Skip to content

#polysaccharide

9 public questions tagged with this topic.

Which polysaccharide is found in bacterial ll walls?

Peptidoglycan is a structural component of bacterial ll walls. This follows from NCERT principle where relation explains outcome clearly for students.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function, Topic: Structural organization and physiology.

Which polysaccharide is stored in plant tissues as an energy reserve?

Starch is the primary storage polysaccharide in plants, serving as an energy reserve. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Structural Organisation in Animals and Frog, Topic: Tissues, skeletal and organ systems.

Which polysaccharide is found in the archaeal cell wall instead of peptidoglycan?

Bacterial cell walls are built on peptidoglycan, a heteropolymer of N-acetylglucosamine and N-acetylmuramic acid crosslinked by peptide bridges sensitive to lysozyme and penicillin. Archaea do not synthesize peptidoglycan; instead, methanogenic euryarchaeota that possess a rigid wall produce pseudomurein, also called pseudopeptidoglycan, which superficially resembles peptidoglycan but differs chemically enough to confer resistance to classical wall antibiotics. Pseudomurein consists of N-acetylglucosamine linked to N-acetyltalosaminuronic acid rather than N-acetylmuramic acid, bearing L-amino

Ref: Albers & Meyer, Nature Rev Microbiol 2011, Pseudomurein; Kandler & Konig, Archaea 1998, Cell Walls.

The reducing end of a polysaccharide refers to:

The end containing a free anomeric carbon accurately defines or describes the concept asked in this question. Within Carbohydrates, precise definitions and terminology are essential for clear scientific communication. The other options (The terminal glucose unit in a polymer, The site where hydrolysis occurs, and The part of the molecule resistant to digestion) either describe related but distinct concepts, use incorrect terminology, or confuse similar-sounding terms that have different scientific meanings. A thorough understanding of exact definitions helps distinguish between closely related

Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 7

The main reason for the insolubility of cellulose in water is:

Strong hydrogen bonding between chains is the scientifically accurate answer to this question. Within the study of Carbohydrates, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of Strong hydrogen bonding between chains directly address what is being asked. Among the other options, Its linear structure, Its α(1→4) glycosidic linkage, and Presence of hydrophobic groups do not correctly answer this question because they either refer to different concepts, describe propertie

Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 7

Which polysaccharide is the main component of bacterial cell walls?

Peptidoglycan is the correct answer as it accurately identifies the biological location, composition, or distribution described in this question. In Carbohydrates, the spatial organization and localization of molecules are critical to their function. Peptidoglycan is specifically associated with the structure or compartment mentioned because of its unique biochemical properties and physiological role. The other options (Chitin, Glycogen, and Dextran) are primarily associated with different cellular compartments, tissues, or structural contexts.

Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 7