In 1938, Albert Hoffman ad W. A. Stoll, both chemists, discovered when experimenting with a parasitic fungus that grows on rye.

When should a bar graph be used? a. when there is no independent variable. b. when the independent variable is continuous and does not show a relationship to the dependent variable. c. when the independent variable is continuous and shows a causal link to the dependent variable. d. when the independent variable is composed of categories and does not show a relationship.

What is the difference between bacterial infections and viral infections?

Explain why phospholipid molecules form a bilayer. (3 marks)