Ch. 8 Plant Chemistry and Metabolism. 1. List the 4 main types of macromolecules found in...
Ch. 8 Plant Chemistry and Metabolism.
1. List the 4 main types of macromolecules found in plants.
2. What is the most abundant compound in plants?
3. List 2 common phenolics and their purposes.
4. What are the structural components of lipids? In what ratio?
5. Describe the structure of membranes and their properties.
6. Explain why some amino acids are “essential” in animals, but not in plants.
7. Which have more saturated fats, temperate or tropical plants? What happens to them when exposed to temperatures of 32-50˚ F?
8. Explain the chemical difference between saturated and unsaturated fats, and how this affects membranes.
9. List the 4 levels of protein structure and describe each.
10. Name the main nucleotide involved in energy transfer.
11. What is the basic monomer of carbohydrates?
12. List 3 classes of secondary plant products.
13. What are the components of sucrose?
14. List 2 examples of terpenoids and their basic structural component.
15. List the 2 parts of respiration related to production of amino acids.
16. Explain the structural difference between starch and cellulose.
17. What are the 6 most common elements in living systems?
18. Briefly describe 3 main structural differences between DNA and RNA.
19. What is the basic purpose of secondary plant products?
20. List the 3 basic roles of carbohydrates.
21. What is the basic subunit of proteins?
22. Which is found in plants, cholesterol or sterols? What do they do?
23. List the 2 basic roles of lipids.
24. What are the areas of plant science related to this chapter?
25. List 4 well-known alkaloids.
26. What are the 2 main functions of proteins?
27. What are the components of nucleotides and nucleosides?
28. What are the bases found in DNA? In RNA?
Homework Answers
1. There are 4 main types of macromolecules present in plants.
1.carbohydrates
2.Lipids
3.Proteins
4.Nucleic acids
2.Cellulose is most abundant compound in the cell wall of plants. It provides rigidity and strength.
3. Phenolic acids, flavonoids, tannins.
Phenolic acids are absorbed through the Wall of intestinal tract and they are beneficial to our health. They work as antioxidants and prevent cellular damage due to the release of free radicals. They also promote anti-inflammatory conditions to our body.
Flavonoids protect the plants from biotic and abiotic stresses. They involved in plant development, pigmentation and UV protection
4. Plant lipids consists of triacylglycerols, phospholipids, galactolipids and sphingolipids.
One carbon, two hydrogen and one oxygen. In lipids components are the same but the ratio is less for oxygen, so it is 1:2 less than one for C:H:O.
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