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The red and blue dye shown are different molecular weights.  The [color] dye has a larger molecular weight.

A student set up an experiment to show the effect of light color on photosynthesis in Elodea plants. She filled three test tubes with distilled water and placed a piece of Elodea in each of the tubes. She added a drop of phenol red, which is red in a neutral solution and yellow in an acidic solution. She blew in each tube to add carbon dioxide, which caused the distilled water to become more acidic. She exposed: Tube A to green light Tube B to white light Tube C no light (wrapped in aluminum foil) Which of the tubes should she expect to turn red the fastest?

Does this test identify the father of this child?  Explain your answer for credit.  

This cell is undergoing meiotic cell division. What specific phase is this cell in?[phase][division]

What reagent was used to check for the presence of sulfate ions?

What happens to plant cells when they are placed in a hypertonic solution?  Describe the cells with an appropriate scientific term.

What would be an appropriate negative control for an experiment evaluating lactase activity?

What happens to lactase at 100°C or in a very basic pH?

What reagent was used to check for the presence of sulfate ions?

What are the products of lactic acid fermentation? (select all that apply)