aundisclosed-recipients: 未公开接收者:[translate] aWith the availability of petroleum, tea industries again shifted 以石油的可及性,再被转移的茶产业[translate] aThis kingdom includes bacteria, which are small single-celled organisms that do not contain a nucleus. 这个王国包括细菌,是小唯一celled有...
a By definition, bacteria do not have a true nucleus. Their DNA is not enclosed by a nuclear membrane but instead is aggregated in a central area of the cell called the nucleoid. 由定义,细菌没有一个真实的中坚力量。 他们的脱氧核糖核酸没有由一个核膜在称nucleoid的细胞的一个中心地区附寄,反而...
What kinds of cell structures are adaptations to the size difference between bacteria and eukaryotes? What are the two broad classifications of cells? Do bacteria cells have a nucleus? What is the role of centrioles in cell division?
Staining bacteria will tell you all the following except: a. cell shape b. cell size c. genetic makeup d. cell arrangement You are comparing two cells, one that is very small in size, and one that is very large in siz...
Bacteria lack many of the structures that eukaryotic cells contain. For example, they don't have a nucleus. They alsolack membrane-bound organelles, such as mitochondria or chloroplasts. ... Bacteria also have two additional unique features: a cell wall and flagella. ...
A bacteria cell is an exceedingly simple prokaryote, meaning it doesn't contain a nucleus. A bacteria contains only a cell wall, cell membrane, cytoplasm, ribosomes and the chromosome, although some bacteria cells also contain a plasmid or extra-cellular structures like a capsule, fimbriae and ...
Nucleus Answer Yes, all bacteria have plasmids. Plasmids are a small, circular,double-stranded DNAmolecule that naturally exist in all bacterial cells. Every bacterial cell has its own plasmid which is separated from chromosomal DNA. These plasmids have the ability to replicate independently and are...
What is the difference between archaea bacteria and Eukarya? Archaea:cells do not contain a nucleus; they have a different cell wall from bacteria. Eukarya: cells do contain a nucleus. Can archaea cause disease? No definitive virulence genes or factors have been described in archaea to date. ...
The genome is a single molecule of single-stranded DNA, approximately 4–6 kb in size; some viruses encapsidate exclusively negative-sense DNA, whereas others encapsidate both positive- and negative-sense DNA Replication occurs in the nucleus of dividing cells; infection leads to large intranucl...
Many bacteria haveactive social lives. Some make pili, hairlike growths of protein that link two cells to allow them to exchange DNA. Some form dense plaques together, known asbiofilms. And many emittiny bubbles known as vesiclesthat contain DNA, RNA or other chemicals, like messages in a ...