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Formation of a large number of effector cells against a particular antigen is called ______

Correct Answer: Clonal selection
Formation of a large number of effector cells against a particular antigen is called Clonal selection. It involves the formation of a clone of cells by each activated T-lymphocyte and antibody-producing plasma cells by activated B-lymphocyte, each exhibiting the specificity for the same antigen.

Which of the following statement(s) is/are CORRECT for antigen activated effector T cells?
P. CD4+ cells make contact with macrophages and stimulate their microbicidal activity.
Q. CD4+ cells make contact with B cells and stimulate them to differentiate into plasma cells.
R. CD8+ cells make contact with B cells and stimulate them to differentiate into plasma cells.
S. CD8+ cells make contact with virus infected cells and kill them.

In a single link robotic arm the end-effector slides upward along the link with a velocity of 0.5 m/s while the link rotates about revolute joint with an angular speed of 1 rad/sec. When the end-effector is at a distance of 1 m from the joint, the acceleration experienced by the end-effector will be

What is the major difference between Central memory T cells (TCM Cells) and Effector memory T cells (TEM Cells)?

Which of the following statements about immune response are correct?
P. T cells are activated by antigen-presenting cells.
Q. Foreign peptides are not presented to helper T cells by class II MHC proteins.
R. Dendritic cells are referred to as professional antigenpresenting cells.

Which of the following statements are correct regarding common differences between plant and animal cells?
1. Plant cells have cellulose cell wall, while animal cells lack it.
2. Plant cells lack plasma membrane, while animal cells have it.
3. Mature plant cell have a large vacuole, while animal cells have numerous small vacuoles.

Cytotoxic T-lymphocyte-associated antigen 4 is expressed by activated effector T cells and it represses the proliferation of T cell.

Consider the Assertion (A) and Reason (R) and select the correct answer:
Assertion (A) If one premise is particular, the conclusion must be particular.
Reason (R) (i) An affirmative particular has no distributed terms, and a negative particular has an only one.
(ii) The premises cannot both be particular and thus must differ in quantity.

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of thefour alternatives. Violence takes a heavy toll and affects public life ______. High or low, known or unknown, rich or poor, popular or unpopular, no one is safe or secure today. It
appears that one can harm anybody at any time and at ______. A mad and sad rat race is on to make money and ______ power at any cost and by any means. The
result is that no political party or group can now ______ into claim to total innocence in so far as ______ of violence against innocent person for personal or political
gains is concerned. Violent demonstrations, rallies, hartals have become the order of the day. so far as ______ of violence against innocent person.

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of thefour alternatives. Our reputation and image is most definitely determined by our ______. Also our ______ tend to be habit forming, in that we have a ______ to act in a particular manner. Hence most people are ______ by their deeds and seem to have little control over their actions. We usually act according to or in response to oursurroundings-our circumstances and the environment which to a great extent ______ our priorities and objectives. is most definitely determined by our ______.

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of thefour alternatives. Our reputation and image is most definitely determined by our ______. Also our ______ tend to be habit forming, in that we have a ______ to act in a particularmanner. Hence most people are ______ by their deeds and seem to have little control over their actions. We usually act according to or in response to oursurroundings-our circumstances and the environment which to a great extent ______ our priorities and objectives. we have a ______ to act in a particular manner.