How many distinct tripeptides can be made from the two amino acids: leucine and histidine? Each amino acid may be used more than once. number of distinct tripeptides:

The correct answer is "8".

Explanation:

The formula to calculate the number of peptides that can be synthesized from a certain number of different amino acids is given as follows:

"n^r"

where "n" is the number of amino acids and "r" is the length of the peptide.

In this case,"n" is 2, since the peptides are synthesized with 2 different amino acids: leucine and histidine; and "r" is 3, since the length of tripeptides is 3 amino acids.

Therefore, the number of distinct tripeptides is given by the formula "2^3", which is "8".

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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