Nutrition Digestion and Absorption
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Organic nutrients fall into 5 categories
- nubleic acids
- minerals like calcium, copper, and iron
- (serve as cofactors)
Four types of biological micromolecules
- proteins-amino acid
- lipids-fatty acid
- nucleic acids-nuceotides
- energy source
- componenet of some proteins
- source of carbon
- provide amino acids to make new proteins
- build muscle
- some for energy source
- major component of cell membranes
- enerty source
- thermal insulator
- building blocks of some hormones
Nubleic acids funtion
provide sugars, bases, and phosphates that can be used to make DNA, RNA, and ATP
Four groups of essential nutrients
- essential amino acids
- essential fatty acids
we can not make. They must come from food.
nonessential nutrients: we can make
Ways of obtaining food
sift water, filtering out the organic matter and expelling the rest.
barnacles, shark, whale shark, coral
those who eat food in large pieces
generally predators (in aquatic)
- salivary glands
rhythmic, spontaneous waves of muscle contraction that begin near the mouth and end at the stomach.
the transport of substances from the lumen to the blood
made by liver. secreted by gall bladder.
It is an e mulsifier (it's made up of amphipathic moledules that, in effect, allow fatty acids to be somewhat 'dissolved" in water)
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