realizată de hanin zaymmmm 8 ani în urmă
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R
COOH
CH
NH2
often
phosphorus
sulphur
nitrogen
hydrogen
oxygen
carbon
Negative result: solution remains blue
Positive result: solution turns violet
reduces rate of water evaporation & heat loss
oily secretion by sebaceous glands in skin forms thin layer over surface
related hormones
sex hormones
vitamins
3 fatty acid molecule
1 glycerol
unsaturated fats: -
saturated fats: CnH2nO2
carbon, hydrogen, oxygen
less O:H than carbohydrates
Negative result: remains clear & colourless
Positive result: cloudy white emulsion form
photosynthesis
hydrolysis
fats
amino acids
cellulose cell walls
glycogen
cellulose
starch
sucrose
lactose
maltose
general formula: CmH2nOn
galactose
fructose
glucose
Description: add a few drops of iodine to a sample
negative result: solution remains brown/yellow
positive result: solution turns blue black
Description: add an equal volume of Benedict's solution shake and then heat in a beaker of hot water
negative result: solution remains blue
positive result: solution turns orange/yellow/brick-red