Which statement about the Scientific Method is correct?

Peptic ulcers can be caused by:

You are carrying a heavy load when your hand hits a wall.  Which of the following arguments explains why your hand hurts?

Antibiotics:

Which two scientists defined inertia?

Nosocomial infections are those acquired while in the hospital.

Imagine holding a 10 pound weight with your arm extended parallel to the ground for 3 minutes.  Taking into account that the distance the weight moves is zero, what amount of work is done by your arm?  Why does your arm disagree with this conclusion? (hint: what are your muscles actually doing work on?)

__________ affect carbohydrate metabolism; whereas __________ regulate electrolyte and water balance.

Cephalosporins work primarily by:

What is of primary importance before selecting an anti-microbial?