Enzymes catalyze reactions by lowering the activation energy of the reactions. List 2 mechanisms that active sites use to lower activation energy.

In construction, asbestos  was once used.  A known risk from working in sites that had asbestos is the formation of cysts that were caused by the breathing in of asbestos fibers. Cells will phagocytize asbestos, but are not able to break it down. As a result, asbestos fibers accumulate in _____.

Explain the differences in water’s molecular properties if it was linear (non-polar) H-O-H. Additionally, what are two ways in which life would be different on Earth if water were a linear molecule?

A 14C atom has two more protons than a 12C atom.

Use the figure below to answer the question: Which molecule(s) would form the structure of a protein?

Fill in the blanks after reading about the following experiment. To test the hypothesis that cells grow faster when given glucose, 12 flasks of cells were set up.  Samples of cells from each flask were measured.  Then 1 mL of 0 M glucose was added to 4 flasks, 1 mL of 0.1 M glucose was added to another 4 flasks and a 3rd set of 4 flasks was given 1 mL of 0.2 M glucose.  After 8 hours, the number of cells in each flask was determined. Independent variable: ________________________________ Dependent variable: _________________________________ Control group: ______________________________________

Online synergy can best be described as:

What is your professor’s name?  

Which of the media business models is at play when multiple companies offer essentially the same product or service?

These two networks were among the first networks to offer free TV content on the iPad in 2010.