What type of chemical bond joins monosaccharides in polysaccharides?
Glycosidic bonds connect monosaccharides to form polysaccharides.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzyme Action and Factors Affecting Enzyme Activity
#polysaccharides
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Which of the following statements is correct about polysaccharides?
Glycogen has more branches than starch. Cellulose is unbranched, starch is a polymer of glucose, and chitin is found in fungi and arthropods.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Proteins and Polysaccharides - Structure and Functions
Which polysaccharide is stored in plant tissues as an energy reserve?
Starch is the primary storage polysaccharide in plants, serving as an energy reserve.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Proteins and Polysaccharides - Structure and Functions
Which of the following statements about polysaccharides is correct?
Starch (plants) and glycogen (animals) are storage polysaccharides. Chitin is structural, and humans cannot digest cellulose.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Proteins and Polysaccharides - Structure and Functions
Which of the following statements about polysaccharides is correct?
Glycogen has more branches than starch. Cellulose is structural, starch is a polymer of glucose, and chitin is found in fungi and arthropods.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Proteins and Polysaccharides - Structure and Functions
Which of the following is a structural polysaccharide found in arthropod exoskeletons?
Chitin is a polysaccharide that forms the exoskeleton of arthropods and fungal cell walls.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Proteins and Polysaccharides - Structure and Functions
Which of the following is an example of a storage polysaccharide?
Glycogen is a storage polysaccharide in animals, stored mainly in liver and muscle cells.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Proteins and Polysaccharides - Structure and Functions
Which of the following groups has cell walls composed of chitin and polysaccharides?
Fungal cell walls are composed of chitin and polysaccharides.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Bacteria - Structure and Economic Importance
The difference between amylose and cellulose is:
Amylose has α(1→4) linkages, cellulose has β(1→4) linkages accurately describes the key difference, similarity, or comparative feature asked about in this question. In Carbohydrates, the ability to compare and contrast related concepts is essential for deeper understanding. The distinguishing feature described by Amylose has α(1→4) linkages, cellulose has β(1→4) linkages reflects fundamental differences in structure, function, mechanism, or origin between the compared entities. The other options (Amylose is found in animal tissues, cellulose in plants, Cellulose is used for energy storage, amylose is for structural support, and Cellulose is a reducing sugar, amylose is non-reducing) either state incorrect comparisons, confuse the properties of the entities being compared, or describe features that are actually shared rather than different.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 7
Which glycosidic bond is not found in starch?
β(1→6) is the correct choice because it does not accurately describe or belong to the category addressed in this question. In the context of Carbohydrates, the other options (α(1→4), β(1→4), and Both (a) and (b)) are all valid and well-established concepts. β(1→6) is either unrelated to the topic, describes a different biological process, or represents a common misconception. Questions framed as 'which is NOT' require students to identify the exception among otherwise correct statements, demanding comprehensive knowledge of the topic rather than recognition of a single fact.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 7
Which glycosidic bond is found in cellulose?
β(1→4) 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. β(1→4) is specifically associated with the structure or compartment mentioned because of its unique biochemical properties and physiological role. The other options (α(1→4), α(1→6), and β(1→6)) are primarily associated with different cellular compartments, tissues, or structural contexts.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 7