Proteins
Quiz by Hazlina Zakeri
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17 questions
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- Q1Which of the following is NOT one of the four main elements of an amino acid?HydrogenNitrogenCarbonPhosphate30s
- Q2Proteins are made up ofDifferent combinations of RNA and amino acidsLong chains of amino acidsLong chains of RNAShort strands of amino acids30s
- Q3Why are proteins important?All of the answersProteins provide all sorts of functionsEvery cell in the human body uses proteinsProteins are essential for survival30s
- Q4A bond between amino acids is called a(n) _____ bond.esterpeptidehydrogenionic30s
- Q5All proteins have a Quaternary structure.TrueFalseNeither30s
- Q6A tripeptide has3 amino acids and 2 peptide bonds3 amino acids and 3 peptide bonds3 amino acids and 1 peptide bond3 amino acids and 4 peptide bonds30s
- Q7Which part of the amino acid gives it uniqueness?Carboxyl groupSide chainAmino groupCentral carbon30s
- Q8When a protein denatured, which organizational structure is NOT affected?QuartenarySecondaryTertiaryPrimary30s
- Q9This molecule belongs to which class of amino acids?BasicHydroxyl-containingCyclicAliphatic30s
- Q10Which type of bonding is responsible for the secondary structure of proteins?Disulphide bridges between cysteine residues.Salt bridges between charged side chains of amino acids.Hydrogen bonding between the C=O and N-H groups of peptide bonds.Peptide bonds between amino acids.30s
- Q11Which term below best defines the 'quaternary structure' of a protein?The arrangement of two or more polypeptide subunits into a single functional complexThe folding of the polypeptide backbone in three-dimensional space.The interaction of amino acid side chains.The sequence of amino acids in a polypeptide chain.30s
- Q12Which of the following amino acids is mostly likely to disrupt an alpha helix?ProlineValineIsoleucineLeucine30s
- Q13Oxidation of two cysteines will form a(an)ionic bridgedisulfide bridgekuala nerus bridgesalt bridge30s
- Q14The primary structure of protein representssub unit structure of protein3-dimensional structure of proteinhelical structure of proteinLinear sequence of amino acids joined by peptide bond30s
- Q15This molecular structure belongs to which amino acid?HistidineTyrosineTryptophanIsoleucine30s
