Answer:
The correct answer is the primary response.
Explanation:
Immune response to an antigen can be categorized as a primary response or the secondary response, Primary response takes place as a result of first time exposure to the antigen. Naïve B-cell and T-cell are the cells of the primary response action. The lag phase is generally four to seven days however in some cases it can be weeks or months.
The primary response is slower in comparison or the secondary response. IgM is main and produced first in the primary response. Lymph nodes and spleen are sites for the primary response.
Thus, the correct answer is the primary response.
Answer:
Adolescents may show anger and annoyance quickly even over small matters .Reasons are:
- <u>Age of change </u><u>mentally</u>:
Adolescent age is a full of change.They think they are the best .they do not listen to elders. they think that they know everything.If someone say anything they will be angry.
2<u>.Age of change physically:</u>
During adolescents period they change physically too.the body parts were functioned properly.they have enough strength and power .To show the power they annoyance quickly even over small matters.
<u>3.Irritation</u>:
Sometimes elders say "now, you are not child you must need to take responsibility".and also say " you are not adult ,do whatever we say".this cause irritation on adolescent and show their rude behavior.
<u>4. Increase pressure on mind:</u>
In this adolescence period they think a lot a necessary and unnecessary one.While thinking there mind is out of their control and show a anger .And they feel along.
The correct answer is: A. testosterone