Select the correct answer. Which one of the following statements holds true for the induced-fit model?
OA. Once the enzyme binds to the specific substrate molecule, no structural changes can occur in the active site of the enzyme.
B. Once the enzyme binds to the specific substrate molecule, structural changes can occur in the active site to accomodate the
product
OC. Once the enzyme binds to a specific substrate molecule, subtle structure changes occur in the active site, which are reverted
when the reaction is over.

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.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

you know they are heterozygous for a trait because they have it as jj or jj.