Challenge Question

As you know, the planet Earth is warmed by radiant heat that comes from our local star, the Sun. This knowledge might or might not help you to answer the following question: When you climb a mountain on Earth you are moving (very slightly) closer to the Sun; does the air temperature get warmer or colder as you climb higher and higher?

Challenge Stumper:

Enzymes are present in all living biological systems. They are catalysts (that is: they speed up chemical processes without themselves being changed or destroyed). Each type of enzyme is very specific in its effect.
Which of the following enzymes present in the human digestive tract facilitates the digestion of fats:

a) pepsin, b) trypsin, c) lipase, or d) amylase? / ANSWER

Back to the list of Challenges ... Next Challenge

Send feedback to
Explorit Science Center
P.O. Box 1288, Davis, CA 95617, USA
Phone: (530)756-0191     Fax: (530)756-1227