Which of the following biomolecules contains a phosphodiester bond?
Nucleic acids
Proteins
Carbohydrates
Lipids
Related Questions
Which of the following is NOT true about a phosphodiester bond?
It is the primary bond responsible for protein structure.
It links nucleotides in DNA and RNA.
It involves a phosphate group.
It creates the sugar-phosphate backbone of nucleic acids.
Iodine forms a blue color complex with starch but not with cellulose. This difference is primarily due to:
The presence of branching in cellulose.
The higher molecular weight of cellulose.
Difference in glycosidic linkages and resulting structural conformations.
The different monomer composition of cellulose and starch.
Which of the following statements are incorrect?
I. Left end of a polysaccharide is called non-reducing end while right end is called reducing end
II. Starch and glycogen are branched molecules
III. Starch and glycogen are the reserve food materials of plants and animals, respectively
IV. Starch can hold iodine molecules in its helical secondary structure but cellulose being non-helical, cannot hold iodine
I and II
II and III
I and IV
III and IV
The structural polysaccharide peptidoglycan, a key component of bacterial cell walls, possesses a unique feature that distinguishes it from other polysaccharides. This feature is:
The presence of Ξ±(1β6) glycosidic linkages.
The exclusive use of glucose as its monomeric unit.
The presence of short peptide chains cross-linking the polysaccharide chains.
Its ability to form triple helices.
Chitin, a structural polysaccharide found in the exoskeleton of arthropods, differs significantly from cellulose in terms of its monomeric unit. This difference primarily stems from:
The presence of an N-acetyl group at C-2 of the monomer
The type of glycosidic linkage between monomers
The degree of polymerization (chain length)
The three-dimensional arrangement of the polymer chains
Inulin, a storage polysaccharide found in some plants, differs from starch in several key aspects. Which of the following statements accurately describes a major difference between inulin and starch?
Inulin is a branched polymer, while starch is strictly linear.
Inulin is primarily found in animals, while starch is found in plants.
Inulin forms a helical structure, while starch forms a sheet-like structure.
Inulin is composed of fructose units linked by Ξ²(2β1) glycosidic bonds, while starch primarily consists of glucose units linked by Ξ±(1β4) and Ξ±(1β6) bonds.
Find out the wrongly matched pair.
Primary metabolite β Ribose
Secondary metabolic β Anthocyanin
Protein β Insulin
Cellulose β Heteropolymer
A molecule is found to contain multiple hydroxyl groups and a ketone functional group. To which class of biomolecules does it most likely belong?
Lipids
Proteins
Nucleic Acids
Carbohydrates
