Proteins, Polysaccharides and Lipids Flashcards
alpha helix
song, rod like and found in strong, stretchy proteins e.g keratin
stabilised by hydrogen bonds
beta sheets
zig zag chains that can be parallel or anti-parallel
stabilised by hydrogen bonds
triple helix
found in collagen only
very strong and water insoluble
3 polypeptides wound around each other - rope like
what amino acids are in abundance in collagen
glycine, proline and hydroxyproline
what amino acid is the essential for making collagen
glycine due to its R group being a single hydrogen atom
fibrous proteins
insoluble and unreactive
globular proteins
spherical, soluble in water
myoglobin
globular protein used for oxygen storage in muscles
haemoglobin
oxygen transport
protein monomer
amino acids
polysaccharide monomers
sugars (monosaccharides)
polysaccharide functions and examples
storage - glycogen, starch
structure - cellulose, peptidoglycan
2 main types of proteins
fibrous
globular
3 protein functions and examples
enzymes - amylase
transport - haemoglobin
structure - collagen
aldoses vs ketoses (monosaccharides)
aldoses - contain aldehyde group - CHO
ketoses - contain ketone group - CO