Related Questions

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 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.
With reference to stem cells, which of the following statements is/are correct? 1. They do not have any tissue-specific structure. 2. They can carry oxygen in the blood but cannot pump blood through the body like heart cells. 3. Bone marrow and Peripheral blood tissue are the sources of stem cells. Select the correct answer using the codes given below:
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.
Match the structures given in Column I with the tissue given in Column II in which they are present. Select the correct answer using the codes given below : Column I Column II 1. Chondrocyte (a) Nervous tissue 2. Fat cells (b) Voluntary muscle fibre 3. Myofibril (c) Cartilage 4. Axon (d) Bone 5. Periosteum (e) Adipose tissue
__________ are connective tissue cells that form the supportive structure in which the functional cells of the tissue reside.
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 whilst animal cells do not. 2. Plant cells do not have a plasma membrane, unlike animal cells that do. Select the correct answer using the code given below: