Starch molecules are too large to pass through the
tubing into the beaker. Which errors could have
caused starch to appear in the beaker despite this
fact? Check all possible errors.
not washing the outside of the tubing after
filling it with starch
reusing droppers for different solutions
adding glucose to the solution in the dialysis
tubing
using a beaker that had not been cleaned
thoroughly
DONE

4

If the beaker was not cleaned, starch could have been in it.

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.