Answer:
Proteins is a macromolecule that helps to send signals
Neurotransmitters are the chemical molecules, which help in transfer of the signals from one neuron to another. Inside the neurons, the signals are transferred as electrical signals, but at junction of two neuron, which is known as synapse, the signals are transferred in chemical forms.
These neurotransmitters have a definite shape and are recognized by the receptors present in the receptor site of the succeeding neuron. The neurotransmitters from the synapse binds to the receptor site of the receiving neuron. binding of the neurotransmitter to the receptor causes excitation of the receiving neuron, which also known as postsynaptic neuron.
Hence, Like a key in a lock, the shape of the neurotransmitter must bind with the receptors of the receiving neuron.
C. hemoglobin hope this helps
Answer:
they dont move that quick
ages ago if u type on google the map of the country it will be different to how it is now.
If organisms that lived there before had exceeded the carrying capacity then the ecosystem would no longer be able to sustain life
