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.
Which hypothalamic hormone stimulates the anterior pituitary gland resulting in the release of ACTH?
ACTH stimulates the adrenal cortex to release corticosteroid hormones.
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.
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 about the commonly used automobile battery are true?
1. It is usually a lead-acid battery.
2. It has six cells with a potential of 2V each.
3. Its cells work as galvanic cells while discharging power.
4. It cells work as electrolytic cells while recharging.
Select the correct answer:
Consider the following statements and choose the correct answer:
1. All living things are composed of cells and their products
2. All cells arise from pre-existing cells
3. All cells are basically alike in chemical composition and metabolic activities
4. The function of an organism as a whole is the outcome of the activities and interactions of the constituent cells
A furnace wall consists of two layers. The inside layer of 450 mm is made of light weight bricks of thermal conductivity IW/m.K and outside layer of 900 mm is made of refractory of thermal conductivity 2W/m.K. The hot face of the inside layer is at temperature 1300 K and the cold face of the outer layer is at 400 K. The temperature at the interface between the two layers is . . . . . . . . K.
Which cells contain the ACTH receptors that increases the synthesis of cAMP second messengers?
Stressors are able to activate the nerve cells of the . . . . . . . . so that more corticotropin-releasing factor is sent to the pituitary gland, thus increasing secretion of ACTH into the blood.