Will a color change occur if iodine is mixed with cellulose or glycogen? why or why not?

Ageologist determines that a sample of a mineral cant be scratched by a steel nail but can be scratched by a masonry drill bit based on this information the sample mineral has to be softer than

When a person is exercising the body needs to deliver increased amounts of oxygen to the muscles which component of blood ensures that the muscles will receive it

2polnis which of the following is an advantage of an in vitro experiment?me