The most widely effective solvent for organisms is a material that is nonpolar. This is because most of the molecules present in organisms are nonpolar so it would only dissolve in nonpolar solvents like lipids, DNA, proteins, amino acids and fats. Nonpolar molecules would share their electrons equally resulting to having no partial charges in the molecule. The electronegativities are cancelled by each atom. Examples of this are most of the organic compounds like benzene and hexane, carbon tetrachloride is also a nonpolar molecule. To identify whether the molecule is nonpolar or polar, you need to look at the structure and the electronegativities of the atoms.
<span>C. neutral, with the number of protons equaling the number of electrons.
is the right answer
because number of neutrons vary from atom to atom</span>
Answer:
2. plant cell has more defined shape than the shape of an animal cell, because the plant cell has a cell wall that gives it a rigid shape
Explanation : x = 79 marks
The marks scored by Mike on four math test are 88,91,75 and 72.
Average of marks, A = 81
Let in fifth test he scores x marks.
The formula for finding average is :
In the fifth test he scores 79 marks.
Hence, this is the required solution.
