Multiple Choice
Cells at the top of a tree have a higher concentration of sugars than cells at the bottom.How might this fact assist a tree in moving water upward from its roots?
A) Cells with high concentrations of sugar are more dense.As these cells migrate downwards,cells containing fresh water are able to migrate upwards.
B) Water is pushed upwards by osmostic pressure.
C) It doesn't.In fact,water makes it to the top of a tree because that is where the water molecules are being evaporated.
D) Fresh water is drawn upwards to the sugar containing cells by way of dipole-dipole molecular interactions.
Correct Answer:
Verified
Correct Answer:
Verified
Q107: How can you tell whether a sugar
Q108: What is the easiest way to eliminate
Q109: What is an advantage of using chlorine
Q110: A combination of two or more substances
Q111: How would you classify the following material?
Q113: If you need 3.01 × 10<sup>23</sup> molecules
Q114: How would you classify the following material?
Q115: How necessary is soap for removing salt
Q116: Which of the following might have the
Q117: Why do red blood cells,which contain an