Elizabeth is conducting an investigation to study how molecules are transported into and out of a cell. Elizabeth builds a model
of a cell using a U-shaped tube. A barrier, which is permeable to water, but not sugar, is placed on the bottom of the tube to model the cell membrane. Elizabeth adds two different solutions to each side of the tube. The solute in each solution is sugar and the solvent is water. The initial levels of solution in Side A and Side B are equal. The concentration of sugar in Side A is lower than the concentration of sugar in Side B. What is Elizabeth likely to observe?
A. Water molecules will move from Side A to Side B. The solution level on Side A will fall and the solution level on Side B will rise.
B. Water molecules will move from Side B to Side A. The solution level on Side A will rise and the solution level on Side B will fall.
C. Sugar molecules will move from Side A to Side B. The solution level on Side A will fall and the solution level on Side B will rise.
D. Sugar molecules will move from Side B to Side A. The solution level on Side A will rise and the solution level on Side B will fall.
The correct answer is: A. Water molecules will move from Side A to Side B. The solution level on Side A will fall and the solution level on Side B will rise.
Because the barrier is permeable only for water, water will move via osmosis-down the gradient (into a area of higher solute concentration). Water tends to equalize the solute concentrations of the side A with the solute concentrations of the side B.
<span>A effect mutation can have on viruses is If a virus mutates then it may change its shape making ti able to bind to the cell and enter into the cell.</span>
The garden plants and snails stay balanced as they are still being eaten. However, if the cat is removed, the birds will overpopulate and then the snail would be eaten and decrease faster which gives garden plants an increase in population due to the decrease in snails. Hope this helps!
<span>It may be safe to say that we can rule out a concussion for this patient. The CT scan is negative for trauma to the skull, brain bleed and negative for tumors. However, there is a slight abnormality regarding the smaller size of the ventricles but otherwise unremarkable.</span>
