Answer:
What can be noticed about the ligands and their receptor is that the configuration of both coincide, as a key would with its lock, which demonstrates the specificity of a receptor by its ligand.
Explanation:
A <u>ligand</u> corresponds to a molecule considered a signal or a messenger, while the <u>receptor</u> is a protein on the cell surface, with the capacity to accept a ligand.
Ligands and receptors constitute pairs that complement each other, so that <u>each receptor can bind to a specific ligand</u>, similar to what happens with a key and a lock.
Once the ligand-receptor complex is formed, changes occur inside the cell, which define a certain effect.
Answer:
B. Whale!
Explanation:
Snail, crawfish, and lily's all live in freshwater.
While D makes no sense water doesn't live anywhere.
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The leading contimination in the US is sugar becasue it affects ur body and makes u lazy.
Most flowers are bright in color because it is attractive to pollinators.
<h3>What is adaptation?</h3>
An adaptation is any phenotypic trait that confers an evolutionary advantage to an individual.
Most flowers are bright in color because it is attractive to pollinators, which is required to transport pollen to other flowers and thus increase the genetic variation in the plant population.
In conclusion, flowers are bright in color to attract pollinators.
Learn more about adaptation here:
brainly.com/question/1213023
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