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Critical thinking

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Please choose one of the questions below and provide your answer in a 1-2 page paper (not including reference page), double-spaced, and 12-point font.Critical Thinking Problem #3 OR Critical Thinking Problem #4 #3 A biochemist is trying to purify the enzyme hexokinase from a bacterium that normally grows in the Arctic Ocean at 5C. In thenext lab, a graduate student is trying to purify the same proteinfrom a bacterium that grows in the vent of a volcano at 98C. To maintain the structure of the protein from the Arctic bacterium, the first biochemist must carry out all her purification procedures at refrigerator temperatures. The second biochemist must perform all his experiments in a warm room incubator. In molecular terms, explain why the same kind of enzyme from organisms with different optimal temperatures for growth canhave such different thermal properties.#4 The & -keratin of hair is rich in the amino acid cysteine. The location of these cysteines in the protein chain is geneticallydetermined; as a result of the location of the cysteines in the protein, a person may have curly, wavy, or straight hair. How can the location of cysteines in & -keratin result in these different styles of hair? Propose a hypothesis to explain how a “perm” causes straight hair to become curly.

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