exam questions Flashcards
differences between structure of cellulose molecule and glycogen molecule
cellulose: b-glucose monomers, straight chains, 1-4 glycosidic bond
glycogen - a-glucose monomers, branched & coiled, 1-4 and 1-6 glycosidic bonds
features of starch that make it a good storage molecule
insoluble so doesn’t affect osmosis
branched so can fit many molecules in smaller area
branched so more ends for faster enzyme action
test used to show presence of starch
iodine/potassium iodide test
o bond in cellulose molecule
glycosidic bond
contains only C,H,O
starch, glycogen, deoxyribose
made from amino acid monomers
DNA helicase
found in both animal cells and plant cells
deoxyribose, DNA helicase
spiral shape importance for funtion
takes up less space
features not in potato cell that are in prokaryotic cells
Loops of DNA,
plasmid
flagellum
tissue
group of cells with a similar structure and function working together
how are molecules of starch and cellulose similar
both polymers
joined by condensation
1-4 glycosidic bonds
insoluble
biological polymers in everything
protein nucleic acid enzyme DNA/RNA starch
how is cellulose adapted for its function
made from b-glucose joined by condensation 1-4 bond flipping over of alternate molecules hydrogen bonds link chains cellulose makes cell walls strong can resist turgor pressure bond difficult to break
