Lymphatic vessels serve to absorb fat molecules from the small intestines.
Villi are located in the large intestine. They absorb excess water.
They can accept electrons and transfer mos of their energy to another Molecule.
vitamins
The structure of photosystem I in a cyanobacterium ("blue-green alga") has been completely worked out. It probably closely resembles that of plants as well. It is a homotrimer with each subunit in the trimer containing: * 12 different protein molecules bound to * 96 molecules of chlorophyll a ** 2 molecules of the reaction center chlorophyll P700 ** 4 accessory molecules closely associated with them ** 90 molecules that serve as antenna pigments * 22 carotenoid molecules * 4 lipid molecules * 3 clusters of Fe4S4 * 2 phylloquinones Photosystem II is also a complex of * > 20 different protein molecules bound to * 50 or more chlorophyll a molecules ** 2 molecules of the reaction center chlorophyll P680 ** 2 accessory molecules close to them ** 2 molecules of pheophytin (chlorophyll without the Mg++) ** the remaining molecules of chlorophyll a serve as antenna pigments. * some half dozen carotenoid molecules. These also serve as antenna pigments. * 2 molecules of plastoquinoneSource: http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/L/LightReactions.html
ATP not ADP binds to actin-myosin and is cleaved by to ADP.
Transverse foramina of cervical vertebrae serve as passageways for blood vessels leading to the brain.
Carbon dioxide and water are the two molecules that serve as starting materials for glucose synthesis.
Carbohydrates
The heart, like any other organ, needs oxygenated blood. Cardiac vessels serve this purpose.
enzymes
it is a state
to hold more blood when volume increases
enzymes
enzymes
Yes
energy
Reactants