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level: Proteins

Questions and Answers List

level questions: Proteins

QuestionAnswer
what are proteinsnatural polymers made up of amino acid units
what two functional group does each amino acid havean amino group (-NH2) carboxyl group (-COOH)
what are essential amino acidsamino acids that cannot be made by our bodies and must be obtained from dietary proteins
can amino acids be stored by the body?no
how do two amino acids joinby eliminating a molecule of water between them in a condensation reaction
what is formed when two amino acids joina dipeptide
what is the structure linking amino acid units together calledamide link / peptide link
what does a peptide link look like-CONH-
how is a peptide link formedwhen the carboxyl group of one amino acid molecule reacts with the amino group of another amino acid molecule
what are enzymesproteins which act as biological catalysts
what happens to proteins once eatenthey are broken down by digestion to form the amino acids that make up that protein by hydrolysis
why is the N-H bond in amino acids and proteins significantit allows hydrogen bonding to take place
what is the purpose of hydrogen bonding between protein moleculesit allows long protein strands to curl into different shapes
what happens when a protein is heatedsome or all of the hydrogen bonds are broken, leading to a change in shape; the enzyme is denatured