Interferons are natural proteins produced by the cells of immune system in response to foreign agents such as viruses, tumor cells and parasites and protect non-infected cells from further infection. Interferons inhibit the viral replication within host cells, activate natural killer cells and macroRead more
Interferons are natural proteins produced by the cells of immune system in response to foreign agents such as viruses, tumor cells and parasites and protect non-infected cells from further infection.
Interferons inhibit the viral replication within host cells, activate natural killer cells and macrophages, increases antigen presentation to lymphocytes, and induce the resistance of host cells to viral infection. When the antigen is presented to matching T-cells and B-cells, these cells multiply and remove the foreign substance.
In which of the following groups of organisms, food material is broken down outside the body and absorbed?
[B] Yeast, mushroom, bread mould
[B] Yeast, mushroom, bread mould
See lessTo get the diminished image of the candle flame, the object must be placed at:
[A] infinity
[A] infinity
See lessAn element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept in open air. It reacts vigorously with water. Identify the element from the following
(b) Na
(b) Na
See lessA Student carries out the experiment of tracing the path of a ray of light through a rectangular glass slab for two different values of angle of incidence ∠i = 30° and ∠i = 45°. In the two cases the student is likely to observe the set of values of angle of refraction and angle of emergence as:
[C] ∠r = 20°, ∠e = 30° and ∠r = 28°, ∠e = 45°
[C] ∠r = 20°, ∠e = 30° and ∠r = 28°, ∠e = 45°
See lessName a microbe used for statin production. How do statins lower blood cholesterol level?
Monascus purpureus statins lower blood cholesterol level by competitively inhibiting the enzyme responsible for synthesis of cholesterol.
Monascus purpureus statins lower blood cholesterol level by competitively inhibiting the enzyme responsible for synthesis of cholesterol.
See lessWhat is meant by ‘hidden hunger’?
Consumption of food deficient in nutrients particularly, micronutrients, proteins and vitamins is called hidden hunger
Consumption of food deficient in nutrients particularly, micronutrients, proteins and vitamins is called hidden hunger
See lessWhat are interferons? How do interferons check infection of new cells?
Interferons are natural proteins produced by the cells of immune system in response to foreign agents such as viruses, tumor cells and parasites and protect non-infected cells from further infection. Interferons inhibit the viral replication within host cells, activate natural killer cells and macroRead more
Interferons are natural proteins produced by the cells of immune system in response to foreign agents such as viruses, tumor cells and parasites and protect non-infected cells from further infection.
See lessInterferons inhibit the viral replication within host cells, activate natural killer cells and macrophages, increases antigen presentation to lymphocytes, and induce the resistance of host cells to viral infection. When the antigen is presented to matching T-cells and B-cells, these cells multiply and remove the foreign substance.