Cellulose (Multiple Choice Answers)

1. What category does cellulose belong to?
- a) Proteins
- b) Polysaccharides
- c) Lipids
- d) Nucleic Acids

**Answer: b) Polysaccharides**

2. What is the basic unit of cellulose?
- a) Amino acids
- b) Fatty acids
- c) Glucose
- d) Nucleotides

**Answer: c) Glucose**

3. Where is cellulose primarily found?
- a) Animal cells
- b) Fungi
- c) Bacterial and plant cells
- d) Viruses

**Answer: c) Bacterial and plant cells**

4. What role does cellulose play in plants?
- a) Energy storage
- b) Structural support
- c) Enzyme production
- d) Photosynthesis

**Answer: b) Structural support**

5. How are glucose subunits in cellulose linked?
- a) Alpha 1-4 glycosidic bonds
- b) Beta 1-4 glycosidic bonds
- c) Peptide bonds
- d) Ester bonds

**Answer: b) Beta 1-4 glycosidic bonds**

6. What is the orientation of glucose molecules in cellulose?
- a) Alpha orientation
- b) Beta orientation
- c) Gamma orientation
- d) Delta orientation

**Answer: b) Beta orientation**

7. Why are every alternate glucose molecules inverted in cellulose?
- a) To increase solubility
- b) To form alpha bonds
- c) To make beta 1-4 glycosidic bonds
- d) To prevent synthesis

**Answer: c) To make beta 1-4 glycosidic bonds**

8. How are the polymeric chains of glucose arranged in cellulose?
- a) Coiling
- b) Helix formation
- c) Linear pattern
- d) Branched structure

**Answer: c) Linear pattern**

9. What type of bonds firmly hold the cellulose chains together?
- a) Ionic bonds
- b) Covalent bonds
- c) Hydrogen bonds
- d) Van der Waals forces

**Answer: c) Hydrogen bonds**

10. What structures do cellulose chains form in plant cells?
- a) Microtubules
- b) Microfilaments
- c) Microfibrils
- d) Microsomes

**Answer: c) Microfibrils**

11. In which organisms is cellulose synthesis limited to?
- a) Animals
- b) Plants and bacteria
- c) Fungi
- d) Viruses

**Answer: b) Plants and bacteria**

12. What are the complexes responsible for cellulose synthesis in plants?
- a) Endoplasmic reticulum
- b) Golgi apparatus
- c) Rosette terminal complexes
- d) Lysosomes

**Answer: c) Rosette terminal complexes**

13. What function do rosette terminal complexes perform?
- a) Energy production
- b) DNA replication
- c) Polymerization of glucose residues and assembly of cellulose microfibrils
- d) Protein synthesis

**Answer: c) Polymerization of glucose residues and assembly of cellulose microfibrils**

14. What serves as a primer in the synthesis of cellulose chains in plants?
- a) ATP
- b) ADP
- c) Sitosterol-beta-glucoside
- d) Glucagon

**Answer: c) Sitosterol-beta-glucoside**

15. Where does the cellulase enzyme cleave the cellulose chain in plants?
- a) In the cytoplasm
- b) In the nucleus
- c) In the cell wall
- d) In the vacuole

**Answer: c) In the cell wall**

16. What is the primary component of the polysaccharide matrix in the plant cell wall?
- a) Starch
- b) Cellulose
- c) Glucans and arabinoxylans
- d) Hemicellulose

**Answer: c) Glucans and arabinoxylans**

17. What strengthens the network formed by the polysaccharide matrix in the plant cell wall?
- a) Oxygen
- b) Calcium
- c) Nitrogen
- d) Phosphorus

**Answer: b) Calcium**

18. What is the most abundant biopolymer on Earth?
- a) DNA
- b) Protein
- c) Cellulose
- d) RNA

**Answer: c) Cellulose**

19. Where is cellulose found in animals?
- a) In the bloodstream
- b) In bones
- c) In the nervous system
- d) In the shells of tunicates

**Answer: d) In the shells of tunicates**

20. What is the process of cellulose degradation called?
- a) Glycolysis
- b) Glycogenesis
- c) Cellulolysis
- d) Lipolysis

**Answer: c) Cellulolysis**
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