The arytenoid cartilage anchors the vocal chords. It is a pair that looks like a pyramid needed for the voice sound production. It sits on the upper part of the cricoid cartilage posterior part. The arytenoid has body, muscular process, apex and the vocal area and the vocal is the only thing that is clear if doing endoscopy in the larynx.
They have created amino acids by replicating early earth conditions. This experiment was held by Stanley Miller and Harold Urey
Answer:
Prokaryotic cells are simple cells whereas Eukaryotic cells are large and complex cells.
Explanation:
- There is difference between the prokaryotic cells and eukaryotic cells in its structure and functions.
- Prokaryotic cells lack well defined nucleus but contain DNA molecules called as nucleoid. whereas, Eukaryotic cell contains a well defined nucleus.
- Prokaryotic cell is a single-cell and contains only one chromosome whereas eukaryotic cell is a multicellular which contains many chromosomes.
- Features like growth, response and reproduction is present in both type of cell.
Cutting down only mature trees allows more resources to be available for the younger growing trees and extends the life of the forest.
Explanation:
- Older an taller trees grow to a height and forms a canopy over the forest floor.
- This cuts the maximum amount of sunlight from reaching the under growths.
- Thus the shorter and younger trees lie in shade and cannot grow properly due to lack of sunlight.
- On the other hand the trees could penetrate deeper into the soil consuming up a lot of nutrient and the competition for resources becomes maximum.
- When taller and older trees are cut, the canopy is removed and sunlight couldl penetrate to the forest floor and the stress on soil is also reduced , thus allows the growth of younger trees which in turn extends the life of the forest.