What is the role of chaperone proteins in cells?
Chaperone proteins assist in the proper folding of newly synthesized proteins.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Proteins and Polysaccharides - Structure and Functions
Proteins and Polysaccharides - Structure and Functions
Study the structure and functions of proteins and polysaccharides with targeted practice questions for biology exams.
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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 of the following is a conjugated protein?
Hemoglobin is a conjugated protein because it consists of a protein part and a non-protein heme group.
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 lipids is incorrect?
Peptide bonds are found in proteins, not lipids.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Proteins and Polysaccharides - Structure and Functions
Which of the following statements about carbohydrates is incorrect?
Sucrose is a disaccharide composed of glucose and fructose, not a polymer of glucose.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Proteins and Polysaccharides - Structure and Functions
Which of the following statements about lipids is incorrect?
Lipids do not contain peptide bonds; these are found in proteins.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Proteins and Polysaccharides - Structure and Functions
Which of the following statements about carbohydrates is correct?
Cellulose provides structural support in plants. Glycogen is found in animals, starch is made 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 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 carbohydrates is correct?
Monosaccharides are the basic building blocks of carbohydrates. Starch and glycogen are storage, not structural, polysaccharides.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Proteins and Polysaccharides - Structure and Functions
Which of the following is an example of a reducing sugar?
Glucose is a reducing sugar as it has a free aldehyde or ketone group that can donate electrons.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Proteins and Polysaccharides - Structure and Functions
Which of the following is an example of a heteropolymer?
Proteins are heteropolymers as they are composed of different amino acids.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Proteins and Polysaccharides - Structure and Functions