Answer:
Option). the ability to remember the antigen it encounters
Explanation:
The adaptive or acquired immunity is a type of immunity, which develops by the exposure of pathogens during lifetime. Four features of adaptive immunity includes specificity, diversity, memory, and ability to differentiate between self and non-self.
Cells of adaptive immunity (B cells and T cells) are specific for pathogens. Once the antigens or their components are recognized by pathogens, these cells produce effector cells and memory cells.
These are the memory cells that remember the antigens and provide a rapid and more efficient response during subsequent encounters of those antigens.
Thus, the correct answer is first option.
<u>Answer:</u>
<em>Carbohydrates are stored in the liver and skeletal muscles in the form of </em><em><u>Glycogen.</u></em>
<u>Explanation:</u>
The carbohydrates are stored in the form of fats when the muscles and liver are full. When we consume carbohydrate giving foods, the food is broken down into molecular form of sugar and the sugar is turned into glucose by liver.
The glucose is converted into glycogen for long term storage in our body. The glucose is converted into fats and stored in body when the liver and skeletal muscles are full.
C.decreases friction.............
The correct answer for this question would be option B. Systematists categorize all living creatures into three domains namely bacteria, archaea and eukarya. This is a<span>ccording to the Woese system which is introduced in 1990. Both Archaea and Bacteria are classified as prokaryotes or single-celled organisms. Hope this answer helps.</span>
