138, but biochemists use 110 when estimating the number of amino acids in a protein of known molecular weight. Why?

#Unit 1. Molecules and their Interaction Relevant to Biology

The number 110 is based on the fact that the average molecular weight of a protein is 110,000 with an average of 1,000 amino acids.
The number 110 reflects the higher proportion of small amino acids in proteins, as well as the loss of water when the peptide bond forms.
The number 110 reflects the number of amino acids found in the typical small protein, and only small proteins have their molecular weight estimated this way.
The number 110 takes into account the relatively small size of nonstandard amino acids.

More Questions

TLS Online TPP Program

#Question id: 33378

#Unit 1. Molecules and their Interaction Relevant to Biology

The α helices have rotation of

TLS Online TPP Program

#Question id: 33379

#Unit 1. Molecules and their Interaction Relevant to Biology

Which amino acid is often observed at the C-cap & N cap both positions

TLS Online TPP Program

#Question id: 33380

#Unit 1. Molecules and their Interaction Relevant to Biology

Which pair of amino acids forms homopolymers of alpha helix

TLS Online TPP Program

#Question id: 33381

#Unit 1. Molecules and their Interaction Relevant to Biology

poly(Pro) I exists as a

TLS Online TPP Program

#Question id: 33382

#Unit 1. Molecules and their Interaction Relevant to Biology

What is correct order of X ray diffraction method to analyze helix structure

TLS Online TPP Program

#Question id: 33383

#Unit 1. Molecules and their Interaction Relevant to Biology

What is the length of a polypeptide with 80 amino acid residues in a single contiguous helix?