What is the role of proteins in living things

Heredity has an impact on personal health, but environmental factors are important as well. select the best answer from the choices provided

Aresearcher created three groups based on participants bmi: normal weight, overweight and obese. the hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. which statistical test might the researcher use, assuming a reasonably normal distribution of values.

Some substances but not other can cross the (blank) membrane of a cell