extra tonight Flashcards
starch adapt
insoluble - doesn’t affect wp
water doesn’t enter by osmosis
swells
good for storage
stores glucose as starch
Starch structure
2 polyscharides
alpha glucose
amylopectin - long branded chain of alpha glucose
side branches - enzymes break down molecules to get glucosidic bonds easily
Glucose resale quickly
Amylase
long unbranded chain of alpha glucose
coiled structure
compact - good for structure - fit more in small space
Glycogen adap
large molecule - long chain - doesn’t lead cell - contains large number of glucose units
Bracned chain
Easily removes glucose
Cellulose
long unbranded chain of Beta glucose
from strong fibres microfibrils
linked via weak hydrogen bonds
glycogen formation and starch formation
by condenstartion of alpha glucose
Cellulose. formation
condensation on beta glycose
Amino acid structure
amine group and carboxylic group
primary structure of protein
Encoded in AA
Sequence of AA and type of aa in polypeptide chain
by sequence of codons on MRNA
Secondary strcutre of proteins
Hydrogen bonds form between 2 aa
coils
alpha helix or beta plotted sheet
tertiary structure of proteins
more bonds form between different parts of polypeptide chain - 3D structure formed by further folding of polypeptide
disulphide bridges
ionic bonds
hydrogen bonds
Quaternary structure
Lots of poylpeptide chains formed
sequence of AA determined by
sequence of genetic code on mRNA being translated in ribosomes
test for protein
biuret test
confirms presence of peptide bond
NAOH
copper sulfate
blue to purple
globular protein
spherical and compact
water soluble
metabolic processses used for
fibrous protein
form long chains or fibres
insoluble in water
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