Thiamine (vitamin B1) deficiency diseases have a lower prevalence now than in the past. However, they are seen as beriberi in some developing regions and in regions of crisis, and as Wernicke–Korsakoff syndrome in some alcoholics. One type of beriberi causes neurological symptoms such as weakness, fatigue, and loss of sensations. What is a possible explanation for these symptoms? A. Thiamine is necessary for gluconeogenesis.
B. Hexokinase requires thiamine.
C. Coenzymes of the pentose phosphate pathway require thiamine as a precursor.
D. Thiamine is a precursor to the cofactor for succinyl coenzyme A synthetase.
E. The brain uses glucose, metabolized in glycolysis and the citric acid cycle, as its main energy source.

a is the answer to this question

explanation:

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.