Over a tropical land region
Hope this helps :)
Answer:
D is the correct a answer।
Answer: All the statements of the question are correct.
Sickle cell disease is an autosomal recessive disorder that is characterized by formation of defective hemoglobin protein, which results in sickle shaped RBC ( red blood cell).
This disease is caused by mutation in the gene that is responsible for the protein hemoglobin ( which transport oxygen throughout body).
It is inherited by the offspring when both the mutated copy of genes ( one from each parent) are passed to him.
Carriers of the disease exhibit increased resistance to malarial parasites by controlling the level of free haem in the blood ( through enzyme heme oxygenase that produces a toxic carbon monoxide gas). The resistance thus developed, is a mutation.
Therefore, all the statements in the given question are correct.
Answer:
Post-synaptic neurons after receiving correct ligands called as neurotransmitter in correct amount generates action potential. This action potential may be inhibitory or accelatory.
Explanation:
Postsynaptic neuron
:
These are the neurons that is present after the gap called synapse. These neurons after receiving correct ligands called as neurotransmitter in correct amount generates action potential. This action potential may be inhibitory or accelatory.
There are number of neurotransmitter. These includes
GABA ergic: This neurotransmitter is often inhibitory.
glutamatergic: This neurotransmitter is often excitatory.
Adrenergic: This neurotransmitter releases norepinephrine.
Cholinergic: This neurotransmitter activates vertebrate neuromuscular junction.
