Proteins, Polysaccharides and Lipids Flashcards

1
Q

alpha helix

A

song, rod like and found in strong, stretchy proteins e.g keratin
stabilised by hydrogen bonds

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2
Q

beta sheets

A

zig zag chains that can be parallel or anti-parallel

stabilised by hydrogen bonds

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3
Q

triple helix

A

found in collagen only
very strong and water insoluble
3 polypeptides wound around each other - rope like

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4
Q

what amino acids are in abundance in collagen

A

glycine, proline and hydroxyproline

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5
Q

what amino acid is the essential for making collagen

A

glycine due to its R group being a single hydrogen atom

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6
Q

fibrous proteins

A

insoluble and unreactive

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7
Q

globular proteins

A

spherical, soluble in water

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8
Q

myoglobin

A

globular protein used for oxygen storage in muscles

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9
Q

haemoglobin

A

oxygen transport

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10
Q

protein monomer

A

amino acids

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11
Q

polysaccharide monomers

A

sugars (monosaccharides)

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12
Q

polysaccharide functions and examples

A

storage - glycogen, starch

structure - cellulose, peptidoglycan

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13
Q

2 main types of proteins

A

fibrous

globular

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14
Q

3 protein functions and examples

A

enzymes - amylase
transport - haemoglobin
structure - collagen

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15
Q

aldoses vs ketoses (monosaccharides)

A

aldoses - contain aldehyde group - CHO

ketoses - contain ketone group - CO

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16
Q

by what reaction do monosaccharides join

A

dehydration

17
Q

lipid monomers

A

fatty acids

18
Q

2 main functions of lipids

A

storage , membrane structure