Which of the following is an essential role played by large intestine bacteria? a. synthesize vitamin k and b-complex vitamins b. produce gas c. absorb bilirubin d. synthesize vitamins c and d

A. Synthesize Vitamin K and B-complex vitamins.

Explanation:

Intestinal bacteria are extremely important in the mainteinance of a healthy intestinal function and overall health as they carry an essential role in the synthesis of compounds such as vitamins K (K2) and B.

Vitamin K plays a crucial role in the production of blood clotting factors. According to research, this vitamin provides multiple health advantages such as the prevention of calcium accumulation, which is crucial in regard to heart health; while it also prevents osteoporosis.

Vitamin B-complex (eight different B vitamins), convert food into energy. Each type of vitamin has an essential role in human health. For instance, Vitamin B-3 maintains a healthy skin, digestion, and nerves; while Vitamin B-6 assists in the production of new red blood cells.

the correct answer: the index of refraction of the second medium is lower i tried this persons answer and it was wrong this person is lying

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.