TASK DEFINITION: Given a scientific question, generate a correct answer to it.
PROBLEM: Negative feedback controls insulin secretion by what organ?

SOLUTION: pancreas

PROBLEM: Oxygen reaches what veinless part of the eye by diffusing through its tear layer?

SOLUTION: cornea

PROBLEM: At any specific time, the rate at which a reaction is proceeding is known as its what?

SOLUTION:
instantaneous rate