An example of a grad-school level question?
The digestive system breaks food into simple substances that the body can use. What system carries these simple substances from the digestive system to other parts of the body?

An example of a grad-school level question?
Burt used a spoon to stir soup that was cooking on his stove. Which spoon will stay the coolest while he stirs?

An example of a grad-school level question?
To which organ system do the esophagus, liver, pancreas, small intestine, and colon belong?

An example of a grad-school level question?

When the cells in an organism divide and reproduce, the organism can grow. Which cell organelle contains the genetic material for reproduction?