Ascientist performed an experiment on mice. her results are posted below. lung cancer in mice experiment group duration of cigarette smoke exposure number of cases of lung cancer 1 0 days 0 2 500 days 3 3 1,000 days 27 4 1,500 days 32 after analyzing her results, she stated that a mouse must be exposed to more than 500 days of cigarette smoke before the mouse can get lung cancer. do you agree with the scientist's conclusions?

No; some mice may have developed lung cancer in less than 500 days of cigarette smoke exposure.

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.

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )