Initially, in terms of tonicity, the solution in side A with respect to that in side B is isotonic.
- A solution is considered to be isotonic if it possesses the same osmolarity, or level of solute concentration, as another solution. When these two solutions are placed on either side of a membrane that is only partially permeable to water, water will flow in an equal amount from one solution into the other. The result is that there is no water flow at all between the two solutions, despite the fact that water is travelling in both directions.
- A solution is considered hypotonic when it has a lower level of solute concentration in comparison to another solution.
- A solution is considered hypertonic when it has higher osmolarity compared to another solution.
In the given questions, the solution in the two arms of the U- tube has the same osmolarity and therefore is isotonic.
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6 or 7
A child's 20 baby teeth, which often come in by age 3, usually fall out in the same order they came in. That means the lower center teeth (lower center incisors) are usually the first to go, around age 6 or 7. The top center pair is next.
Atherosclerosis refers to the build-up of fats and cholesterol in the walls of blood vessels (Option A).
<h3>What is atherosclerosis?</h3>
Atherosclerosis is a disease characterized by the build-up of fats and cholesterol in the walls of blood vessels.
This build-up of fats narrows the blood vessels, thereby difficulting the movement of blood in the bloodstream.
The symptoms of atherosclerosis include, among others, chest pain, shortness of breath and fatigue.
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Cephalization refers to the concentration of nerve cells and sensory organs at the anterior (head) end of the body.
Cell wall and chloroplast
