Answer:
b. smoking can paralyze the ciliary escalator.
Explanation
Generally cilia in the respiratory tract of smoker will undergo paralysis for 1-3 hours after smoking, and generally paralyzed in chronic smokers.
This is because the toxins( the TAR) in the cigarette destroy the mucocilliary escalator that trapped inhaled pathogens in air as it passes through the bronchi and push them up with phlegm out of the respiratory tract.
Therefore ,with the loss of cilirary function, pathogens are retained in the lungs leading to respiratory tract infections
None of the above because they are non pollutant
If total food calories exceed daily energy expenditure, excess calories accumulate as <u>fat in adipose tissue</u>
Explanation:
Calories is the measurement of energy released when the food is digested.
Proteins, carbohydrates and fats get digested to release energy.
Proteins and carbohydrates yield approximately equal amount of energy on getting digested. While fats yield maximum amount of energy.
If the amount calories produced by digestion of food exceeds the total amount of calories used up then the excess calories are stored as fats in the adipose tissue of the body.
This is the major reason why overeating and decreased physical activities results in obesity.
I believe the answer is B
It would be the Guard cell.
