Eubacteria reproduce asexually through binary fusion. Binary fusion is a complete replication of the bacteria's genetic material that results in one parent cell dividing into two identical bacteria cells. It can occur rapidly at one split every 20 minutes, accounting for the amazing replicative ability of eubacteria.
At the start of binary fusion, the genetic material of a eubacteria cell is copied so that two sets of chromosomes are formed. These two copies of chromosomes move to separate nucleotide regions, and the plasma membrane begins to grow between the two copies. Once these copies double their original size, the plasma membrane pinches together, separating the original eubacteria cell into two daughter cells. These two daughter cells are independent of each other but can sometimes remain connected. This connection is what forms colonies in some species. Since the cells produced through binary fusion are genetically identical, they are easily destroyed with antibiotics. In order to counter this, eubacteria recombine through conjugation, transduction and transformation.
Bacteria are a type of eubacteria, and some possess the ability to go into a dormant stage called a "spore," in which they rest until threatening conditions pass. Spores are resistant to heat, severe dryness, radiation and toxic chemicals.Learn More
The cytoplasm was discovered in 1835 by three biologists, George E Palade, Albert Claude and Christian de Duve. It was Robert Hooke who discovered the cell in 1831 and laid down the fundamentals for the study of the cell.Full Answer >
The National Science Foundation explains that viruses infect host cells by piercing the cells' outer membranes, digesting the walls and injecting virus DNA into the cells. While many viruses remain dormant under extreme conditions, such as freezing temperatures, they may come to life in the right conditions and enter another organism's cells.Full Answer >
The major difference between active and passive transport is that passive transport does not require the application of external energy, while active transport does. Both processes move molecules across the cell membrane, but passive transport always takes advantage of existing concentration gradients to allow a natural diffusion of molecules.Full Answer >
A sperm cell delivers its DNA to and fertilizes eggs, according to the National Center for Biotechnology Information. The BBC points out that this genetic material is contained in 23 chromosomes, which combine with the 23 chromosomes found in the female sex cell to make 23 pairs of chromosomes that contain all the genes for the new embryo.Full Answer >