Question: Order the steps that cause a shoot to bend toward a
light source.
Starting with light shines on o…



Order the steps that cause a shoot to bend toward a
light source.

Starting with light shines on one side of a shoot and
ending bends towards light source.

Photoreceptors in the shoot sense the location of the
light

Auxin activates proton pumps, decreasing the pH of cells
on the shaded side of the shoot.

Cells on the shaded side of the shoot
elongate.

Acidification breaks hydrogen bonds in the cell wall and
activates expansins.

The concentration of auxin increases on the shaded side
of the plant.

which of the following statement are major sources of viral
outbreaks (more than one)

virus strain mutates to avert the host/’s acquired immunity

virus transmits from typical host species to new species

host/’s own DNA mutates randomly to form a virus

random mixing of nucleic acids generates new viruses

movement of hosts introduces virus to new areas, affecting new
populations

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