Sugar skulls are decorative and edible items created in celebration of the Mexican holiday known as Day of the Dead (Día de los Muertos); the skulls represent deceased loved ones. Occasionally, a skull will bear the loved one's name on its forehead as part of an intricate sugar design.
In central and southern regions of Mexico, the Day of the Dead is celebrated from November 1 to November 2. The holiday coincides with the Mexican-Catholic celebrations of All Saints' Day and All Souls' Day. Sugar skulls are a major element of the celebration, serving as both representations of the deceased as well as decorative elements on altars honoring lost loved ones.Learn More
Allosteric control occurs when a small regulatory molecule causes the inhibition or activation of an enzyme at an allosteric site rather than the active site (the region of the enzyme that binds to substrates, where catalytic activity occurs). Another name for allosteric control is allosteric stimulation.Full Answer >
A quaternary structure is a protein that has two or more coils of peptide chains. Different types of bonds bind the chains into a specific shape, forming one of the two types of quaternary proteins: fibrous and globular.Full Answer >
There is no specific formula for lemon juice, as this liquid is a mixture and not a singular compound. Lemon juice is made of water, citric acid, vitamins and minerals, each specific compound having its own chemical formula.Full Answer >
Thermal decomposition is a chemical reaction where heat causes one substance to break into two or more different substances. The heat is used to break down the bonds holding the atoms of the original molecules together, so the reaction usually consumes more heat energy than it releases.Full Answer >