Which tube shows the most catalase activity?

The light dependent reactions do not produce ____.

For animals, the final electron acceptor in cellular respiration is ____.

With regard to photosynthesis, photorespiration ____.

What is the product from glycolysis that is broken down into acetyl-CoA and carbon dioxide in the Krebs cycle?

What happens to the CO2 that is formed during aerobic respiration?

When an electron in a pigment molecule absorbs a photon (gets excited), the electron ____.

The products of glycolysis become the reactants in alcohol fermentation. What is/are the product(s) of alcohol fermentation?

This chart is a standard curve which plots color against known concentrations of nitrates in a water sample. Based on this chart, a sample which tests out orange has roughly how many ppm nitrates?  

I spill iodine on the counter and grab a rag to clean it up.  The rag turns black.  That tells me that the rag contains