for many years pellagra was believed to be an infectious disease promoted by unsanitary conditions. it was common in sanatoriums and orphanages but only among the patients and not the staff. a study of the diets showed that suffers of pellagra rarely ate high quality proteins, such as in eggs, milk, and meat.introduction of these proteins into the diet cured pellagra. which of the following experiments would support the belief that a lack of proteins causes pellagra?

Question

for many years pellagra was believed to be an infectious disease promoted by unsanitary conditions. it was common in sanatoriums and orphanages but only among the patients and not the staff. a study of the diets showed that suffers of pellagra rarely ate high quality proteins, such as in eggs, milk, and meat.introduction of these proteins into the diet cured pellagra. which of the following experiments would support the belief that a lack of proteins causes pellagra?

1) giving fruits that contains vitamin c to animals with pellagra
2)reducing the intake of high quality proteins in healthy animals and monitoring the results
3)inoculating healthy individuals with secretions from pellagra skin lesions
4)having healthy animals live in an unsanitary environment
5) moving animals with pellagra to a sanitary environment

Answer 1

To determine if a lack of proteins causes pellagra, you would need to conduct an experiment that explores the relationship between protein intake and the occurrence of pellagra. Among the given options, the experiment that would support the belief that a lack of proteins causes pellagra is:

2) Reducing the intake of high-quality proteins in healthy animals and monitoring the results.

This experiment involves reducing the intake of high-quality proteins in animals that do not have pellagra and observing the effects on their health. If pellagra-like symptoms develop in these animals after a period of low protein intake, it would suggest a link between protein deficiency and the occurrence of pellagra.