Protein sequencing 2. Determine the sequence of a peptide consisting of 14 amino acids on the basis of the following data.

Amino acid composition: (4S,2L, F,G, I,K, M,T, W,Y)

N-terminal analysis: S

Carboxypeptidase digestion: L

Trypsin digestion: (3S,2L, F,I, M,T, W) (G, K,S, Y)

Chymotrypsin digestion: (F, I,S) (G, K,L) (L, S) (M, T) (S, W) (S, Y)

N-terminal analysis of (F, I,S) peptide: S

Cyanogen bromide treatment: (2S, F,G, I,K, L,M*,T, Y) (2S, L,W)

M*, methionine detected as homoserine

there are 35 white marbles

step-by-step explanation:

y- yellow marbles

4y + 5 = 45

subtract 5 from both sides

4y = 40

divide for from both sides

y = 10

plug in 10 to get 40 yellow marbles then subtract by 5 to get 35 marbles

thus there are only 10 yellow marbles

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.

want or the answer