STD 12 - 7. human health and disease — NEET STD 11 Science — Question

Select the correct statements regarding mechanism of muscle contraction:
A. It is initiated by a signal sent by CNS via sensory neuron.
B. Neurotransmitter generates action potential in the sarcolemma.
C. Increased Ca⁺⁺ level leads to the binding of calcium with troponin on actin filaments.
D. Masking of active site for actin is activated.
E. Utilising the energy from ATP hydrolysis to form cross bridge.
Choose the most appropriate answer from the options given below :

Select the correct statement from the once given below

Resorption of water and electrolytes by distal tubules of kidney and thereby diuresis reducing the loss of water through urine (diuresis) is done by

De Vries discarded the principle of

The major constituent of connective tissue is

Branching descent and natural selection are the two key concepts of ........... theory of evolution.

It is character of disorder which described by Langdon Down.