Which two organisms are most closely related entamoeba histolytica, escherichia coli and entamoeba coli?

Answer;

Entamoeba histolytica and Entamoeba coli

Explanation;

-Entamoeba histolytica and Entamoeba coli because they have the same genus. Entamoeba histolytica is an anaerobic parasitic amoebozoan, part of the genus Entamoeba. Entamoeba histolytica is well recognized as a pathogenic amoeba, associated with intestinal and extraintestinal infections.

-Entamoeba coli is a non-pathogenic species of the genus Entamoeba that frequently exists as a commensal parasite in the human gastrointestinal tract. E. coli lives inside the lumen of the large intestine in man. They never enter into the mucosa or sub-mucosa layers or other tissues of the intestine.

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.