A. s.a. p!

Select the correct answer.
Which of the following correctly describes how carbohydrates are utilized in the body?
Carbohydrates from the food you eat are broken down to glucose then transported through the blood stream to cells in the
body where they provide energy.
Glucose from food you eat is built into carbohydrates, transported in the blood stream to the cells in the body where they
provide energy.
Carbohydrates from the food you eat are transported through the blood stream to the cells in the body where they provide
energy and create a by-product called glucose.
D.
Carbohydrates from the food you eat provide energy to cells and are then transported through the blood stream to be stored
as glucose.

answer: 4

explanation: 8

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.