Lettuce primarily contains carbohydrates, particularly in the form of dietary fiber, which aids digestion. It also has small amounts of proteins, although they are not significant compared to other food sources. Additionally, lettuce contains lipids, but in very minimal quantities. Overall, it is low in macronutrients, making it a hydrating and low-calorie food choice.
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No, iron is a metallic element and do not exists as molecules, macro molecules are those which contain thousands of atoms or molecules as a single unity as starch, proteins etc.
dehydration synthesis
amino acid lipids
Nucleic acids.
moves things in and out of cells
A molecule containing a very large number of atoms.
Proteins are themselves macro molecules. They are not carbohydrates
Carbon, Hydrogen, Oxygen
Carbon
Nucleic acids.
No, a head of lettuce is not chemical potential energy. Chemical potential energy refers to the energy stored in the bonds of molecules, while lettuce is a physical object made up of various molecules.