https://padlet.com/matildepetri/vlv554q50rc354qc en-us 2023-03-09 12:53:59 UTC 2023-03-13 09:04:26 UTC hello@padlet.com https://images.fineartamerica.com/images-medium-large-5/2-vitamin-b3-nicotinic-acid-molecule-laguna-designscience-photo-library.jpg matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510264353 2023-03-09 13:16:58 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510264353 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510264885 carbohydrates ]]> 2023-03-09 13:17:23 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510264885 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510264984 fats]]> 2023-03-09 13:17:28 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510264984 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510266761 proteins]]> 2023-03-09 13:18:49 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510266761 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510267738 composed of the elements carbon, hydrogen, and oxygen in a ratio of 1:2:1]]> 2023-03-09 13:19:31 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510267738 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510268869 composed of the elements carbon, hydrogen, and oxygen]]> 2023-03-09 13:20:20 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510268869 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510269294 contain carbon, hydrogen and oxygen, but also nitrogen and small amount of sulfur 

]]> 2023-03-09 13:20:39 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510269294 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510273320 2023-03-09 13:23:31 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510273320 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510273828 starch and glycogen from glucose]]> 2023-03-09 13:23:56 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510273828 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510274287 proteins from amino acids]]> 2023-03-09 13:24:12 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510274287 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510274705 fats and oils from fatty acids and glycerol]]> 2023-03-09 13:24:30 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510274705 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510276428 Starch and glycogen are both polysaccharides composed of glucose molecules joined together in a long chain

]]> 2023-03-09 13:25:45 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510276428 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510278020 protein molecules are made of long chains of smaller molecules called amino acids joined end to end]]> 2023-03-09 13:26:58 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510278020 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510280009 a fat molecule is made of four smaller molecules joined together. One of these is glycerol, attached to it there are three long molecules called fatty acids]]> 2023-03-09 13:28:23 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510280009 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510285684 2023-03-09 13:32:20 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510285684 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510287741 iodine solution to test for starch]]> 2023-03-09 13:33:48 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510287741 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510288079 Benedict’s solution to test for reducing sugars]]> 2023-03-09 13:34:04 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510288079 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510288389 biuret test for proteins]]> 2023-03-09 13:34:18 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510288389 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510288753 ethanol emulsion test for fats and oils]]> 2023-03-09 13:34:34 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510288753 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510292875 detect the presence of starch in a sample. 
contain starch  -> reacts with the starch molecules to form a blu-black color
don’t contain starch -> remains orange brown ]]> 2023-03-09 13:37:34 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510292875 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510375444 we can test for the presence of sugars by adding Benedict's solution to a food, and heating it.
contain reducing sugar -> brick-red colour
no reducing sugar -> remains blue]]> 2023-03-09 14:27:50 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510375444 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510382126 the test for proteins is called biuret test. This involves mixing the food in water, and then adding dilute copper sulfate solution. Then dilute potassium hydroxide solution is gently added.
contain protein -> purple colour 
don’t contain protein -> stays blue]]> 2023-03-09 14:31:55 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510382126 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510390318 dissolve fats in ethanol and than put the emulsion in water, if there is any fat in the emulsion than it breaks up into millions of tiny droplets]]> 2023-03-09 14:37:12 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510390318 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510391883 2023-03-09 14:38:03 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510391883 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510408617 is really important for metabolic reactions that can only take place if the chemicals which are reacting are dissolved in water]]> 2023-03-09 14:48:17 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510408617 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510409241 plasma, the liquid part of blood, contains a lot of water, so that substances like glucose can dissolve in it]]> 2023-03-09 14:48:41 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510409241 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510410363 is also need to dissolve enzymes and nutrients in the alimentary canal, so that digestion can take place]]> 2023-03-09 14:49:21 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510410363 matildepetri https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510412389 2023-03-09 14:50:30 UTC https://padlet.com/matildepetri/vlv554q50rc354qc/wish/2510412389