In numerous studies, treatment of prion preparations with ionizing and uv-radiation does not reduce transmission of disease, however, treatment with denaturants reduces disease transmission. what can be inferred from these observations? choose all the true statements.

Apatient is in need of hydration. which type of solution are the patient's cells most likely in?

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Which image shows labeled organelles that are present only in plant cells?