Write down the steps that take place when an action potential arrives in a presynaptic axon terminal and the generation of another action potential in the post synaptic neuron.

b) According to the sliding filament model, binding sites on action open when ……………….. .

a) creatine phosphate levels rise

b) ATP levels rise

c) acetylcholine levels rise

d) calcium ion levels rise

a) In a relaxed muscle fibre, the myosin binding site on action is blocked by

i) titin

ii) troponin

iii) myoglobin

iv) tropomyosin

Critically analyse the Norms and Standards for a School as recommended by the Right of Children to Free and Compulsory Education Act, 2009.

Explain the process of administration of justice at the level of Panchayat with special reference to functioning of Grama Nyayalayas and the difficulties the rural people face in getting justice.

What is Civil Law? Differentiate between Civil Substantive Law and Civil Procedural Law. Give suitable examples.

Draw a simple flow chart and explain how kidney function is hormonally regulated

Describe with the help of a diagram the cyclic function of osmoregulation in Amoeba.

Explain with the help of a flow chart the cascade of events occurring in secondary haemostasis.

How do intercellular fluids differ from intracellular fluids?

State the differences between blood and plasma.

Write a formula representing the reaction between haemoglobin and oxygen.

Why does diffusion alone suffice to supply oxygen in both protists (protozoans) and flatworms?

What are the end-products of food that can be absorbed by the body? Explain how absorption of fats differs from absorption of proteins and sugars.

b) Why are villi present in the small intestine and not in the stomach?

a) Which nutrient of among following is absorbed mainly in the large intestine?

i) glucose

(ii) amino acid

(iii) sodium

(iv) water

Environmental problems associated with urban growth

Economic and social consequences of migration

Child Sex Ratio in India

Language and dialects