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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.
Directions : In each of the following questions a statement is given, followed by two conclusions. Give answer :

Statements : In Japan, the incidence of stomach cancer is very high, while that of bowel cancer is very low. But Japanese immigrate to Hawaii, this is reversed - the rate of bowel cancer increases but the rate of stomach cancer is reduced in the next generation. All this is related to nutrition - the diets of Japanese in Hawaii are different than those in Japan.

Conclusions :
I. The same diet as in Hawaii should be propagated in Japan also.
II. Bowel cancer is less severe than stomach cancer.
In the question two statements are given, followed by two conclusions, I and II. Read all the conclusions and then decide which of the given conclusions logically follow/s from the given statements. Statements: All white blood cells are red blood cells. Some blood cells are red blood cells. Conclusions: I. All blood cells are red blood cells, is a possibility. II. Some red blood cells are not blood cells.
Which of the following statement is correct about antigen? Statement 1: The job of attacking target cells—either cells that have been infected by viruses or cells that have been distorted by cancer—is left to T cells or other immune cells. Statement 2: Antibodies ambush antigens circulating the bloodstream.
Which of the following statements are NOT true? a) The number of cells in an elephant is more than number of cells in a monkey b) The size of cells in an elephant is larger than size of cells in a monkey c) Shape of cells in an elephant is different than shape of cells in a monkey
Consider the following statements regarding the Structure of cells: 1. Both Animal & Plant cells comprise amyloplast within the cell membrane. 2. Plant cells have plasmodesmata channels whilst animal cells do not. 3. Vacuoles in both plant cells & animal cells are always filled with solid substances. Which of the statement given above is/are not correct? 
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.
The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph. P: It’s a type of cancer of the blood cells caused by a rise in the number of white blood cells in the body.  Q: There is hardly anything you can do to prevent leukaemia. R: If a person appears pale, swollen gums, an enlarged liver or spleen, significant bruising, bleeding, fever, fatigue, the doctor should suspect leukaemia. S: They crowd out the red blood cells and platelets the body needs to be healthy. All those extra white blood cells don’t work right, and that causes problems.
Consider the following statements regarding ‘Embryonic Stem (ES) cells: 1. These cells are derived from eggs fertilized in a woman's body. 2. The Embryonic cells are pluripotent. 3. The cells derived from ES cells can be used to replace/restore tissues that have been damaged by disease or an injury. Which of the following statement is/ are correct?
Which of the following statements are correct regarding the general difference between plant and animal cells? 1. Plant cells have cellulose cell walls while animal cells do not. 2. Plant cells do not have a plasma membrane, unlike animal cells which do. 3. Mature plant cell has one large vacuole whilst animal cell has many small vacuoles. Select the correct answer using the code given below: