Students performed a laboratory experiment to determine the molar concentration of red potatoes. they cut cubes from a whole red potato and massed them. they placed the cubes into various sucrose solutions, whose molar concentrations are shown above. the students then removed the potato cubes from the solutions twenty-four hours later and massed them again. they calculated the percent change for the potatoes in the various solutions. all of the data is displayed above. what is the approximate molar concentration of the red potatoes used in this experiment?

The answer is C The red potatoes have approximately a 0.37 M solute concentration because this is where the potatoes would neither gain nor lose mass.

Explanation:

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.