The answer is carbon, hydrogen, and oxygen.
Carbohydrates is a type of organic molecule, since all organic molecules contains carbon, hydrogen, and oxygen, carbohydrates are no exception.
Even though different type of carbohydrates contains different ratio and arrangement of the three elements, but their comportment I still the same.
For example in glucose, a simple form of carbohydrate, is composed of 6 carbon, 12 hydrogen, and 6 oxygen atoms.
In laymen's terms it is easy for it to created bonds (covalent) with other elements; it is the backbone for most chemicals in the human body. It's also part of glucose sugar, one of the most common natural sugars that occurs especially in fruits.
There are 37.2 trillion cells in the human body
The Cross-Linkage Theory or also referred to as the glycosylation theory of aging was discovered or proposed by Johan Bjorksten in the 1940s. According to this theory, the aggregation of cross-linked proteins can damage cells and tissues this slowing down the bodily processes that eventually results to aging. In recent studies, cross-linking is associated with age-related changes in the studied proteins. Furthermore, this theory stresses out that the binding of glucose to proteins can cause various problems. Once the said binding occurs, the protein becomes impaired which leads to its performance inefficiency. Living a longer life would also mean increasing the possibility of oxygen-glucose meeting and protein. Some of the known cross-linking disorders include senile cataract and the appearance of tough, leathery, yellow skin.
Double layered nuclear, the outer nuclear membrane is continuous with the membrane of the rough endoplasmic reticulum (ER), it also continues with the inner nuclear membranes since the two layers are fused together at a numerous tiny holes called nuclear pores that perforate the nuclear enevelope