How do directional transport and efflux carriers work in auxin signaling?
What will be an ideal response?
Directional transport dominates auxin's movement over shorter distances. Once auxin enters a cell, it can exit only through active transport proteins called efflux carriers. Efflux carriers are not always distributed evenly around a cell's plasma membrane, and their placement can change over time. When efflux carriers in adjacent cells "point" in the same direction, they direct the flow of auxin through a tissue. In an actively lengthening shoot, for example, efflux carriers are positioned on the side of the cell closest to the base of the stem. Thus, auxin flows down through cells of the stem, where it encourages the cells to lengthen.
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A) I B) II C) III D) IV E) V
The human axial skeleton includes all of the following except the
1.skull. 2.ribs. 3.pectoral girdle. 4.sternum. 5.vertebral column.
The TATA box is located in?
What will be an ideal response?
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a. true b. false