In large proteins, peptide chains are much looped, twisted and folded back on themselves. The folded structure is due to the formation of________bonds
Arrange the following in sequence during the transmission of nerve impulse at chemical synapse.
i. Neurotransmitter binds with receptors of post synaptic cell.
ii. Calcium channels open and the calcium diffuses inward from ECF.
iii. Impulse travels along the axon of presynaptic neuron.
iv. Release of neurotransmitter by exocytosis.
v. Synaptic vesicles fuse with cell membrane of axon terminal of presynaptic neuron.
The highest level of ecological hierarchy in ecological organization is
Primary productivity in an ecosystem refers to the rate of generation of _________ .
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