Describe the structure and parts of DNA molecule

Which organelle releases chemicals that break down large food particles into smaller ones?

The influenza virus cause the flu, but not other diseases. why?

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline.which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used