Which macromolecule is a primary component of cell walls, and which argument provides evidence for how the structure of this mol
ecule relates to its purpose within the cell wall?
1 answer:
Answer:
1. Macromolecule that is a primary component of cell walls is cellulose, a complex carbohydrate that contributes to support and protection to the plant cell.
Explanation:
Cellulose is a polymerized carbohydrate that is organized into microfibrils, constituting the primary component of the cell wall.
The main function of this macromolecule is to provide support, resistance and protection to the plant cell.
The argument that best provides evidence about the role of cellulose in the cell wall is its own structure. Cellulose forms a network of microfibrils, arranged in at least three layers, which are bound by another carbohydrate, hemicellulose. This structure makes it strong, resistant and elastic, allowing cell growth.
Other components of the cell wall are structural proteins, in addition to other polymers such as cutine, suberine and lignin.
2. The characteristic that evidences the origin of the mitochondria, according to the endosymbiotic theory, is the retention of their own genoma.
The endosymbiotic theory refers to the fact that eukaryotic cells originated from the association of prokaryotic cells, where mitochondria may have developed from one of these prokaryotic cells.
Other characteristics that support the theory of the origin of mitochondria are:
- The reproduction of mitochondria occurs by division of them within the host cell.
- In the membranes of mitochondria and bacteria there are the same enzymes.
- Similarity between prokaryotic and mitochondrial ribosomes.
Lear more:
Celulose brainly.com/question/456712
Endosymbiotic theory brainly.com/question/2957447
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