Read the following statements regarding muscle contraction
(i) One ATP utillised for making and breaking of the cross bridge.
(ii) The sarcomere lies between 2 Z-lines
(iii) Troponin blocks the active sites in resting stage
(iv) `Ca^(++)` ions help in unmasking active sites on HMM
Choose the correct option

Read the following statements regarding muscle contraction (i) One ATP utillised for making and breaking of the cross bridge. (ii) The sarcomere lies between 2 Z-lines (iii) Tropomysin blocks the active sites in resting stage (iv) Ca^(++) ions help in unmasking active sites on actin Choose the correct option

Consider the following statements regarding linkage. I. The linked genes ae located on the same chromosome. II. Crossing over between linked genes is rare III. Linked genes are always inherited together IV. Linked genes affects the percentage of homozygosity following hybridisation Choose the correct option.

Arrange the following events of muscle contraction in the sequence : (i) Generate an action potential in the sarcolemma (ii) Form a cross bridge (iii) Release a neurotransmitter (Acetylcholine) (iv) Release of calcium ions in sarcoplasm (v) Pulls the attached actin filaments towards the centre of "A" band (vi) Remove the masking of active sites for myosin The correct option is :-

Read the following statements and identify the correct option given. (i) The shape of the cells may vary with the function they perform. (ii) Human RBC is about 7.0mum in diameter. (iii) Cytoplasm is the main arena of cellular activities. (iv) Various chemical reactions occur in cytoplasm to keep the cell in the living state.

Read the following statements and select the correct option : I. In the skeletal muscles fibre, large number of myofilaments are arranged in the sarcoplasmic . II. The central part of an anisotropic band where the only thick , filament is present and thin filament is absent is called 'A' band. III. In the resting state , a tropomyosin protein masks the active b binding sites for myosin on the active filaments . IV. The junction between a motor neuron and the sarcolemma of the muscle fibres is called motor-end plate.

Read the following statements and select the correct option : I. In the skeletal muscles fibre, large number of myofilaments are arranged in the sarcoplasm. II. The central part of an anisotropic band where the only thick , filament is present and thin filament is absent is called 'A' band. III. In the resting state , a tropomyosin protein masks the active b binding sites for myosin on the active filaments . IV. The junction between a motor neuron and the sarcolemma of the muscle fibres is called motor-end plate.

How many of the following statements are correct regarding properties of enzyme ? (i) It lowers down the activation energy of the reaction . (ii) An active site of the enzyme is the pocket into which the substate fits . (iii) The catalytic structure of most of the enzyme is globular and primary . (iv) Carbonic anhydrase enzyme is considered as the fastest enzyme.