B. Is some cancer cells are able to survive chemo, then those cells are able to divide/reproduce and pass the ability to survive chemo to the next generation of cells.
The correct answer is human activity.
The Yellowstone national park is one of the natural, which had a high number of wolf population. In late 1800s, the agricultural lands were spread nearby the Yellowstone ranges, the agricultural lands were present in the predation range of the wolf. As the agricultural land was in the predation zone of wolf, the wolves from the forests used to come in the agricultural land and destroy live stock. In order to protect live stock, the local people started killing wolves and even they started poisoning them, which was the major reason for the declination in the number of wolves in early 1900s.
The mRNA will attach to the small ribosomal unit and then the large ribosomal unit. Then the mRNA will be decoded with its codon's tRNA. ... The tRNA will come in at the A site and a peptide bond will form between amino acids at the A and P sites.
Hydrophobic and hydrophilic bond/interactions are common bond that forms long chains of proteins.
Some complex forms of proteins are made of subunits in which molecules bond together to form a larger unit. A good example is the blood protein hemoglobin. Hemoglobin consists of protein subunits known as the globin molecules. These subunits are folded chains of a large number of different amino acids which are known as polypeptides.