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Edexcel Sulters-Nuffield A Level Biology: Topic 2 question papers with solutions The secondary structure of a protein is held together by many H-bonds to form either an alpha-helix or a beta-pleated sheet. How do hydrogen bonds form between parts of the$10.49
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Edexcel Sulters-Nuffield A Level Biology: Topic 2 question papers with solutions The secondary structure of a protein is held together by many H-bonds to form either an alpha-helix or a beta-pleated sheet. How do hydrogen bonds form between parts of the
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Edexcel Sulters-Nuffield A Level Biology: Topic
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Edexcel Sulters-Nuffield A Level Biology: Topic
Edexcel Sulters-Nuffield A Level Biology: Topic 2 question papers with solutions
The secondary structure of a protein is held together by many H-bonds to form either an alpha-helix or a beta-pleated sheet. How do hydrogen bonds form between parts of the chain, stabilizing the structure? - Answer A...
Edexcel Sulters-Nuffield A Level
Biology: Topic 2 question
papers with solutions
The secondary structure of a protein is held together by many
H-bonds to form either an alpha-helix or a beta-pleated sheet.
How do hydrogen bonds form between parts of the chain,
stabilizing the structure? - Answer Amino and carboxylic acid
groups carry small amounts of charge. The charge is slightly
negative on the CO of the carboxyl group and slightly positive of
the NH of the amino group, resulting in H-bonds forming
between parts of the chain; stabilizing the structure.
What bonds hold the tertiary structure together? - Answer H-
bonds, ionic bonds between ionised R groups and disulfide
, bonds between R groups containing -SH groups all between R
groups.
Conjugated protein (+ give an example) - Answer A protein that
have another chemical group associated with their polypeptide
chain(s) (e.g. haemoglobin is associated with an iron-containing
group).
Disulfide and ionic bonds are much s_______ than H-bonds but
are very s________ to c______ in pH. - Answer Disulfide and
ionic bonds are much stronger than H-bonds but are very
sensitive to changes in pH.
Features of a globular protein - Answer Polypeptide chain
folded into compact spherical shape; soluble due to polar, or
hydrophilic, amino acids arranged on the outside and the non-
polar, or hydrophobic, amino acids on the inside of the three-
dimensional shape.
Features of collagen, a fibrous protein. - Answer Insoluble.
Alpha-helices (polypeptide chains) wind around each other,
forming a rope-like strand joined by cross-links via H-bonds.
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