ugh diffusionThrough facilitated diffusionThrough osmosis       Which of the following statements accurately describes the relationship between hydrochloric acid and pepsin in the stomach?Hydrochloric acid deactivates pepsinPepsin neutralizes hydrochloric acidHydrochloric acid activates pepsinPepsin inhibits the production of hydrochloric acid       What is another term for the food-pipe that connects the mouth to the stomach?TracheaIntestineEsophagusDuodenum       Assertion (A): The length of the small intestine differs in various animals depending on the food they eat.Reason (R): Herbivores eating grass need a longer small intestine to allow the cellulose to be digested, while carnivores like tigers have a shorter small intestine as meat is easier to digest.Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.Assertion is true, but Reason is false.Assertion is false, but Reason is true.       Which organ is the site of the complete digestion of carbohydrates, proteins, and fats?StomachSmall intestineLarge intestineLiver       What is the function of bile juice from the liver in the small intestine?Neutralizing stomach acidEmulsifying fatsBreaking down carbohydratesActivating pancreatic enzymes       Which one of the following is wrong statement?The formation of dental plaque begins when bacteria acting on sugars produce acids that demineralize the enamel.Saliva can effectively neutralize the acid produced by bacteria in dental plaque.If left untreated, dental caries may lead to inflammation and infection of the pulp.Dental caries, or tooth decay, is caused by the gradual softening of enamel and dentine.       Which part of the body regulates the exit of waste material?Small intestineLarge intestineRectumAnal sphincter