J. Promoter
Explanation: A transcription factor and its associated transcription mediator complex must be attached to a DNA binding site called a promoter region before RNAP can initiate the DNA unwinding at that position.
Characteristics of Maltase from Baker's Yeast:
Molecular weight: 68,500 daltons. pH Optimum: 7.0 - 7.5 using maltose as the substrate. Inhibitors: Thiol blocking compounds, heavy metal ions, histidine, and certain amines. Tris should not be used as a buffer due to its inhibitory effect.
<span>Answer: occurs when the aortic and pulmonary valves backfill with blood</span>
The second heart sound,that is heard in normal hearts, is generated by the closing of the semilunar valves((the aortic valve and pulmonary valve). Before that, the first sound corresponds to the closing of the atrioventricular valves.
is a Disaccharide molecule it is to monosccarides connected by a phosphodister bond. one example would be Maltose
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