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Questions and Answers
What is the purpose of using inorganic salt, organic solvent, or heat in protein testing?
What is the purpose of using inorganic salt, organic solvent, or heat in protein testing?
- To maintain the primary structure of the molecule (correct)
- To enhance the color development in the test
- To break down the primary chemical bonds
- To alter the primary structure of the molecule
Why won't free amino acids give a positive result with the biuret test?
Why won't free amino acids give a positive result with the biuret test?
- They lack the necessary chemical elements
- They do not react with inorganic salts
- They degrade under heat
- They have no peptide bonds (correct)
How many amino acids bonded together by peptide bonds are needed to respond positively to the biuret test?
How many amino acids bonded together by peptide bonds are needed to respond positively to the biuret test?
- 3
- 4 (correct)
- 1
- 2
After heating albumin at high temperature, is it still biologically active?
After heating albumin at high temperature, is it still biologically active?
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Can the salting out method be used in fractionating mixtures of proteins?
Can the salting out method be used in fractionating mixtures of proteins?
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Which chemical process is associated with cleavage of primary chemical bonds in proteins?
Which chemical process is associated with cleavage of primary chemical bonds in proteins?
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What effect does boiling water have on the structure of proteins?
What effect does boiling water have on the structure of proteins?
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