Major histocompatibility complex (MHC) refers to a large group of genes that code for proteins that play an essential role in which of the following?

Antigen presentation to T lymphocytes

Antigen presentation to B lymphocytes

passage carefully and answer the questions that follow Read the following passage carefully and answer of the conquest of Nature the taming of So often these days we hear and speak of the conquest river the war against insects and so on. Often these phrases ving them an attitude of hostility toward attaching any values to them but they have underlying them all Nature and Natures creatures a view-point which seems to as is to assume Nature as an enemy Lature is seen merely as a resource to be that needs to be vanquished. Alternativesly Nature is seen many exploited take the maximum out of it. regardless of what this does to natural processes and ses. It is this attitude which sees fellow to other creatures which depend on these processes. It is th humans too as a resource to be exploited or other human commu ther human communities as enemies to be vino lack of sensitivity and respect for our fellow creatures. Th conquered. There is a growing lack of sensitivity and respect for ou attitude is being drilled into child by social forces which can only be countered by environ mentai education. Yet sadly in most cases this is not done. What is done is talk about the food web and the energy cycles and ecological balance and how removal of any element disrupts tne whole system and how this can affect human beings too. What this approach Tacks is the essential interaction with Nature and with other humans. Indeed in many environmental ac tivities the opposite takes place. A classic example of this is making of a herbarium or even worse and insect collection as common in both formal and non-formal education in India. A child is often encouraged to pluck leaves and flowers and run after butterflies with a net and is part of a large group of children similarly marauding a patch of nature individual “speci mens” pressed in the plant file or trapped in a jar. It is even worse when the activity is also competitive i.e. who collects the maximum. A lot of knowledge may be gained but it is gained in a value system which emphasizes exploitation and conquest not sensitivity and respect. Learning under a tree (Shantivan) rather than in a classroom as is indeed the Indian tradition is far more effective and long lasting. The alternative is to take up activities where ecobalances ecological diversity animal behaviour human plurality and other such concepts and systems are introduced with the stress on their intrinsic worth. Materials processes living beings do not exist only for human use but more importantly they are worthwhile in themselves. A frog is as much in love with its life as the human child is with its; the feeling of the frog must be respected. The final thrust of environment education seems to be embodied in the vital question Am I doing something which disrespects or violates some other creatures right to live and live freely? If I am what can I do to minimize the damage I am causing? Once again the Indian tradition of ahimsa comes out as infinitely more relevant than much of what we learn in modern education.136.. According to the writer the frequently used phraseconquest of Nature by people indi rectly suggests_

man's hostile attitude towards Nature and Nature's creatures

Nature as mans enemy deserving to be vanquished.

Nature as a resource to be exploited take the maximum of it. I respect for the objects of Nature as living

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