Question

Which of the following shows all of the tripeptides that can be formed from one molecule each of lysine (Lys), threonine (Thr), and hisitidine (His)? Which of the following shows all of the tripeptides that can be formed from one molecule each of lysine (Lys), threonine (Thr), and hisitidine (His)?

LysThrHis, LysHisThr, HisLysThr LysThrHis LysThrHis, LysHisThr, HisThrLys, HisLysThr, ThrLysHis, ThrHisLys LysThrHis, LysHisThr, HisLysThr, ThrHisLys LysThrHis and LysHisThr

Answer 1

LysThrHis, LysHisThr, HisThrLys, HisLysThr, ThrLysHis, ThrHisLys

Step-by-step explanation:

These are amino acids Lysine, Threonine and Histidine involved in the formation of a tripeptide. The three amino acids can form a tripeptide in six different combinations. Arranging them, starting from Lysine (Lys) as in the question will give two different combinations, then starting with the other two amino acids will produce two different combinations each as well

This gives us a total of 6 possible arrangements if the three amino acids are used once to form a tripeptide.

1. Lys-His-Thr

2. Lys-Thr-His

3. His-Lys-Thr

4. His-Thr-Lys

5. Thr-Lys-His

6. Thr-His-Lys

Answer 2

LysThrHis, LysHisThr, HisLysThr, HisThrLys, ThrLysHis, ThrHisLys

Step-by-step explanation:

You easily combine the options for the tripeptide if you made a chart

Also you can calculate the posibilities with the factorial function in the calculatio (x!): 3*2*1 (you can multiplicate the number of amoniacids by the followed numbers until 1) = 6