You have a microorganism, and you have identified the components below. Which of these components tells you that you have a an a
rchaeon, rather than a bacterium? a. 705 ribosomes
b. Single circular chromosome
c. Plasmids
d. Presence of N-acetyltalosaminuronic acid in the cell wall
The correct answer is d. Presence of N-acetyltalosaminuronic acid in the cell wall.
Explanation:
Bacterial cell wall is made up of peptidoglycan which contains NAG and NAM units joined together by β(1-4) glycosidic linkage but the cell wall of archaea are different from the bacteria and called pseudo-peptidoglycan.
The cell wall of archaea is also called pseudomurein which is also composed of two units, N-acetylglucosamine and N-acetyltalosaminuronic acid and these two components are joined together by β (1-3) glycosidic linkage which is different from linkage in bacteria.
Therefore the correct answer is d. Presence of N-acetyltalosaminuronic acid in the cell wall.
Selective logging—the practice of removing one or two trees and leaving the rest intact—is often considered a sustainable alternative to clear-cutting, in which a large swath of forest is cut down, leaving little behind except wood debris and a denuded landscape
The RNA codon will be GAU, pairing Cytosine-Thymine-Adenine DNA codon with Guanine-Adenine-Uracil RNA codon. This codon is the Amino Acid, Aspartic Acid. In this codon we see Uracil which is the counterpart of Thymine in the RNA.
The cell must replicated DNA because when the cell divides, the daughter cells must have identical copies of DNA. DNA replication occurs in the S phase during interphase of the cell cycle.