A runner wants to run 10.1 km. Her running pace is 8.3 mi/hr. How many minutes must she run?

What layer of the atmosphere is directly above the troposphere?

Increasing the substrate concentration in an enzymatic reaction could overcome which of the following? a) the need for a coenzymeb) allosteric inhibitionc) competitive inhibitiond) insufficient cofactors

Which is an example of a reversible physical change?