AP BIOLOGY

THE CELL

TRANSPORT INTO AND OUT OF THE CELL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A person with swollen gums rinses his mouth with warm salt water, and the swelling decreases. Which has occurred?
A
The swollen gums have absorbed the saltwater solution.
B
The saltwater solution lowers the temperature of the water in the gums.
C
The salt in the solution has moved against the concentration gradient.
D
The excess water has moved out of the gums.
Explanation: 

Detailed explanation-1: -Explanation: The reason is osmosis which is movement of water from higher solute concentration to lower solute concentration. The excess water inside gums moves out due to higher solute concentration of salt solution or osmotic pressure of salt solution in comparison to gums giving the person some relief.

Detailed explanation-2: -Reduces Inflammation – The warm salt water rinse is an effective way to reduce the inflammation and swelling associated with gum disease. Saltwater rinses can help with the treatment for gum disease, but it cannot fix the problems on its own.

Detailed explanation-3: -A saltwater rinse can soothe gum inflammation and promote healing according to a 2016 study . Directions: Mix 1 teaspoon of salt and 8 ounces of lukewarm warm water. Rinse your mouth with this saltwater solution for 30 seconds.

Detailed explanation-4: -Saltwater work by increasing the PH balance in your mouth. It creates a more alkaline oral environment in which the bacteria can no longer thrive. Instead, the harmful bacteria grow more in an acidic environment, so once it is neutralized, your mouth can become healthier and less inflamed.

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