porphyrin rings
Yes, a structural isomer means that it has a relatively similar structural make up.
Homologous
the color of plastids are similar to the chlorophyll in the chloroplast.
1) chlorophyll is made from a porphyrin ring structure, similar to heme in hemoglobin 2) chlorophyll is used for energy transfer processes (similar to the cytochrome systems of animals)
magnesium. we have iron in our hemoglobin, and plants have a similar shaped molecule with magnesium in the same location, called chlorophyll
Heat is needed. Component composition is important. component colour and product colour is not similar. The process is almost impossible to reverse. The change is chemical. The properties of the component and the product is not similar.
eye and hair color
Tissues
Similar bone structures in species
A chlorophyll supplement would include blue-green algae, spirulina, or chorella. These contain high concentrations of the green pigment found in plants, chlorophyll. This is a blood-building supplement as the chemical structure of chlorophyll is similar to hemoglobin.
Pheophytin and Chlorophyll are similar in there makeup. The difference between the two is that the magnesium ion is replaced by hydrogen making it less polar.
A chlorophyll supplement would include blue-green algae, spirulina, or chorella. These contain high concentrations of the green pigment found in plants, chlorophyll. This is a blood-building supplement as the chemical structure of chlorophyll is similar to hemoglobin.