The littoral zone is also known as the intertidal zone is the place where the land and sea meet and is found between the low and high tide zones. This diverse marine ecosystem is witnessed along the coastlines globally. It comprises ample nutrients and oxygen and is considered home to numerous species.
The littoral zone is further differentiated into vertical zones, like the spray zone and low tide zone. Spray zone also known as the upper littoral, and is dry in the majority of the time, but sprayed with water at the time of high tides. It gets flooded at the time of extreme high tides and storms.
The low tide zone also is known as the lower littoral zone, is generally found under water and gets exposed when the tide becomes abnormally low. The species in this zone are not well used to extreme temperatures and long duration of dryness.
Some of the common organisms found in both spray and low tide zones are isopods and limpets.
Answer:
The conformational change in the G protein coupled receptor.
Explanation:
GPCR or the G protein-coupled receptor is one of the largest group of receptors in the eukaryotes.
The GPCR are seven-transmembrane receptors which are attached to the G proteins. The binding of the stimulus signalling molecules to the GPCR causes a conformation change in the GPCR. This conformational change in the GPCR disrupts the interaction between the G proteins and GPCR.
The change in the conformation of the receptor causes the dissociation of the G proteins and which can interact with other molecules of the membrane.
Thus, the conformation changes in the GPCR are the correct answer.
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The horse and donkey, though closely related by sharing a common ancestor, are different species. They have different number of chromosomes hence pairing of homologous chromosomes during fusion of gametes becomes complicated. The mule will have an extra chromosome from the horse hence will have abnormalities such as sterility. A Mule is unable to reproduce due to this same phenomenon. Homologous chromosomes are not well paired for meiosis I.
As the salinity of water increase the density of water decreases.
Answer is false
