Welcome to the Quiz!
This quiz contains 11 questions from a mix of 1 subtopics.
What is the primary structure of a protein?
the folding patterns like α-helices and β-pleated sheets
the overall 3D shape of the protein
the sequence of amino acids in the polypeptide chain
the interactions between R groups
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What happens to proteins when they undergo denaturation?
they gain a new function due to a change in shape
they lose their function due to a permanent change in shape
they become more stable and resistant to temperature changes
they break down into individual amino acids
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What is the purpose of developing agents like ninhydrin or ultraviolet light in thin layer chromatography?
to identify the amino acids
to make the amino acid spots visible
to separate the amino acids
to calculate the Rf values
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What type of bond forms between the amine group of one amino acid and the carboxyl group of another during protein synthesis?
ionic bond
hydrogen bond
peptide bond
disulfide bridge
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What molecule is released during the formation of a peptide bond between two amino acids?
ammonia
oxygen
water
carbon dioxide
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Which of the following is true about the tertiary structure of a protein?
it is formed by hydrogen bonds between peptide bonds
it refers to the overall 3D shape of the protein
it is the sequence of amino acids in the polypeptide chain
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What are the two main types of bonds that help maintain the secondary and tertiary structures of proteins?
peptide bonds and ionic bonds
disulfide bridges and covalent bonds
covalent bonds and hydrogen bonds
hydrogen bonds and disulfide bridges
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In thin layer chromatography, what determines the speed at which amino acids travel up the TLC plate?
their solubility in the solvent
their size
their charge
the strength of the developing agent
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What type of reaction occurs when polypeptide chains are broken back down into amino acids using hot aqueous acid?
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What type of reaction is involved in the formation of peptide bonds?
reduction
oxidation
condensation
hydrolysis
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What is the equation used to calculate the Rf value in thin layer chromatography?
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