James and juan were at the highest point in the football stadium, dropping water balloons on people below. many of the balloons did not break, so the boys added more water to the balloons.
what impact did adding water have on the balloons' potential energy?
a)
it had no impact; it just made the balloons bigger.
b)
the gravitational potential energy increased because the mass increased.
c)
the gravitational potential energy decreased because the diameter increased.
d)
the gravitational potential energy remained constant because they did not increase the height.

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.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.