Explanation:
When insulating materials rub against each other, they may become electrically charged . Electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. The material that gains electrons becomes negatively charged. The material that loses electrons is left with a positive charge.
In the blosum-62 substitution matrix, a large positive score corresponds to substitution that occurs frequently.
BLOSUM-62 is used to account for the type of substitution when comparing sequences. To identify the problem the first approach is examining the substitutions that have actually taken place in evolutionary related proteins.
From an examination of appropriately aligned sequences, substitution matrices have been deduced. A substitution matrix describes a scoring system for the replacement of any amino acid with each of the other 19 amino acids.
In these matrices, a large positive score corresponds to a substitution that only occurs relatively frequently, whereas a large negative score corresponds to a substitution that only occurs rarely. A commonly used matrix, the BLOSUM-62 stands for Blocks of amino acid substitution matrix.
Each column in the matrix represents one of the 20 amino acids, whereas the position of the single letter codes within each column specify the score for the corresponding substitution.
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Answer:
None
Explanation:
Isomers are organic compounds that have the same molecular formula but different structural formula. What this mean is that these isomers have different arrangement of their atoms. Hence, they belong to different homologous series and exhibit different chemical properties. Hence, it is enough to access whether two different compounds are isomeric using their chemical formula as a yardstick.
Now let us look at our answers. We can see that none of the pairs have the same molecular formula
1Na3PO4 + 3HCl -> 3NaCl + H3PO4
Answer:
A = The central core and is composed of protons and neutrons.
Explanation:
An atom consist of electrons, protons and neutrons. The neutrons and protons are present inside the nucleus, which is central core of atom and have positive charge. While electron is present out side the nucleus.
All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons.
The electron is subatomic particle that revolve around outside the nucleus and has negligible mass. It has a negative charge.
Symbol= e-
Mass= 9.10938356×10-31 Kg
It was discovered by j. j. Thomson in 1897 during the study of cathode ray properties.
While neutron and proton are present inside the nucleus. Proton has positive charge while neutron is electrically neutral. Proton is discovered by Rutherford while neutron is discovered by James Chadwick in 1932.
Symbol of proton= P+
Symbol of neutron= n0
Mass of proton=1.672623×10-27 Kg
Mass of neutron=1.674929×10-27 Kg