An experiment that would support the belief that a lack of proteins causes pellagra could involve two groups of subjects:
1. Control group: This group would receive a diet containing adequate amounts of protein and other essential nutrients, including niacin and tryptophan (precursors to prevent pellagra).
2. Experimental group: This group would receive a diet that is deficient in proteins, specifically lacking in niacin and tryptophan.
Both groups would be observed over a period of time, during which their health status and any signs of pellagra would be monitored. If the experimental group showed a significantly higher incidence of pellagra compared to the control group, it would provide evidence to support the belief that a lack of proteins causes pellagra.
which of the following experiments would support the belief that a lack of protiens causes pellagra
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