Which carbohydrates are found in our genetic material?

Afructose and galactose
Bsucrose and fructose
Cdeoxyribose and ribose


Question 5.5. The process of linking monosacchrides to become polysaccharides is called _________, while breaking down polysacchrides, like glycogen, occurs during a process called _________.

Ahydrolysis; dehydration synthesis
Bdehydration synthesis; hydrolysis
Chydrolysis; polysynthesis

Verified Answer :

Deoxyribose and ribose are found in our genetic material. 
The process of linking monosacchrides to become polysaccharides is called dehydration synthesis, while breaking down polysaccharides, like glycogen, occurs during a process called hydrolysis.

1. The right answer is C. deoxyribose and ribose.

Ribose is a pentose of the D series, all hydroxyls of which are oriented to the right (Fisher's representation). In ribonucleic acids (RNA), it is cyclized to ribofuranose: β-anomer specifically.

Deoxyribose, a component of deoxyribonucleic acids (DNA), is derived from ribose by a reduction of the secondary alcohol function of carbon # 2. Deoxyribose confers on this nucleic acid a greater stability peculiar to its function of conserving genetic information.


2. The right answer is B. dehydration synthesis; hydrolysis.

Dehydration synthesis takes place during the synthesis of molecules, a chemical dehydration reaction during which a molecule of water is released; it is also called condensation reaction or dehydration reaction.  A peptide bond, or a glycosidic moiety, may result from dehydration synthesis.

Hydrolysis is any chemical reaction in which there is a breakage of a molecule by water. We will have a decomposition of a body by fixing the H + and OH- ions coming from the dissociation of the water.  Hydrolysis reactions play an important role in biochemistry.