举一反三
- A chain of 5 amino acids contains how many peptide bonds ?</p></p>
- The spatial conformation of a protein mainly depends on A: α-helix and β-sheet B: the sequence of amino acids in polypeptide chain C: disulfide bonds in polypeptide chain D: hydrophobic effects in polypeptide chain E: hydrogen bonds in polypeptide chain
- The correct descriptions about peptide are A: A compound formed of two or more amino acids linked by peptide bonds. B: The amino acids that make up the peptides are residues. C: The peptide chain has amino terminus and carboxyl terminus. D: Oligopeptides less than 10 amino acids don’t have function.
- Proteins are natural polymers of amino acids with primary structure, secondary structure, tertiary structure and quaternary structure.
- The primary structure of a food protein molecule refers to a linear sequence of amino acids connected by hydrogen bonding.
内容
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The primary structure of a protein is the sequence of amino acids.（）
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The structure of amino acids consists of an amino group, a carboxyl group, a hydrogen atom and an R group.
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The spacial conformation of protein is mainly determined by: () A: the<br/>sequence of amino acid B: α-helix<br/>and β-pleated sheets C: the<br/>side chain of amino acid in the peptide D: peptide<br/>bond in the peptide chain E: the<br/>location of disulfide bond in the peptide chain
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The primary<br/>structure of a protein is mostly maintained by () A: Peptide bond B: Hydrogen bond C: lonic bond D: Hydrophobic bonds E: Van der Waals<br/>interactions
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Proteins are large biological molecules consist of which of the following amino acids?: D-α-amino acids|D-β-amino acids|L- and D-β-amino acids|L-α-amino acids|L-β-amino acids