Is a foreign substance, which stimulates the formation of antibodies.
Correct answer: B. Antigens
- A. Antibiotics
- B. Antigens
- C. Achaea
- D. Transposon
Explanation
Therefore, the correct answer is B) Antigens, as they are foreign substances that stimulate the immune system and lead to the formation of antibodies.
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The human digestive system covers the organs from mouth to anus, the movement of food, and the mechanical and chemical breakdown of carbohydrates, proteins and fats. It also includes the roles of digestive enzymes, bile, absorption through intestinal villi, and the assimilation of nutrients by body cells.
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