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1) NH2 represents the ................group of an amino acid a) Carboxyl b) Amine c) Variable d) Glycerol e) Fatty acid f) Hydrogen 2) COOH represents the ................group of an amino acid a) Variable b) Amine c) R d) Fatty acid e) Carboxyl f) Glycerol 3) How many naturally occuring amino acids are there? a) 202 b) 222 c) 2 d) 200 e) 22 f) 20 4) What bond is formed when two amino acids join together? a) Disulfide b) Peptide c) Glycosidic d) Ester e) Hydrogen f) Covalent 5) Two amino acids joined together are known as a) Monosaccharides b) Disaccharides c) Polypeptide d) Dipeptide e) Triglyceride f) Phospholipid 6) What type of protein is a sequence of amino acids in a polypeptide chain a) Tertiary structure b) Quaternary  c) Secondary d) Primary structure 7) What level of protein structure is shown by hydrogen bonding creating alpha helices/beta pleated sheets ? a) Tertiary structure b) Secondary c) Quaternary  d) Primary structure 8) How many essential amino acids are there? a) 10 b) 9 c) 15 d) 20 9) Which statement describes the tertiary structure of a protein?  a) linear sequence of amino acids b) assembly of multiple protein subunits into a functional complex c) three-dimensional arrangement of the entire protein molecule d) folding patterns like alpha helices and beta sheets 10) Which statement describes the quaternary structure of a protein? a) linear sequence of amino acids b) assembly of multiple protein subunits into a functional complex c) three-dimensional arrangement of the entire protein molecule d) folding patterns like alpha helices and beta sheets

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排行榜

測驗是一個開放式範本。它不會為排行榜生成分數。

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