Consumers are encouraged to buy Lightbulb A because it is more efficient than Lightbulb B. Which of the following would best demonstrate that Lightbulb A is more
efficient than Lightbulb B?
Lightbulb
A
Lightbulb
B
If it is shown that both
lightbulbs transform electrical
energy to light energy, but
Lightbulb A transforms less
electrical energy to heat
energy.
If it is shown that Lightbulb A
transforms solar energy to
light energy while Lightbulb B
transforms chemical energy to
light energy
If it was shown that both
lightbulbs transform electrical
energy to light energy, but
Lightbulb B does it much
slower than Lightbulb A.
If it was shown that LightbulbA
transforms electrical energy to
chemical energy while
Lightbulb B transforms
electrical energy to heat
energy

mountains can affect the climate of nearby lands. in some areas, mountains block rain, so that one side of a mountain range may be rainy and the other side may be a desert. much of airborne moisture falls as rain on the windward side of mountains.

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.