Scientific inquiry
variables
directions: read the description for each experiment and answer the questions.
1. prince burgers and fries
prince burgers and fries restaurant has created a new sauce that allegedly will
reduce the production of body gas associated with eating its gourmet burgers. the
manager at the restaurant, sheila e., recruits 100 customers with a history of gas
problems. she has 50 of them (group a) eat gourmet burgers with the new sauce.
the other 50 (group b) eat gourmet burgers with sauce that looks just like new
sauce but is really just a mixture of mayonnaise and food coloring. both groups were
told that they were getting the sauce that would reduce gas production. two hours
after eating the gourmet burgers, 30 customers in group a reported having fewer
gas problems and 8 customers in group b reported having fewer gas problems.
a. which people are in the control group?
d
what in the indonondont vorishlar
what is the control group

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

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.