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solong [7]
2 years ago
13

A researcher is trying to culture mouse embryonic stem cells, and is providing them with glucose (sugar) as a food source. In or

der for these cells to survive in culture, he must also add a mixture of essential amino acids to the culture medium. These essential amino acids are _____.
Chemistry
1 answer:
Semmy [17]2 years ago
8 0

Answer:

It is a fact that there are nine essential amino acids, which are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.

However, he needs to add at least twelve essential amino-acids to the culture for the cells to survive. They are: arginine, cystine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, histidine, tyrosine and valine.

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The relation between the shielding and effective nuclear charge is given as

Z_{eff} = Z -S

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wheres denote shielding

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