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the human body has many cells that are deep inside the body. for this reason, the
human body requires

Nutrition

Explanation:

To make sure each cell gets energy

Food which can reach to every cell of the body.  

Explanation:

The human body is made of many cells and each works independently on its own. They require nutrition in order to live.

The food that we eat is broken down in the stomach and is absorbed and transported to each cell of the body.

The cells require energy in order to function properly. This is the reason why food is required by the body.  

answer; a male inherits only one allele of the x-linked gene controlling hair color;

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure