If an atom has 42 protons and 36 neutrons, how many electrons will it have?

2 answers:

6 0

If an atom is in its natural state the number of protons will equal the number of electrons. This is because an atom naturally wants to be "even" and since protons have a positive charge, the atom will have the same number of electrons (negative) so that they cancel each other out.

Simora [160]3 years ago

4 0

The quick answer is 42 electrons would be required however, the question has a kicker in it, there should be between 42 and 50 neutrons there also if the atom is to be stable. with a marginal number of neutrons like 36 atom will be highly unstable and most likely self distruct .

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Mrna,amino acids,type of mutation

Leya [2.2K]

Answer:

mRNA: 3' AUG-AAU-GCU-GCC-GGU-GA-5'

amino acids : methionine, asparagine, alanine, arginine, proline

type of mutation: deletion, missense

Explanation:

The mRNA sequence is complementary to the DNA sequence. A always pairs with T, C always pairs with G. Except this is an RNA sequence not a DNA sequence, so T is replaced with U.

The mRNA sequence is translated into an amino acid sequence based on the triplet code. The triplet code for this sequence is shown in the attached picture. Each triplet signifies a specific amino acid. The codon can be identified from the table and placed in sequence. We can see that the new DNA strand has caused a new amino acid sequence. It has also left us with an incomplete sequence, as GA cannot signify an amino acid.

The type of mutation is a single base deletion. We can see that the base C is missing from the 9th amino acid in the original strand. As you can see, this has an ongoing affect on all the bases in the rest of the sequence, as it changes the way the sequence is organised into codons. This results in a missense mutation.