Answer:
A. The level of sucrose solution will rise in the glass tube because water molecules will pass through the semipermeable membrane into the tube as water potential is higher outside than inside the tube.
B. The apparatus can be modified to measure the rate of osmosis at different temperatures by doing the following :
1. Using a waterbath in order to heat the water and a thermometer to measure different temperatures.
2. Using a scale such as a ruler attached to the glass tube to measure the increase in height at different temperatures.
3. Using a stopwatch to record time taken for unit increase in the height of waterat different temperatures.
Explanation:
A. Osmosis is the movement of water molecules from a region of low solute concentration or high water potential to a region of high solute concentration or low water potential through a semipermeable membrane until equilibrium concentration is attained.
The movement of water molecules is based on a concentration gradient, from a region where there are more water molecules to a region where there are fewer water molecules.
The sucrose solution has a higher solute concentation but lower water potential due to fewer water molecules compared to water in the beaker, therefore, water molecules will pass through the semipermeable membrane into the glass tube resulting in an increase in the level of sucrose solution in the glass tube.
B. The apparatus can be modified to measure the rate of osmosis at different temperatures by doing the following :
1. Using a waterbath in order to heat the water and a thermometer to measure different temperatures.
2. Using a scale such as a ruler attached to the glass tube to measure the increase in height at different temperatures.
3. Using a stopwatch to record time taken for unit increase in the height of waterat different temperatures.
It arranges as 2 layers of phospholipids where the hydrophilic(water-loving) heads face toward the outside and the hydrophobic(water-hating) tails are on the inside. They arrange like this to allow for selective permeability which is why this is what a cell's plasma membrane is made up of.
Answer:
Well we need to start with one concept. When the wheel makes one full rotation, the unicycle will travel a distance equivalent to the wheel’s circumference. When we figure out the circumference, we will know how far it will travel in one rotation. We will then need to multiply that value by 4 to see how far it will travel in 4 rotations.
The wheels circumference is equivalent to 2*pi*radius. Or C=pi*diameter.
Pi=3.14
Diameter=12inches
C=(3.14)*(12inches) =37.68 inches
That's one revolution. Now let's multiply by 4 to get the distance traveled in 4 revolutions.
(37.68 inches) * (4 revolutions) = 150.72 inches traveled in 4 revolutions.
150.72 is already rounded to the nearest hundredth.
Hello,
The answer world be C. Light Waves travel faster than sound.
Enjoy :)
