Nearly all of the energy used by living things on earth to survive originally came from the sun .Producers plant produce their own food from sun,water,air (Carson dioxide) and soil.
They can be maintained in a gene pool if they are expressed before
<span>reproductive age.</span>
For example:
Sickle cell anemia is caused by an abnormal hemoglobin in red blood cells. hemoglobin is the red pigment found in red blood cells for carrying oxygen.The abnormality arises from a genetic mutation in the DNA gene that codes for the beta chain of the protein called globin of which hemoglobin is made of.In the beta chain, the sixth amino acid called glutamine is replaced by another one called valine.This one change in the amino acids cause the hemoglobin protein to behave abnormally, causing red blood cells to lose their normal spherical shape and become bent like a sickle, hence the name "sickle cell" anemia
Sounds like ADD (<span>Attention-Deficit Disorder).</span>
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Answer</h2>
Unable to hydrolyze Beta 1-4 linkages
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Explanation</h2>
Cellulose is present in the plant structure. It is insoluble in water and aqueous solution. Humans do not have the necessary bacteria in their intestines that produces the enzyme cellulase required to break down the beta 1,4 linkage of cellulases. So we cannot break down the bond and are unable to digest these polysaccharides.
