The answer is d. carry on metabolism.
Metabolism includes all chemical reactions involved in maintaining order within cells and organs. The purpose of metabolism is a conversion of food or fuel to building blocks for macromolecules and to energy for cellular processes. It is involved in the elimination of waste, too. Regulation of metabolism is important for normal functioning of cells and organs.
1. The law of conservation of mass applies to this reaction because when you look at its balanced chemical equation, the same amount or ratio of elements can be found:
C + O2 --> CO2
This shows that the product will have the same ratio of reactants.
2. The original piece of wood and resulting ashes do not weight the same because the combustible parts of the wood were burned and converted to gases. This means that the missing mass is equal to the gases produced. The remaining ashes are the incombustible parts of the wood.
Alleles are versions of a gene that will express different qualities. Multiple alleles would mean that a gene has many variations; for example, there a multiple alleles for eye color: blue, green, brown, etc. The opposite would be a gene with just two variations; an example would be simple pea plants which can have smooth or wrinkled pods.
Hope this helps!!
I believe the are recently new within the last 50 years i would imagine
