Biology Food Tests And Important Extras Flashcards
what is starch tested by and what is the original colour?
iodine solution, orangey brown
what is glucose tested by and what is the original colour?
Benedict’s reagent/ solution, blue
what is protein tested by and what colour is it originally?
biuret solution/reagent, it is originally light blue
what is lipid tested by and what is the original colour?
ethanol solution, and original colour is colourless
what colour would a substance turn if it has starch in it?
blue black
what colour would a substance turn if it has glucose in it?
tomato/brick red
what colour would a substance turn if it has lipid in it?
milky white
what colour would a substance turn if it has protein in it?
pale purple
where does the vena cava bring blood from and to?
the body to the right atrium
where does the pulmonary artery bring blood from and to?
right ventricle to the lungs
where does the aorta bring blood from and to?
left ventricle to the rest of the body
where does the pulmonary bring blood from and to?
from the lungs to the left atrium
why does magnesium deficiency cause discolouration of leaves?
because it means less or no chlorophyll is made so the leaves turn yellow
how does magnesium deficiency cause stunted growth
as there is less chlorophyll, less photosynthesis takes place so less glucose is made - meaning less aerobic respiration for growth. also less amino acids and therefore proteins for growth
what does nitrate deficiency cause and WHY?
stunted growth, because nitrate ions are used to make amino acids (which are then made into proteins for growth) which is then used in photosynthesis so help plants grow
