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6. How does chitin differ to cellulose?
- It has a nitrogen-containing appendage
- It has an additional carbonyl group
- It is made up of α glucose monomers
7. Can animals digest cellulose?
- No, it remains in the body
- Yes, and it is essential for a healthy diet because it stimulates the digestive tract to secrete mucus
- No, it is excreted, but essential for a healthy diet because it stimulates the digestive tract to secrete mucus
- No, it is excreted, but essential for a healthy diet because it regulates the chemical balance of cells
8. What reactions form polymers?
9. Which creatures can digest cellulose?
- Prokaryotes, protists, and some fungi
- Protists, bacteria, and fungi
10. Cellulose molecules in plant cells that have bonded through hydrogen bonding form...
- Microtubules
- Microfibrils
- Intermediate fibrils
11. Which two molecules are monosaccharides?
- Glucose and fructose
- Glucose and sucrose
- Glucose and maltose
12. Are cellulose molecules helical or straight?
13. What are aldoses (aldehyde sugars)?
- Molecules with the carbonyl group at the end of the carbon skeleton
- Molecules with the carbonyl group within the carbon skeleton
14. What creates branching in amylopectin?
- 1-6 linkages at branching points of the molecule
- 1-4 linkages at branching points of the molecule
15. Are starch molecules helical or straight?
16. How does being made up of β glucose monomers affect the structure of cellulose?
- Each β glucose monomer is upside down with respect to its neighbours
- Each β glucose monomer is in the same orientation as its neighbours
17. Chitin is used by which organisms in cell walls?
- Prokaryotes
- Fungi
- Arthropods
18. Are cellulose molecules ever branched?
19. What reactions break up polymers?
20. What do the hydroxyl groups on the glucose monomers of cellulose allow it to do?
- Hydrogen bond with adjacent cellulose molecules
- Covalent bond with adjacent cellulose molecules
