Smaller molecules diffuse easily as compared to the larger molecules. In other words, smaller is the size of molecule, easier and faster is its diffusion across a semipermeable membrane.
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C.) Phisical Change - all substances stay the same
Answer:
B. Nucleic acids store genetic information that codes for traits
Explanation:
There are four important biomolecules known which are also known as the molecules of life which are: carbohydrates, lipids, proteins and nucleic acid.
These all biomolecules play a very important role in the organism like the carbohydrates molecules provide energy to the cell, lipids provide a high amount of energy to the cell on oxidation, the proteins are the structural component of the skin, hair and nails.
In the given question, since only the function of the nucleic acid which is that it stores the genetic information which codes for the trait is correct therefore is the correct option.
Thus, Option-B is the correct answer.
Answer:
Both A and C is the right
People who had this mutation back in the 14th century had better chance of survival (better fitness) then people who did not have this mutation. They were majority of people who survived the Black Death because of natural selection. Their offspring inherited this mutation too, and their offspring after.
There was no natural selection for this mutation in some other parts of the world because they were not hit by the Black Death.
Since the same mutation is responsible for immunity to HIV and the Black Death, offspring of the people who have survived the Black Death are immune to HIV too. Part of the world that was hit by the Black Death, now have more people with this mutation.
