The most abundant tissue type by weight in the body .
a. epitheliab. nervec. connectived. muscle

c. connective

Explanation:

Connective tissue is the abundantly present tissue in the human or animal body. It is widely distributed and exists in varied type in the human or animal body. It includes the fat, bone, bone marrow, blood, cartilage, fibrous tissues. The function of the connective tissue is to provide the support and protection to the body. All connective tissues consists of fibers, cells and ground substances. The cells of the connective tissues include the macrophages, adipocytes, leucocytes, mast cells and fibroblasts.

The adipocytes are the cells which deposit fat in them. These cells are responsible for the majority of the weight in the body.

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

b.have there own function.