Answer:
Dr. Leland Hartwell utilized the baker’s yeast; Saccharomyces cerevisiae
Paul Nurse used a different type of yeast, Schizosaccharomyces pombe, as a model organism.
Explanation:
Dr. Leland Hartwell utilized the baker’s yeast; Saccharomyces cerevisiae, as a model system, to study the enzymes that are involved in the control of mitosis including deriving the checkpoints concepts etc. Paul Nurse used a different type of yeast, Schizosaccharomyces pombe, as a model organism.
Answer:
on the red blood cell membrane
The antibodies related to the ABO blood group are located in the blood plasma. They react with the corresponding antigens present on the surface of red blood cells. The type of antigens and antibodies vary depending on the ABO blood type of an individual.
The antibodies related to the ABO blood group are located in the plasma of our blood. These antibodies respond to the ABO blood group antigens that are present on the surface of red blood cells (erythrocytes). If an individual has type A blood, they will have A antigens on the surface of their red blood cells and anti-B antibodies in the plasma. Conversely, an individual with type B blood will have B antigens on their red blood cells and anti-A antibodies in their plasma.
Those with type AB blood carry both A and B antigens on their red blood cells but do not produce any antibodies against A or B in their plasma. Lastly, individuals with type O blood do not have any antigens on their red blood cells, but they produce both anti-A and anti-B antibodies in their plasma. This system is crucial to know for blood transfusion procedures as mixing incompatible blood types can result in a dangerous immune response.
#SPJ11
The fluctuations in abiotic cycles can influence the population in many ways. The population of a particular area depends on the various abiotic cycles such as nitrogen cycle, carbon cycle, phosphorous cycle. The changes in these cycles affects the life of population. Fluctuation results in hibernation of species. Some of the organisms migrate to another place in search of normal environment. The early breeding results in creating problems. It disturbs the ecological balance by using the limited supply of resources. The fluctuation in phosphorous cycle can affect the aquatic population. As the dependency of population on abiotic cycles is as important as the biotic factors the fluctuations can cause many problem.