The correct answer is A, the "promoter" site is the RNA polymerase binding site on a typical gene. This is how the process of gene expression begins. The RNA polymerase (a protein that builds RNA) binds to the promoter site of the DNA strand. It then begins the process of 'transcribing' the DNA code into an RNA strand, which can then be 'translated' into an amino acid chain to form a protein, which is the expression of the gene.
Looks like a kidney to me or really close up skin not sure tbh
He is incorrect because a catalyst is a substance that speeds up a chemical reaction so if there is no reaction to begin with a catalyst will not due anything.
Phosphorus is, therefore important in cell division and development of new tissue.
It is also associated with complex energy transformations in the plant. Adding phosphorus to soil low in available phosphorus promotes root growth and winter hardiness, stimulates tillering, and often hastens maturity.
Hopefully this helps :)
Answer:
A. The temperatures are too high.
Explanation:
A desert is a region with extremes of temperatures and little to no rainfall.
Organic matter are the remains of organisms that have died. They are a very important component of soils.
Where temperatures are very extreme, there would be little to no life. Only special organisms that have evolved to adapt will survive such region.
Due to the low amount of plant and animal lives owing from the high temperature of deserts, little to no organic matter forms.
